diff --git a/index.css b/index.css
index 771e6422..ab9cea5d 100644
--- a/index.css
+++ b/index.css
@@ -1513,6 +1513,11 @@ div.states > .coaIcon > use {
   width: 5.5em;
 }
 
+#saveTilesScreen div.label {
+  display: inline-block;
+  width: 5em;
+}
+
 #regimentBody div {
   margin: 0.1em 0;
 }
diff --git a/index.html b/index.html
index 4d9f90cb..0d699afd 100644
--- a/index.html
+++ b/index.html
@@ -3389,6 +3389,7 @@
         <button onclick="saveSVG()" data-tip="Download the map as vector image (open in browser or Inkscape)">.svg</button>
         <button onclick="savePNG()" data-tip="Download visible part of the map as .png (lossless compressed)">.png</button>
         <button onclick="saveJPEG()" data-tip="Download visible part of the map as .jpeg (lossy compressed) image">.jpeg</button>
+        <button onclick="openSaveTiles()" data-tip="Split map into smaller png tiles and download as zip archive">tiles</button>
         <button onclick="saveGeoJSON()" data-tip="Download map data in GeoJSON format">.json</button>
         <button onclick="quickSave()" data-tip="Save the project to browser storage (unreliable). Shortcut: F6">storage</button>
       </div>
@@ -3396,7 +3397,7 @@
       <p style="font-style: italic">Generator uses pop-up window to download files. Please ensure your browser does not block popups.</p>
       <div data-tip="Define scale of a saved png/jpeg image (e.g. 5x). Saving big images is slow and may cause a browser crash!" style="margin-bottom: .3em">
         PNG / JPEG scale:
-        <input id="pngResolutionInput" data-stored="pngResolution" type="range" min=1 max=8 value=1 style="width: 10.8em" oninput="pngResolutionOutput.value = this.value">
+        <input id="pngResolutionInput" data-stored="pngResolution" type="range" min=1 max=8 value=1 style="width: 14em" oninput="pngResolutionOutput.value = this.value">
         <input id="pngResolutionOutput" data-stored="pngResolution" type="number" min=1 max=8 value=1 oninput="pngResolutionInput.value = this.value">
       </div>
     </div>
@@ -3410,6 +3411,30 @@
       </div>
     </div>
 
+    <div id="saveTilesScreen" style="display: none" class="dialog">
+      <p style="font-style: italic">Map will be split into tiles and downloaded as a single zip file. Avoid saving to big images</p>
+      <div data-tip="Number of columns" style="margin-bottom: .3em">
+        <div class="label">Columns:</div>
+        <input id="tileColsInput" data-stored="tileCols" type="range" min=2 max=20 value=8 style="width: 11em" oninput="tileColsOutput.value = this.value">
+        <input id="tileColsOutput" data-stored="tileCols" type="number" min=2 value=8 oninput="tileColsInput.value = this.value">
+      </div>
+      <div data-tip="Number of rows" style="margin-bottom: .3em">
+        <div class="label">Rows:</div>
+        <input id="tileRowsInput" data-stored="tileRows" type="range" min=2 max=20 value=8 style="width: 11em" oninput="tileRowsOutput.value = this.value">
+        <input id="tileRowsOutput" data-stored="tileRows" type="number" min=2 value=8 oninput="tileRowsInput.value = this.value">
+      </div>
+      <div data-tip="Image scale relative to image size (e.g. 5x)" style="margin-bottom: .3em">
+        <div class="label">Scale:</div>
+        <input id="tileScaleInput" data-stored="tileScale" type="range" min=1 max=4 value=1 style="width: 11em" oninput="tileScaleOutput.value = this.value">
+        <input id="tileScaleOutput" data-stored="tileScale" type="number" min=1 value=1 oninput="tileScaleInput.value = this.value;">
+      </div>
+      <div data-tip="Calculated size of image if combined" style="margin-bottom: .3em">
+        <div class="label">Total size:</div>
+        <div id="tileSize" style="display: inline-block">1000 x 1000 px</div>
+      </div>
+      <div id="tileStatus" style="background-color: #33333310; font-style: italic"></div>
+    </div>
+
     <div id="alert" style="display: none" class="dialog">
       <p id="alertMessage">Warning!</p>
     </div>
@@ -4164,5 +4189,6 @@
   <script defer src="libs/rgbquant.min.js"></script>
   <script defer src="libs/jquery.ui.touch-punch.min.js"></script>
   <script defer src="libs/pell.min.js"></script>
+  <script defer src="libs/jszip.min.js"></script>
 </body>
 </html>
diff --git a/libs/jszip.min.js b/libs/jszip.min.js
new file mode 100644
index 00000000..131b697d
--- /dev/null
+++ b/libs/jszip.min.js
@@ -0,0 +1,13 @@
+/*!
+
+JSZip v3.6.0 - A JavaScript class for generating and reading zip files
+<http://stuartk.com/jszip>
+
+(c) 2009-2016 Stuart Knightley <stuart [at] stuartk.com>
+Dual licenced under the MIT license or GPLv3. See https://raw.github.com/Stuk/jszip/master/LICENSE.markdown.
+
+JSZip uses the library pako released under the MIT license :
+https://github.com/nodeca/pako/blob/master/LICENSE
+*/
+
+!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).JSZip=e()}}(function(){return function s(a,o,u){function h(r,e){if(!o[r]){if(!a[r]){var t="function"==typeof require&&require;if(!e&&t)return t(r,!0);if(f)return f(r,!0);var n=new Error("Cannot find module '"+r+"'");throw n.code="MODULE_NOT_FOUND",n}var i=o[r]={exports:{}};a[r][0].call(i.exports,function(e){var t=a[r][1][e];return h(t||e)},i,i.exports,s,a,o,u)}return o[r].exports}for(var f="function"==typeof require&&require,e=0;e<u.length;e++)h(u[e]);return h}({1:[function(l,t,n){(function(r){!function(e){"object"==typeof n&&void 0!==t?t.exports=e():("undefined"!=typeof window?window:void 0!==r?r:"undefined"!=typeof self?self:this).JSZip=e()}(function(){return function s(a,o,u){function h(t,e){if(!o[t]){if(!a[t]){var r="function"==typeof l&&l;if(!e&&r)return r(t,!0);if(f)return f(t,!0);var n=new Error("Cannot find module '"+t+"'");throw n.code="MODULE_NOT_FOUND",n}var i=o[t]={exports:{}};a[t][0].call(i.exports,function(e){return h(a[t][1][e]||e)},i,i.exports,s,a,o,u)}return o[t].exports}for(var f="function"==typeof l&&l,e=0;e<u.length;e++)h(u[e]);return h}({1:[function(l,t,n){(function(r){!function(e){"object"==typeof n&&void 0!==t?t.exports=e():("undefined"!=typeof window?window:void 0!==r?r:"undefined"!=typeof self?self:this).JSZip=e()}(function(){return function s(a,o,u){function h(t,e){if(!o[t]){if(!a[t]){var r="function"==typeof l&&l;if(!e&&r)return r(t,!0);if(f)return f(t,!0);var n=new Error("Cannot find module '"+t+"'");throw n.code="MODULE_NOT_FOUND",n}var i=o[t]={exports:{}};a[t][0].call(i.exports,function(e){return h(a[t][1][e]||e)},i,i.exports,s,a,o,u)}return o[t].exports}for(var f="function"==typeof l&&l,e=0;e<u.length;e++)h(u[e]);return h}({1:[function(l,t,n){(function(r){!function(e){"object"==typeof n&&void 0!==t?t.exports=e():("undefined"!=typeof window?window:void 0!==r?r:"undefined"!=typeof self?self:this).JSZip=e()}(function(){return function s(a,o,u){function h(t,e){if(!o[t]){if(!a[t]){var r="function"==typeof l&&l;if(!e&&r)return r(t,!0);if(f)return f(t,!0);var n=new Error("Cannot find module '"+t+"'");throw n.code="MODULE_NOT_FOUND",n}var i=o[t]={exports:{}};a[t][0].call(i.exports,function(e){return h(a[t][1][e]||e)},i,i.exports,s,a,o,u)}return o[t].exports}for(var f="function"==typeof l&&l,e=0;e<u.length;e++)h(u[e]);return h}({1:[function(l,t,n){(function(r){!function(e){"object"==typeof n&&void 0!==t?t.exports=e():("undefined"!=typeof window?window:void 0!==r?r:"undefined"!=typeof self?self:this).JSZip=e()}(function(){return function s(a,o,u){function h(t,e){if(!o[t]){if(!a[t]){var r="function"==typeof l&&l;if(!e&&r)return r(t,!0);if(f)return f(t,!0);var n=new Error("Cannot find module '"+t+"'");throw n.code="MODULE_NOT_FOUND",n}var i=o[t]={exports:{}};a[t][0].call(i.exports,function(e){return h(a[t][1][e]||e)},i,i.exports,s,a,o,u)}return o[t].exports}for(var f="function"==typeof l&&l,e=0;e<u.length;e++)h(u[e]);return h}({1:[function(l,t,n){(function(r){!function(e){"object"==typeof n&&void 0!==t?t.exports=e():("undefined"!=typeof window?window:void 0!==r?r:"undefined"!=typeof self?self:this).JSZip=e()}(function(){return function s(a,o,u){function h(t,e){if(!o[t]){if(!a[t]){var r="function"==typeof l&&l;if(!e&&r)return r(t,!0);if(f)return f(t,!0);var n=new Error("Cannot find module '"+t+"'");throw n.code="MODULE_NOT_FOUND",n}var i=o[t]={exports:{}};a[t][0].call(i.exports,function(e){return h(a[t][1][e]||e)},i,i.exports,s,a,o,u)}return o[t].exports}for(var f="function"==typeof l&&l,e=0;e<u.length;e++)h(u[e]);return h}({1:[function(e,t,r){"use strict";var c=e("./utils"),l=e("./support"),p="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";r.encode=function(e){for(var t,r,n,i,s,a,o,u=[],h=0,f=e.length,l=f,d="string"!==c.getTypeOf(e);h<e.length;)l=f-h,n=d?(t=e[h++],r=h<f?e[h++]:0,h<f?e[h++]:0):(t=e.charCodeAt(h++),r=h<f?e.charCodeAt(h++):0,h<f?e.charCodeAt(h++):0),i=t>>2,s=(3&t)<<4|r>>4,a=1<l?(15&r)<<2|n>>6:64,o=2<l?63&n:64,u.push(p.charAt(i)+p.charAt(s)+p.charAt(a)+p.charAt(o));return u.join("")},r.decode=function(e){var t,r,n,i,s,a,o=0,u=0;if("data:"===e.substr(0,"data:".length))throw new Error("Invalid base64 input, it looks like a data url.");var h,f=3*(e=e.replace(/[^A-Za-z0-9\+\/\=]/g,"")).length/4;if(e.charAt(e.length-1)===p.charAt(64)&&f--,e.charAt(e.length-2)===p.charAt(64)&&f--,f%1!=0)throw new Error("Invalid base64 input, bad content length.");for(h=l.uint8array?new Uint8Array(0|f):new Array(0|f);o<e.length;)t=p.indexOf(e.charAt(o++))<<2|(i=p.indexOf(e.charAt(o++)))>>4,r=(15&i)<<4|(s=p.indexOf(e.charAt(o++)))>>2,n=(3&s)<<6|(a=p.indexOf(e.charAt(o++))),h[u++]=t,64!==s&&(h[u++]=r),64!==a&&(h[u++]=n);return h}},{"./support":30,"./utils":32}],2:[function(e,t,r){"use strict";var n=e("./external"),i=e("./stream/DataWorker"),s=e("./stream/Crc32Probe"),a=e("./stream/DataLengthProbe");function o(e,t,r,n,i){this.compressedSize=e,this.uncompressedSize=t,this.crc32=r,this.compression=n,this.compressedContent=i}o.prototype={getContentWorker:function(){var e=new i(n.Promise.resolve(this.compressedContent)).pipe(this.compression.uncompressWorker()).pipe(new a("data_length")),t=this;return e.on("end",function(){if(this.streamInfo.data_length!==t.uncompressedSize)throw new Error("Bug : uncompressed data size mismatch")}),e},getCompressedWorker:function(){return new i(n.Promise.resolve(this.compressedContent)).withStreamInfo("compressedSize",this.compressedSize).withStreamInfo("uncompressedSize",this.uncompressedSize).withStreamInfo("crc32",this.crc32).withStreamInfo("compression",this.compression)}},o.createWorkerFrom=function(e,t,r){return e.pipe(new s).pipe(new a("uncompressedSize")).pipe(t.compressWorker(r)).pipe(new a("compressedSize")).withStreamInfo("compression",t)},t.exports=o},{"./external":6,"./stream/Crc32Probe":25,"./stream/DataLengthProbe":26,"./stream/DataWorker":27}],3:[function(e,t,r){"use strict";var n=e("./stream/GenericWorker");r.STORE={magic:"\0\0",compressWorker:function(e){return new n("STORE compression")},uncompressWorker:function(){return new n("STORE decompression")}},r.DEFLATE=e("./flate")},{"./flate":7,"./stream/GenericWorker":28}],4:[function(e,t,r){"use strict";var n=e("./utils"),a=function(){for(var e,t=[],r=0;r<256;r++){e=r;for(var n=0;n<8;n++)e=1&e?3988292384^e>>>1:e>>>1;t[r]=e}return t}();t.exports=function(e,t){return void 0!==e&&e.length?"string"!==n.getTypeOf(e)?function(e,t,r){var n=a,i=0+r;e^=-1;for(var s=0;s<i;s++)e=e>>>8^n[255&(e^t[s])];return-1^e}(0|t,e,e.length):function(e,t,r){var n=a,i=0+r;e^=-1;for(var s=0;s<i;s++)e=e>>>8^n[255&(e^t.charCodeAt(s))];return-1^e}(0|t,e,e.length):0}},{"./utils":32}],5:[function(e,t,r){"use strict";r.base64=!1,r.binary=!1,r.dir=!1,r.createFolders=!0,r.date=null,r.compression=null,r.compressionOptions=null,r.comment=null,r.unixPermissions=null,r.dosPermissions=null},{}],6:[function(e,t,r){"use strict";var n;n="undefined"!=typeof Promise?Promise:e("lie"),t.exports={Promise:n}},{lie:37}],7:[function(e,t,r){"use strict";var n="undefined"!=typeof Uint8Array&&"undefined"!=typeof Uint16Array&&"undefined"!=typeof Uint32Array,i=e("pako"),s=e("./utils"),a=e("./stream/GenericWorker"),o=n?"uint8array":"array";function u(e,t){a.call(this,"FlateWorker/"+e),this._pako=null,this._pakoAction=e,this._pakoOptions=t,this.meta={}}r.magic="\b\0",s.inherits(u,a),u.prototype.processChunk=function(e){this.meta=e.meta,null===this._pako&&this._createPako(),this._pako.push(s.transformTo(o,e.data),!1)},u.prototype.flush=function(){a.prototype.flush.call(this),null===this._pako&&this._createPako(),this._pako.push([],!0)},u.prototype.cleanUp=function(){a.prototype.cleanUp.call(this),this._pako=null},u.prototype._createPako=function(){this._pako=new i[this._pakoAction]({raw:!0,level:this._pakoOptions.level||-1});var t=this;this._pako.onData=function(e){t.push({data:e,meta:t.meta})}},r.compressWorker=function(e){return new u("Deflate",e)},r.uncompressWorker=function(){return new u("Inflate",{})}},{"./stream/GenericWorker":28,"./utils":32,pako:38}],8:[function(e,t,r){"use strict";function I(e,t){var r,n="";for(r=0;r<t;r++)n+=String.fromCharCode(255&e),e>>>=8;return n}function i(e,t,r,n,i,s){var a,o,u=e.file,h=e.compression,f=s!==B.utf8encode,l=O.transformTo("string",s(u.name)),d=O.transformTo("string",B.utf8encode(u.name)),c=u.comment,p=O.transformTo("string",s(c)),m=O.transformTo("string",B.utf8encode(c)),_=d.length!==u.name.length,g=m.length!==c.length,v="",b="",w="",y=u.dir,k=u.date,x={crc32:0,compressedSize:0,uncompressedSize:0};t&&!r||(x.crc32=e.crc32,x.compressedSize=e.compressedSize,x.uncompressedSize=e.uncompressedSize);var S=0;t&&(S|=8),f||!_&&!g||(S|=2048);var z,E=0,C=0;y&&(E|=16),"UNIX"===i?(C=798,E|=((z=u.unixPermissions)||(z=y?16893:33204),(65535&z)<<16)):(C=20,E|=63&(u.dosPermissions||0)),a=k.getUTCHours(),a<<=6,a|=k.getUTCMinutes(),a<<=5,a|=k.getUTCSeconds()/2,o=k.getUTCFullYear()-1980,o<<=4,o|=k.getUTCMonth()+1,o<<=5,o|=k.getUTCDate(),_&&(v+="up"+I((b=I(1,1)+I(T(l),4)+d).length,2)+b),g&&(v+="uc"+I((w=I(1,1)+I(T(p),4)+m).length,2)+w);var A="";return A+="\n\0",A+=I(S,2),A+=h.magic,A+=I(a,2),A+=I(o,2),A+=I(x.crc32,4),A+=I(x.compressedSize,4),A+=I(x.uncompressedSize,4),A+=I(l.length,2),A+=I(v.length,2),{fileRecord:R.LOCAL_FILE_HEADER+A+l+v,dirRecord:R.CENTRAL_FILE_HEADER+I(C,2)+A+I(p.length,2)+"\0\0\0\0"+I(E,4)+I(n,4)+l+v+p}}var O=e("../utils"),s=e("../stream/GenericWorker"),B=e("../utf8"),T=e("../crc32"),R=e("../signature");function n(e,t,r,n){s.call(this,"ZipFileWorker"),this.bytesWritten=0,this.zipComment=t,this.zipPlatform=r,this.encodeFileName=n,this.streamFiles=e,this.accumulate=!1,this.contentBuffer=[],this.dirRecords=[],this.currentSourceOffset=0,this.entriesCount=0,this.currentFile=null,this._sources=[]}O.inherits(n,s),n.prototype.push=function(e){var t=e.meta.percent||0,r=this.entriesCount,n=this._sources.length;this.accumulate?this.contentBuffer.push(e):(this.bytesWritten+=e.data.length,s.prototype.push.call(this,{data:e.data,meta:{currentFile:this.currentFile,percent:r?(t+100*(r-n-1))/r:100}}))},n.prototype.openedSource=function(e){this.currentSourceOffset=this.bytesWritten,this.currentFile=e.file.name;var t=this.streamFiles&&!e.file.dir;if(t){var r=i(e,t,!1,this.currentSourceOffset,this.zipPlatform,this.encodeFileName);this.push({data:r.fileRecord,meta:{percent:0}})}else this.accumulate=!0},n.prototype.closedSource=function(e){this.accumulate=!1;var t,r=this.streamFiles&&!e.file.dir,n=i(e,r,!0,this.currentSourceOffset,this.zipPlatform,this.encodeFileName);if(this.dirRecords.push(n.dirRecord),r)this.push({data:(t=e,R.DATA_DESCRIPTOR+I(t.crc32,4)+I(t.compressedSize,4)+I(t.uncompressedSize,4)),meta:{percent:100}});else for(this.push({data:n.fileRecord,meta:{percent:0}});this.contentBuffer.length;)this.push(this.contentBuffer.shift());this.currentFile=null},n.prototype.flush=function(){for(var e=this.bytesWritten,t=0;t<this.dirRecords.length;t++)this.push({data:this.dirRecords[t],meta:{percent:100}});var r,n,i,s,a,o,u=this.bytesWritten-e,h=(r=this.dirRecords.length,n=u,i=e,s=this.zipComment,a=this.encodeFileName,o=O.transformTo("string",a(s)),R.CENTRAL_DIRECTORY_END+"\0\0\0\0"+I(r,2)+I(r,2)+I(n,4)+I(i,4)+I(o.length,2)+o);this.push({data:h,meta:{percent:100}})},n.prototype.prepareNextSource=function(){this.previous=this._sources.shift(),this.openedSource(this.previous.streamInfo),this.isPaused?this.previous.pause():this.previous.resume()},n.prototype.registerPrevious=function(e){this._sources.push(e);var t=this;return e.on("data",function(e){t.processChunk(e)}),e.on("end",function(){t.closedSource(t.previous.streamInfo),t._sources.length?t.prepareNextSource():t.end()}),e.on("error",function(e){t.error(e)}),this},n.prototype.resume=function(){return!!s.prototype.resume.call(this)&&(!this.previous&&this._sources.length?(this.prepareNextSource(),!0):this.previous||this._sources.length||this.generatedError?void 0:(this.end(),!0))},n.prototype.error=function(e){var t=this._sources;if(!s.prototype.error.call(this,e))return!1;for(var r=0;r<t.length;r++)try{t[r].error(e)}catch(e){}return!0},n.prototype.lock=function(){s.prototype.lock.call(this);for(var e=this._sources,t=0;t<e.length;t++)e[t].lock()},t.exports=n},{"../crc32":4,"../signature":23,"../stream/GenericWorker":28,"../utf8":31,"../utils":32}],9:[function(e,t,r){"use strict";var h=e("../compressions"),n=e("./ZipFileWorker");r.generateWorker=function(e,a,t){var o=new n(a.streamFiles,t,a.platform,a.encodeFileName),u=0;try{e.forEach(function(e,t){u++;var r=function(e,t){var r=e||t,n=h[r];if(!n)throw new Error(r+" is not a valid compression method !");return n}(t.options.compression,a.compression),n=t.options.compressionOptions||a.compressionOptions||{},i=t.dir,s=t.date;t._compressWorker(r,n).withStreamInfo("file",{name:e,dir:i,date:s,comment:t.comment||"",unixPermissions:t.unixPermissions,dosPermissions:t.dosPermissions}).pipe(o)}),o.entriesCount=u}catch(e){o.error(e)}return o}},{"../compressions":3,"./ZipFileWorker":8}],10:[function(e,t,r){"use strict";function n(){if(!(this instanceof n))return new n;if(arguments.length)throw new Error("The constructor with parameters has been removed in JSZip 3.0, please check the upgrade guide.");this.files={},this.comment=null,this.root="",this.clone=function(){var e=new n;for(var t in this)"function"!=typeof this[t]&&(e[t]=this[t]);return e}}(n.prototype=e("./object")).loadAsync=e("./load"),n.support=e("./support"),n.defaults=e("./defaults"),n.version="3.5.0",n.loadAsync=function(e,t){return(new n).loadAsync(e,t)},n.external=e("./external"),t.exports=n},{"./defaults":5,"./external":6,"./load":11,"./object":15,"./support":30}],11:[function(e,t,r){"use strict";var n=e("./utils"),i=e("./external"),o=e("./utf8"),u=e("./zipEntries"),s=e("./stream/Crc32Probe"),h=e("./nodejsUtils");function f(n){return new i.Promise(function(e,t){var r=n.decompressed.getContentWorker().pipe(new s);r.on("error",function(e){t(e)}).on("end",function(){r.streamInfo.crc32!==n.decompressed.crc32?t(new Error("Corrupted zip : CRC32 mismatch")):e()}).resume()})}t.exports=function(e,s){var a=this;return s=n.extend(s||{},{base64:!1,checkCRC32:!1,optimizedBinaryString:!1,createFolders:!1,decodeFileName:o.utf8decode}),h.isNode&&h.isStream(e)?i.Promise.reject(new Error("JSZip can't accept a stream when loading a zip file.")):n.prepareContent("the loaded zip 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n(e){this.name=e||"default",this.streamInfo={},this.generatedError=null,this.extraStreamInfo={},this.isPaused=!0,this.isFinished=!1,this.isLocked=!1,this._listeners={data:[],end:[],error:[]},this.previous=null}n.prototype={push:function(e){this.emit("data",e)},end:function(){if(this.isFinished)return!1;this.flush();try{this.emit("end"),this.cleanUp(),this.isFinished=!0}catch(e){this.emit("error",e)}return!0},error:function(e){return!this.isFinished&&(this.isPaused?this.generatedError=e:(this.isFinished=!0,this.emit("error",e),this.previous&&this.previous.error(e),this.cleanUp()),!0)},on:function(e,t){return this._listeners[e].push(t),this},cleanUp:function(){this.streamInfo=this.generatedError=this.extraStreamInfo=null,this._listeners=[]},emit:function(e,t){if(this._listeners[e])for(var r=0;r<this._listeners[e].length;r++)this._listeners[e][r].call(this,t)},pipe:function(e){return e.registerPrevious(this)},registerPrevious:function(e){if(this.isLocked)throw new Error("The stream 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o(this,{objectMode:"nodebuffer"!==this._outputType},e)}},t.exports=u},{"../base64":1,"../external":6,"../nodejs/NodejsStreamOutputAdapter":13,"../support":30,"../utils":32,"./ConvertWorker":24,"./GenericWorker":28}],30:[function(e,t,r){"use strict";if(r.base64=!0,r.array=!0,r.string=!0,r.arraybuffer="undefined"!=typeof ArrayBuffer&&"undefined"!=typeof Uint8Array,r.nodebuffer="undefined"!=typeof Buffer,r.uint8array="undefined"!=typeof Uint8Array,"undefined"==typeof ArrayBuffer)r.blob=!1;else{var n=new ArrayBuffer(0);try{r.blob=0===new Blob([n],{type:"application/zip"}).size}catch(e){try{var i=new(self.BlobBuilder||self.WebKitBlobBuilder||self.MozBlobBuilder||self.MSBlobBuilder);i.append(n),r.blob=0===i.getBlob("application/zip").size}catch(e){r.blob=!1}}}try{r.nodestream=!!e("readable-stream").Readable}catch(e){r.nodestream=!1}},{"readable-stream":16}],31:[function(e,t,s){"use strict";for(var o=e("./utils"),u=e("./support"),r=e("./nodejsUtils"),n=e("./stream/GenericWorker"),h=new Array(256),i=0;i<256;i++)h[i]=252<=i?6:248<=i?5:240<=i?4:224<=i?3:192<=i?2:1;function a(){n.call(this,"utf-8 decode"),this.leftOver=null}function f(){n.call(this,"utf-8 encode")}h[254]=h[254]=1,s.utf8encode=function(e){return u.nodebuffer?r.newBufferFrom(e,"utf-8"):function(e){var t,r,n,i,s,a=e.length,o=0;for(i=0;i<a;i++)55296==(64512&(r=e.charCodeAt(i)))&&i+1<a&&56320==(64512&(n=e.charCodeAt(i+1)))&&(r=65536+(r-55296<<10)+(n-56320),i++),o+=r<128?1:r<2048?2:r<65536?3:4;for(t=u.uint8array?new Uint8Array(o):new Array(o),i=s=0;s<o;i++)55296==(64512&(r=e.charCodeAt(i)))&&i+1<a&&56320==(64512&(n=e.charCodeAt(i+1)))&&(r=65536+(r-55296<<10)+(n-56320),i++),r<128?t[s++]=r:(r<2048?t[s++]=192|r>>>6:(r<65536?t[s++]=224|r>>>12:(t[s++]=240|r>>>18,t[s++]=128|r>>>12&63),t[s++]=128|r>>>6&63),t[s++]=128|63&r);return t}(e)},s.utf8decode=function(e){return u.nodebuffer?o.transformTo("nodebuffer",e).toString("utf-8"):function(e){var t,r,n,i,s=e.length,a=new Array(2*s);for(t=r=0;t<s;)if((n=e[t++])<128)a[r++]=n;else if(4<(i=h[n]))a[r++]=65533,t+=i-1;else{for(n&=2===i?31:3===i?15:7;1<i&&t<s;)n=n<<6|63&e[t++],i--;1<i?a[r++]=65533:n<65536?a[r++]=n:(n-=65536,a[r++]=55296|n>>10&1023,a[r++]=56320|1023&n)}return a.length!==r&&(a.subarray?a=a.subarray(0,r):a.length=r),o.applyFromCharCode(a)}(e=o.transformTo(u.uint8array?"uint8array":"array",e))},o.inherits(a,n),a.prototype.processChunk=function(e){var t=o.transformTo(u.uint8array?"uint8array":"array",e.data);if(this.leftOver&&this.leftOver.length){if(u.uint8array){var r=t;(t=new Uint8Array(r.length+this.leftOver.length)).set(this.leftOver,0),t.set(r,this.leftOver.length)}else t=this.leftOver.concat(t);this.leftOver=null}var n=function(e,t){var r;for((t=t||e.length)>e.length&&(t=e.length),r=t-1;0<=r&&128==(192&e[r]);)r--;return r<0?t:0===r?t:r+h[e[r]]>t?r:t}(t),i=t;n!==t.length&&(u.uint8array?(i=t.subarray(0,n),this.leftOver=t.subarray(n,t.length)):(i=t.slice(0,n),this.leftOver=t.slice(n,t.length))),this.push({data:s.utf8decode(i),meta:e.meta})},a.prototype.flush=function(){this.leftOver&&this.leftOver.length&&(this.push({data:s.utf8decode(this.leftOver),meta:{}}),this.leftOver=null)},s.Utf8DecodeWorker=a,o.inherits(f,n),f.prototype.processChunk=function(e){this.push({data:s.utf8encode(e.data),meta:e.meta})},s.Utf8EncodeWorker=f},{"./nodejsUtils":14,"./stream/GenericWorker":28,"./support":30,"./utils":32}],32:[function(e,t,o){"use strict";var u=e("./support"),h=e("./base64"),r=e("./nodejsUtils"),n=e("set-immediate-shim"),f=e("./external");function i(e){return e}function l(e,t){for(var r=0;r<e.length;++r)t[r]=255&e.charCodeAt(r);return t}o.newBlob=function(t,r){o.checkSupport("blob");try{return new Blob([t],{type:r})}catch(e){try{var n=new(self.BlobBuilder||self.WebKitBlobBuilder||self.MozBlobBuilder||self.MSBlobBuilder);return n.append(t),n.getBlob(r)}catch(e){throw new Error("Bug : can't construct the Blob.")}}};var s={stringifyByChunk:function(e,t,r){var n=[],i=0,s=e.length;if(s<=r)return String.fromCharCode.apply(null,e);for(;i<s;)"array"===t||"nodebuffer"===t?n.push(String.fromCharCode.apply(null,e.slice(i,Math.min(i+r,s)))):n.push(String.fromCharCode.apply(null,e.subarray(i,Math.min(i+r,s)))),i+=r;return n.join("")},stringifyByChar:function(e){for(var t="",r=0;r<e.length;r++)t+=String.fromCharCode(e[r]);return t},applyCanBeUsed:{uint8array:function(){try{return u.uint8array&&1===String.fromCharCode.apply(null,new Uint8Array(1)).length}catch(e){return!1}}(),nodebuffer:function(){try{return u.nodebuffer&&1===String.fromCharCode.apply(null,r.allocBuffer(1)).length}catch(e){return!1}}()}};function a(e){var t=65536,r=o.getTypeOf(e),n=!0;if("uint8array"===r?n=s.applyCanBeUsed.uint8array:"nodebuffer"===r&&(n=s.applyCanBeUsed.nodebuffer),n)for(;1<t;)try{return s.stringifyByChunk(e,r,t)}catch(e){t=Math.floor(t/2)}return s.stringifyByChar(e)}function d(e,t){for(var r=0;r<e.length;r++)t[r]=e[r];return t}o.applyFromCharCode=a;var c={};c.string={string:i,array:function(e){return l(e,new Array(e.length))},arraybuffer:function(e){return c.string.uint8array(e).buffer},uint8array:function(e){return l(e,new Uint8Array(e.length))},nodebuffer:function(e){return l(e,r.allocBuffer(e.length))}},c.array={string:a,array:i,arraybuffer:function(e){return new Uint8Array(e).buffer},uint8array:function(e){return new Uint8Array(e)},nodebuffer:function(e){return r.newBufferFrom(e)}},c.arraybuffer={string:function(e){return a(new Uint8Array(e))},array:function(e){return d(new Uint8Array(e),new Array(e.byteLength))},arraybuffer:i,uint8array:function(e){return new Uint8Array(e)},nodebuffer:function(e){return r.newBufferFrom(new Uint8Array(e))}},c.uint8array={string:a,array:function(e){return d(e,new Array(e.length))},arraybuffer:function(e){return e.buffer},uint8array:i,nodebuffer:function(e){return r.newBufferFrom(e)}},c.nodebuffer={string:a,array:function(e){return d(e,new Array(e.length))},arraybuffer:function(e){return c.nodebuffer.uint8array(e).buffer},uint8array:function(e){return d(e,new Uint8Array(e.length))},nodebuffer:i},o.transformTo=function(e,t){if(t=t||"",!e)return t;o.checkSupport(e);var r=o.getTypeOf(t);return c[r][e](t)},o.getTypeOf=function(e){return"string"==typeof e?"string":"[object Array]"===Object.prototype.toString.call(e)?"array":u.nodebuffer&&r.isBuffer(e)?"nodebuffer":u.uint8array&&e instanceof Uint8Array?"uint8array":u.arraybuffer&&e instanceof ArrayBuffer?"arraybuffer":void 0},o.checkSupport=function(e){if(!u[e.toLowerCase()])throw new Error(e+" is not supported by this platform")},o.MAX_VALUE_16BITS=65535,o.MAX_VALUE_32BITS=-1,o.pretty=function(e){var t,r,n="";for(r=0;r<(e||"").length;r++)n+="\\x"+((t=e.charCodeAt(r))<16?"0":"")+t.toString(16).toUpperCase();return n},o.delay=function(e,t,r){n(function(){e.apply(r||null,t||[])})},o.inherits=function(e,t){function r(){}r.prototype=t.prototype,e.prototype=new r},o.extend=function(){var e,t,r={};for(e=0;e<arguments.length;e++)for(t in arguments[e])arguments[e].hasOwnProperty(t)&&void 0===r[t]&&(r[t]=arguments[e][t]);return r},o.prepareContent=function(n,e,i,s,a){return f.Promise.resolve(e).then(function(n){return u.blob&&(n instanceof Blob||-1!==["[object File]","[object Blob]"].indexOf(Object.prototype.toString.call(n)))&&"undefined"!=typeof FileReader?new f.Promise(function(t,r){var e=new FileReader;e.onload=function(e){t(e.target.result)},e.onerror=function(e){r(e.target.error)},e.readAsArrayBuffer(n)}):n}).then(function(e){var t,r=o.getTypeOf(e);return r?("arraybuffer"===r?e=o.transformTo("uint8array",e):"string"===r&&(a?e=h.decode(e):i&&!0!==s&&(e=l(t=e,u.uint8array?new 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If it is, see https://stuk.github.io/jszip/documentation/howto/read_zip.html");this.reader.setIndex(e);var t=e;if(this.checkSignature(s.CENTRAL_DIRECTORY_END),this.readBlockEndOfCentral(),this.diskNumber===i.MAX_VALUE_16BITS||this.diskWithCentralDirStart===i.MAX_VALUE_16BITS||this.centralDirRecordsOnThisDisk===i.MAX_VALUE_16BITS||this.centralDirRecords===i.MAX_VALUE_16BITS||this.centralDirSize===i.MAX_VALUE_32BITS||this.centralDirOffset===i.MAX_VALUE_32BITS){if(this.zip64=!0,(e=this.reader.lastIndexOfSignature(s.ZIP64_CENTRAL_DIRECTORY_LOCATOR))<0)throw new Error("Corrupted zip: can't find the ZIP64 end of central directory locator");if(this.reader.setIndex(e),this.checkSignature(s.ZIP64_CENTRAL_DIRECTORY_LOCATOR),this.readBlockZip64EndOfCentralLocator(),!this.isSignature(this.relativeOffsetEndOfZip64CentralDir,s.ZIP64_CENTRAL_DIRECTORY_END)&&(this.relativeOffsetEndOfZip64CentralDir=this.reader.lastIndexOfSignature(s.ZIP64_CENTRAL_DIRECTORY_END),this.relativeOffsetEndOfZip64CentralDir<0))throw new Error("Corrupted zip: can't find the ZIP64 end of central directory");this.reader.setIndex(this.relativeOffsetEndOfZip64CentralDir),this.checkSignature(s.ZIP64_CENTRAL_DIRECTORY_END),this.readBlockZip64EndOfCentral()}var r=this.centralDirOffset+this.centralDirSize;this.zip64&&(r+=20,r+=12+this.zip64EndOfCentralSize);var n=t-r;if(0<n)this.isSignature(t,s.CENTRAL_FILE_HEADER)||(this.reader.zero=n);else if(n<0)throw new Error("Corrupted zip: missing "+Math.abs(n)+" bytes.")},prepareReader:function(e){this.reader=n(e)},load:function(e){this.prepareReader(e),this.readEndOfCentral(),this.readCentralDir(),this.readLocalFiles()}},t.exports=u},{"./reader/readerFor":22,"./signature":23,"./support":30,"./utf8":31,"./utils":32,"./zipEntry":34}],34:[function(e,t,r){"use strict";var n=e("./reader/readerFor"),s=e("./utils"),i=e("./compressedObject"),a=e("./crc32"),o=e("./utf8"),u=e("./compressions"),h=e("./support");function f(e,t){this.options=e,this.loadOptions=t}f.prototype={isEncrypted:function(){return 1==(1&this.bitFlag)},useUTF8:function(){return 2048==(2048&this.bitFlag)},readLocalPart:function(e){var t,r;if(e.skip(22),this.fileNameLength=e.readInt(2),r=e.readInt(2),this.fileName=e.readData(this.fileNameLength),e.skip(r),-1===this.compressedSize||-1===this.uncompressedSize)throw new Error("Bug or corrupted zip : didn't get enough information from the central directory (compressedSize === -1 || uncompressedSize === -1)");if(null===(t=function(e){for(var t in u)if(u.hasOwnProperty(t)&&u[t].magic===e)return u[t];return null}(this.compressionMethod)))throw new Error("Corrupted zip : compression "+s.pretty(this.compressionMethod)+" unknown (inner file : "+s.transformTo("string",this.fileName)+")");this.decompressed=new i(this.compressedSize,this.uncompressedSize,this.crc32,t,e.readData(this.compressedSize))},readCentralPart:function(e){this.versionMadeBy=e.readInt(2),e.skip(2),this.bitFlag=e.readInt(2),this.compressionMethod=e.readString(2),this.date=e.readDate(),this.crc32=e.readInt(4),this.compressedSize=e.readInt(4),this.uncompressedSize=e.readInt(4);var t=e.readInt(2);if(this.extraFieldsLength=e.readInt(2),this.fileCommentLength=e.readInt(2),this.diskNumberStart=e.readInt(2),this.internalFileAttributes=e.readInt(2),this.externalFileAttributes=e.readInt(4),this.localHeaderOffset=e.readInt(4),this.isEncrypted())throw new Error("Encrypted zip are not supported");e.skip(t),this.readExtraFields(e),this.parseZIP64ExtraField(e),this.fileComment=e.readData(this.fileCommentLength)},processAttributes:function(){this.unixPermissions=null,this.dosPermissions=null;var e=this.versionMadeBy>>8;this.dir=!!(16&this.externalFileAttributes),0==e&&(this.dosPermissions=63&this.externalFileAttributes),3==e&&(this.unixPermissions=this.externalFileAttributes>>16&65535),this.dir||"/"!==this.fileNameStr.slice(-1)||(this.dir=!0)},parseZIP64ExtraField:function(e){if(this.extraFields[1]){var t=n(this.extraFields[1].value);this.uncompressedSize===s.MAX_VALUE_32BITS&&(this.uncompressedSize=t.readInt(8)),this.compressedSize===s.MAX_VALUE_32BITS&&(this.compressedSize=t.readInt(8)),this.localHeaderOffset===s.MAX_VALUE_32BITS&&(this.localHeaderOffset=t.readInt(8)),this.diskNumberStart===s.MAX_VALUE_32BITS&&(this.diskNumberStart=t.readInt(4))}},readExtraFields:function(e){var t,r,n,i=e.index+this.extraFieldsLength;for(this.extraFields||(this.extraFields={});e.index+4<i;)t=e.readInt(2),r=e.readInt(2),n=e.readData(r),this.extraFields[t]={id:t,length:r,value:n};e.setIndex(i)},handleUTF8:function(){var e=h.uint8array?"uint8array":"array";if(this.useUTF8())this.fileNameStr=o.utf8decode(this.fileName),this.fileCommentStr=o.utf8decode(this.fileComment);else{var t=this.findExtraFieldUnicodePath();if(null!==t)this.fileNameStr=t;else{var r=s.transformTo(e,this.fileName);this.fileNameStr=this.loadOptions.decodeFileName(r)}var n=this.findExtraFieldUnicodeComment();if(null!==n)this.fileCommentStr=n;else{var i=s.transformTo(e,this.fileComment);this.fileCommentStr=this.loadOptions.decodeFileName(i)}}},findExtraFieldUnicodePath:function(){var e=this.extraFields[28789];if(e){var t=n(e.value);return 1!==t.readInt(1)?null:a(this.fileName)!==t.readInt(4)?null:o.utf8decode(t.readData(e.length-5))}return null},findExtraFieldUnicodeComment:function(){var e=this.extraFields[25461];if(e){var t=n(e.value);return 1!==t.readInt(1)?null:a(this.fileComment)!==t.readInt(4)?null:o.utf8decode(t.readData(e.length-5))}return null}},t.exports=f},{"./compressedObject":2,"./compressions":3,"./crc32":4,"./reader/readerFor":22,"./support":30,"./utf8":31,"./utils":32}],35:[function(e,t,r){"use strict";function n(e,t,r){this.name=e,this.dir=r.dir,this.date=r.date,this.comment=r.comment,this.unixPermissions=r.unixPermissions,this.dosPermissions=r.dosPermissions,this._data=t,this._dataBinary=r.binary,this.options={compression:r.compression,compressionOptions:r.compressionOptions}}var s=e("./stream/StreamHelper"),i=e("./stream/DataWorker"),a=e("./utf8"),o=e("./compressedObject"),u=e("./stream/GenericWorker");n.prototype={internalStream:function(e){var t=null,r="string";try{if(!e)throw new Error("No output type specified.");var n="string"===(r=e.toLowerCase())||"text"===r;"binarystring"!==r&&"text"!==r||(r="string"),t=this._decompressWorker();var i=!this._dataBinary;i&&!n&&(t=t.pipe(new a.Utf8EncodeWorker)),!i&&n&&(t=t.pipe(new a.Utf8DecodeWorker))}catch(e){(t=new u("error")).error(e)}return new s(t,r,"")},async:function(e,t){return this.internalStream(e).accumulate(t)},nodeStream:function(e,t){return this.internalStream(e||"nodebuffer").toNodejsStream(t)},_compressWorker:function(e,t){if(this._data instanceof o&&this._data.compression.magic===e.magic)return this._data.getCompressedWorker();var r=this._decompressWorker();return this._dataBinary||(r=r.pipe(new a.Utf8EncodeWorker)),o.createWorkerFrom(r,e,t)},_decompressWorker:function(){return this._data instanceof o?this._data.getContentWorker():this._data instanceof u?this._data:new i(this._data)}};for(var h=["asText","asBinary","asNodeBuffer","asUint8Array","asArrayBuffer"],f=function(){throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.")},l=0;l<h.length;l++)n.prototype[h[l]]=f;t.exports=n},{"./compressedObject":2,"./stream/DataWorker":27,"./stream/GenericWorker":28,"./stream/StreamHelper":29,"./utf8":31}],36:[function(e,f,t){(function(t){"use strict";var r,n,e=t.MutationObserver||t.WebKitMutationObserver;if(e){var i=0,s=new e(h),a=t.document.createTextNode("");s.observe(a,{characterData:!0}),r=function(){a.data=i=++i%2}}else if(t.setImmediate||void 0===t.MessageChannel)r="document"in t&&"onreadystatechange"in t.document.createElement("script")?function(){var e=t.document.createElement("script");e.onreadystatechange=function(){h(),e.onreadystatechange=null,e.parentNode.removeChild(e),e=null},t.document.documentElement.appendChild(e)}:function(){setTimeout(h,0)};else{var o=new t.MessageChannel;o.port1.onmessage=h,r=function(){o.port2.postMessage(0)}}var u=[];function h(){var e,t;n=!0;for(var 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1;if(0===e.lookahead)break}if(r=0,e.lookahead>=b&&(e.ins_h=(e.ins_h<<e.hash_shift^e.window[e.strstart+b-1])&e.hash_mask,r=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart),e.prev_length=e.match_length,e.prev_match=e.match_start,e.match_length=b-1,0!==r&&e.prev_length<e.max_lazy_match&&e.strstart-r<=e.w_size-y&&(e.match_length=B(e,r),e.match_length<=5&&(1===e.strategy||e.match_length===b&&4096<e.strstart-e.match_start)&&(e.match_length=b-1)),e.prev_length>=b&&e.match_length<=e.prev_length){for(i=e.strstart+e.lookahead-b,n=h._tr_tally(e,e.strstart-1-e.prev_match,e.prev_length-b),e.lookahead-=e.prev_length-1,e.prev_length-=2;++e.strstart<=i&&(e.ins_h=(e.ins_h<<e.hash_shift^e.window[e.strstart+b-1])&e.hash_mask,r=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart),0!=--e.prev_length;);if(e.match_available=0,e.match_length=b-1,e.strstart++,n&&(A(e,!1),0===e.strm.avail_out))return 1}else if(e.match_available){if((n=h._tr_tally(e,0,e.window[e.strstart-1]))&&A(e,!1),e.strstart++,e.lookahead--,0===e.strm.avail_out)return 1}else e.match_available=1,e.strstart++,e.lookahead--}return e.match_available&&(n=h._tr_tally(e,0,e.window[e.strstart-1]),e.match_available=0),e.insert=e.strstart<b-1?e.strstart:b-1,4===t?(A(e,!0),0===e.strm.avail_out?3:4):e.last_lit&&(A(e,!1),0===e.strm.avail_out)?1:2}function F(e,t,r,n,i){this.good_length=e,this.max_lazy=t,this.nice_length=r,this.max_chain=n,this.func=i}function N(){this.strm=null,this.status=0,this.pending_buf=null,this.pending_buf_size=0,this.pending_out=0,this.pending=0,this.wrap=0,this.gzhead=null,this.gzindex=0,this.method=_,this.last_flush=-1,this.w_size=0,this.w_bits=0,this.w_mask=0,this.window=null,this.window_size=0,this.prev=null,this.head=null,this.ins_h=0,this.hash_size=0,this.hash_bits=0,this.hash_mask=0,this.hash_shift=0,this.block_start=0,this.match_length=0,this.prev_match=0,this.match_available=0,this.strstart=0,this.match_start=0,this.lookahead=0,this.prev_length=0,this.max_chain_length=0,this.max_lazy_match=0,this.level=0,this.strategy=0,this.good_match=0,this.nice_match=0,this.dyn_ltree=new d.Buf16(2*g),this.dyn_dtree=new d.Buf16(2*(2*a+1)),this.bl_tree=new d.Buf16(2*(2*o+1)),E(this.dyn_ltree),E(this.dyn_dtree),E(this.bl_tree),this.l_desc=null,this.d_desc=null,this.bl_desc=null,this.bl_count=new d.Buf16(v+1),this.heap=new d.Buf16(2*s+1),E(this.heap),this.heap_len=0,this.heap_max=0,this.depth=new d.Buf16(2*s+1),E(this.depth),this.l_buf=0,this.lit_bufsize=0,this.last_lit=0,this.d_buf=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0}function U(e){var t;return e&&e.state?(e.total_in=e.total_out=0,e.data_type=i,(t=e.state).pending=0,t.pending_out=0,t.wrap<0&&(t.wrap=-t.wrap),t.status=t.wrap?k:x,e.adler=2===t.wrap?0:1,t.last_flush=f,h._tr_init(t),l):S(e,m)}function P(e){var t,r=U(e);return r===l&&((t=e.state).window_size=2*t.w_size,E(t.head),t.max_lazy_match=u[t.level].max_lazy,t.good_match=u[t.level].good_length,t.nice_match=u[t.level].nice_length,t.max_chain_length=u[t.level].max_chain,t.strstart=0,t.block_start=0,t.lookahead=0,t.insert=0,t.match_length=t.prev_length=b-1,t.match_available=0,t.ins_h=0),r}function L(e,t,r,n,i,s){if(!e)return m;var a=1;if(-1===t&&(t=6),n<0?(a=0,n=-n):15<n&&(a=2,n-=16),i<1||9<i||r!==_||n<8||15<n||t<0||9<t||s<0||4<s)return S(e,m);8===n&&(n=9);var o=new N;return(e.state=o).strm=e,o.wrap=a,o.gzhead=null,o.w_bits=n,o.w_size=1<<o.w_bits,o.w_mask=o.w_size-1,o.hash_bits=i+7,o.hash_size=1<<o.hash_bits,o.hash_mask=o.hash_size-1,o.hash_shift=~~((o.hash_bits+b-1)/b),o.window=new d.Buf8(2*o.w_size),o.head=new d.Buf16(o.hash_size),o.prev=new d.Buf16(o.w_size),o.lit_bufsize=1<<i+6,o.pending_buf_size=4*o.lit_bufsize,o.pending_buf=new d.Buf8(o.pending_buf_size),o.d_buf=1*o.lit_bufsize,o.l_buf=3*o.lit_bufsize,o.level=t,o.strategy=s,o.method=r,P(e)}u=[new F(0,0,0,0,function(e,t){var r=65535;for(r>e.pending_buf_size-5&&(r=e.pending_buf_size-5);;){if(e.lookahead<=1){if(T(e),0===e.lookahead&&t===f)return 1;if(0===e.lookahead)break}e.strstart+=e.lookahead,e.lookahead=0;var n=e.block_start+r;if((0===e.strstart||e.strstart>=n)&&(e.lookahead=e.strstart-n,e.strstart=n,A(e,!1),0===e.strm.avail_out))return 1;if(e.strstart-e.block_start>=e.w_size-y&&(A(e,!1),0===e.strm.avail_out))return 1}return e.insert=0,4===t?(A(e,!0),0===e.strm.avail_out?3:4):(e.strstart>e.block_start&&(A(e,!1),e.strm.avail_out),1)}),new F(4,4,8,4,R),new F(4,5,16,8,R),new F(4,6,32,32,R),new F(4,4,16,16,D),new F(8,16,32,32,D),new F(8,16,128,128,D),new F(8,32,128,256,D),new F(32,128,258,1024,D),new F(32,258,258,4096,D)],r.deflateInit=function(e,t){return L(e,t,_,15,8,0)},r.deflateInit2=L,r.deflateReset=P,r.deflateResetKeep=U,r.deflateSetHeader=function(e,t){return e&&e.state?2!==e.state.wrap?m:(e.state.gzhead=t,l):m},r.deflate=function(e,t){var r,n,i,s;if(!e||!e.state||5<t||t<0)return e?S(e,m):m;if(n=e.state,!e.output||!e.input&&0!==e.avail_in||666===n.status&&4!==t)return S(e,0===e.avail_out?-5:m);if(n.strm=e,r=n.last_flush,n.last_flush=t,n.status===k)if(2===n.wrap)e.adler=0,I(n,31),I(n,139),I(n,8),n.gzhead?(I(n,(n.gzhead.text?1:0)+(n.gzhead.hcrc?2:0)+(n.gzhead.extra?4:0)+(n.gzhead.name?8:0)+(n.gzhead.comment?16:0)),I(n,255&n.gzhead.time),I(n,n.gzhead.time>>8&255),I(n,n.gzhead.time>>16&255),I(n,n.gzhead.time>>24&255),I(n,9===n.level?2:2<=n.strategy||n.level<2?4:0),I(n,255&n.gzhead.os),n.gzhead.extra&&n.gzhead.extra.length&&(I(n,255&n.gzhead.extra.length),I(n,n.gzhead.extra.length>>8&255)),n.gzhead.hcrc&&(e.adler=p(e.adler,n.pending_buf,n.pending,0)),n.gzindex=0,n.status=69):(I(n,0),I(n,0),I(n,0),I(n,0),I(n,0),I(n,9===n.level?2:2<=n.strategy||n.level<2?4:0),I(n,3),n.status=x);else{var a=_+(n.w_bits-8<<4)<<8;a|=(2<=n.strategy||n.level<2?0:n.level<6?1:6===n.level?2:3)<<6,0!==n.strstart&&(a|=32),a+=31-a%31,n.status=x,O(n,a),0!==n.strstart&&(O(n,e.adler>>>16),O(n,65535&e.adler)),e.adler=1}if(69===n.status)if(n.gzhead.extra){for(i=n.pending;n.gzindex<(65535&n.gzhead.extra.length)&&(n.pending!==n.pending_buf_size||(n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),C(e),i=n.pending,n.pending!==n.pending_buf_size));)I(n,255&n.gzhead.extra[n.gzindex]),n.gzindex++;n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),n.gzindex===n.gzhead.extra.length&&(n.gzindex=0,n.status=73)}else n.status=73;if(73===n.status)if(n.gzhead.name){i=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),C(e),i=n.pending,n.pending===n.pending_buf_size)){s=1;break}s=n.gzindex<n.gzhead.name.length?255&n.gzhead.name.charCodeAt(n.gzindex++):0,I(n,s)}while(0!==s);n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),0===s&&(n.gzindex=0,n.status=91)}else n.status=91;if(91===n.status)if(n.gzhead.comment){i=n.pending;do{if(n.pending===n.pending_buf_size&&(n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),C(e),i=n.pending,n.pending===n.pending_buf_size)){s=1;break}s=n.gzindex<n.gzhead.comment.length?255&n.gzhead.comment.charCodeAt(n.gzindex++):0,I(n,s)}while(0!==s);n.gzhead.hcrc&&n.pending>i&&(e.adler=p(e.adler,n.pending_buf,n.pending-i,i)),0===s&&(n.status=103)}else n.status=103;if(103===n.status&&(n.gzhead.hcrc?(n.pending+2>n.pending_buf_size&&C(e),n.pending+2<=n.pending_buf_size&&(I(n,255&e.adler),I(n,e.adler>>8&255),e.adler=0,n.status=x)):n.status=x),0!==n.pending){if(C(e),0===e.avail_out)return n.last_flush=-1,l}else if(0===e.avail_in&&z(t)<=z(r)&&4!==t)return S(e,-5);if(666===n.status&&0!==e.avail_in)return S(e,-5);if(0!==e.avail_in||0!==n.lookahead||t!==f&&666!==n.status){var o=2===n.strategy?function(e,t){for(var r;;){if(0===e.lookahead&&(T(e),0===e.lookahead)){if(t===f)return 1;break}if(e.match_length=0,r=h._tr_tally(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++,r&&(A(e,!1),0===e.strm.avail_out))return 1}return e.insert=0,4===t?(A(e,!0),0===e.strm.avail_out?3:4):e.last_lit&&(A(e,!1),0===e.strm.avail_out)?1:2}(n,t):3===n.strategy?function(e,t){for(var r,n,i,s,a=e.window;;){if(e.lookahead<=w){if(T(e),e.lookahead<=w&&t===f)return 1;if(0===e.lookahead)break}if(e.match_length=0,e.lookahead>=b&&0<e.strstart&&(n=a[i=e.strstart-1])===a[++i]&&n===a[++i]&&n===a[++i]){s=e.strstart+w;do{}while(n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&n===a[++i]&&i<s);e.match_length=w-(s-i),e.match_length>e.lookahead&&(e.match_length=e.lookahead)}if(e.match_length>=b?(r=h._tr_tally(e,1,e.match_length-b),e.lookahead-=e.match_length,e.strstart+=e.match_length,e.match_length=0):(r=h._tr_tally(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++),r&&(A(e,!1),0===e.strm.avail_out))return 1}return e.insert=0,4===t?(A(e,!0),0===e.strm.avail_out?3:4):e.last_lit&&(A(e,!1),0===e.strm.avail_out)?1:2}(n,t):u[n.level].func(n,t);if(3!==o&&4!==o||(n.status=666),1===o||3===o)return 0===e.avail_out&&(n.last_flush=-1),l;if(2===o&&(1===t?h._tr_align(n):5!==t&&(h._tr_stored_block(n,0,0,!1),3===t&&(E(n.head),0===n.lookahead&&(n.strstart=0,n.block_start=0,n.insert=0))),C(e),0===e.avail_out))return n.last_flush=-1,l}return 4!==t?l:n.wrap<=0?1:(2===n.wrap?(I(n,255&e.adler),I(n,e.adler>>8&255),I(n,e.adler>>16&255),I(n,e.adler>>24&255),I(n,255&e.total_in),I(n,e.total_in>>8&255),I(n,e.total_in>>16&255),I(n,e.total_in>>24&255)):(O(n,e.adler>>>16),O(n,65535&e.adler)),C(e),0<n.wrap&&(n.wrap=-n.wrap),0!==n.pending?l:1)},r.deflateEnd=function(e){var t;return e&&e.state?(t=e.state.status)!==k&&69!==t&&73!==t&&91!==t&&103!==t&&t!==x&&666!==t?S(e,m):(e.state=null,t===x?S(e,-3):l):m},r.deflateSetDictionary=function(e,t){var r,n,i,s,a,o,u,h,f=t.length;if(!e||!e.state)return m;if(2===(s=(r=e.state).wrap)||1===s&&r.status!==k||r.lookahead)return m;for(1===s&&(e.adler=c(e.adler,t,f,0)),r.wrap=0,f>=r.w_size&&(0===s&&(E(r.head),r.strstart=0,r.block_start=0,r.insert=0),h=new d.Buf8(r.w_size),d.arraySet(h,t,f-r.w_size,r.w_size,0),t=h,f=r.w_size),a=e.avail_in,o=e.next_in,u=e.input,e.avail_in=f,e.next_in=0,e.input=t,T(r);r.lookahead>=b;){for(n=r.strstart,i=r.lookahead-(b-1);r.ins_h=(r.ins_h<<r.hash_shift^r.window[n+b-1])&r.hash_mask,r.prev[n&r.w_mask]=r.head[r.ins_h],r.head[r.ins_h]=n,n++,--i;);r.strstart=n,r.lookahead=b-1,T(r)}return r.strstart+=r.lookahead,r.block_start=r.strstart,r.insert=r.lookahead,r.lookahead=0,r.match_length=r.prev_length=b-1,r.match_available=0,e.next_in=o,e.input=u,e.avail_in=a,r.wrap=s,l},r.deflateInfo="pako deflate (from Nodeca project)"},{"../utils/common":41,"./adler32":43,"./crc32":45,"./messages":51,"./trees":52}],47:[function(e,t,r){"use strict";t.exports=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1}},{}],48:[function(e,t,r){"use strict";t.exports=function(e,t){var r,n,i,s,a,o,u,h,f,l,d,c,p,m,_,g,v,b,w,y,k,x,S,z,E;r=e.state,n=e.next_in,z=e.input,i=n+(e.avail_in-5),s=e.next_out,E=e.output,a=s-(t-e.avail_out),o=s+(e.avail_out-257),u=r.dmax,h=r.wsize,f=r.whave,l=r.wnext,d=r.window,c=r.hold,p=r.bits,m=r.lencode,_=r.distcode,g=(1<<r.lenbits)-1,v=(1<<r.distbits)-1;e:do{p<15&&(c+=z[n++]<<p,p+=8,c+=z[n++]<<p,p+=8),b=m[c&g];t:for(;;){if(c>>>=w=b>>>24,p-=w,0==(w=b>>>16&255))E[s++]=65535&b;else{if(!(16&w)){if(0==(64&w)){b=m[(65535&b)+(c&(1<<w)-1)];continue t}if(32&w){r.mode=12;break e}e.msg="invalid literal/length code",r.mode=30;break e}y=65535&b,(w&=15)&&(p<w&&(c+=z[n++]<<p,p+=8),y+=c&(1<<w)-1,c>>>=w,p-=w),p<15&&(c+=z[n++]<<p,p+=8,c+=z[n++]<<p,p+=8),b=_[c&v];r:for(;;){if(c>>>=w=b>>>24,p-=w,!(16&(w=b>>>16&255))){if(0==(64&w)){b=_[(65535&b)+(c&(1<<w)-1)];continue r}e.msg="invalid distance code",r.mode=30;break e}if(k=65535&b,p<(w&=15)&&(c+=z[n++]<<p,(p+=8)<w&&(c+=z[n++]<<p,p+=8)),u<(k+=c&(1<<w)-1)){e.msg="invalid distance too far back",r.mode=30;break e}if(c>>>=w,p-=w,(w=s-a)<k){if(f<(w=k-w)&&r.sane){e.msg="invalid distance too far back",r.mode=30;break e}if(S=d,(x=0)===l){if(x+=h-w,w<y){for(y-=w;E[s++]=d[x++],--w;);x=s-k,S=E}}else if(l<w){if(x+=h+l-w,(w-=l)<y){for(y-=w;E[s++]=d[x++],--w;);if(x=0,l<y){for(y-=w=l;E[s++]=d[x++],--w;);x=s-k,S=E}}}else if(x+=l-w,w<y){for(y-=w;E[s++]=d[x++],--w;);x=s-k,S=E}for(;2<y;)E[s++]=S[x++],E[s++]=S[x++],E[s++]=S[x++],y-=3;y&&(E[s++]=S[x++],1<y&&(E[s++]=S[x++]))}else{for(x=s-k;E[s++]=E[x++],E[s++]=E[x++],E[s++]=E[x++],2<(y-=3););y&&(E[s++]=E[x++],1<y&&(E[s++]=E[x++]))}break}}break}}while(n<i&&s<o);n-=y=p>>3,c&=(1<<(p-=y<<3))-1,e.next_in=n,e.next_out=s,e.avail_in=n<i?i-n+5:5-(n-i),e.avail_out=s<o?o-s+257:257-(s-o),r.hold=c,r.bits=p}},{}],49:[function(e,t,r){"use strict";var I=e("../utils/common"),O=e("./adler32"),B=e("./crc32"),T=e("./inffast"),R=e("./inftrees"),D=1,F=2,N=0,U=-2,P=1,n=852,i=592;function L(e){return(e>>>24&255)+(e>>>8&65280)+((65280&e)<<8)+((255&e)<<24)}function s(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new I.Buf16(320),this.work=new I.Buf16(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}function a(e){var t;return e&&e.state?(t=e.state,e.total_in=e.total_out=t.total=0,e.msg="",t.wrap&&(e.adler=1&t.wrap),t.mode=P,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new I.Buf32(n),t.distcode=t.distdyn=new I.Buf32(i),t.sane=1,t.back=-1,N):U}function o(e){var t;return e&&e.state?((t=e.state).wsize=0,t.whave=0,t.wnext=0,a(e)):U}function u(e,t){var r,n;return e&&e.state?(n=e.state,t<0?(r=0,t=-t):(r=1+(t>>4),t<48&&(t&=15)),t&&(t<8||15<t)?U:(null!==n.window&&n.wbits!==t&&(n.window=null),n.wrap=r,n.wbits=t,o(e))):U}function h(e,t){var r,n;return e?(n=new s,(e.state=n).window=null,(r=u(e,t))!==N&&(e.state=null),r):U}var f,l,d=!0;function j(e){if(d){var t;for(f=new I.Buf32(512),l=new I.Buf32(32),t=0;t<144;)e.lens[t++]=8;for(;t<256;)e.lens[t++]=9;for(;t<280;)e.lens[t++]=7;for(;t<288;)e.lens[t++]=8;for(R(D,e.lens,0,288,f,0,e.work,{bits:9}),t=0;t<32;)e.lens[t++]=5;R(F,e.lens,0,32,l,0,e.work,{bits:5}),d=!1}e.lencode=f,e.lenbits=9,e.distcode=l,e.distbits=5}function Z(e,t,r,n){var i,s=e.state;return null===s.window&&(s.wsize=1<<s.wbits,s.wnext=0,s.whave=0,s.window=new I.Buf8(s.wsize)),n>=s.wsize?(I.arraySet(s.window,t,r-s.wsize,s.wsize,0),s.wnext=0,s.whave=s.wsize):(n<(i=s.wsize-s.wnext)&&(i=n),I.arraySet(s.window,t,r-n,i,s.wnext),(n-=i)?(I.arraySet(s.window,t,r-n,n,0),s.wnext=n,s.whave=s.wsize):(s.wnext+=i,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=i))),0}r.inflateReset=o,r.inflateReset2=u,r.inflateResetKeep=a,r.inflateInit=function(e){return h(e,15)},r.inflateInit2=h,r.inflate=function(e,t){var r,n,i,s,a,o,u,h,f,l,d,c,p,m,_,g,v,b,w,y,k,x,S,z,E=0,C=new I.Buf8(4),A=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];if(!e||!e.state||!e.output||!e.input&&0!==e.avail_in)return U;12===(r=e.state).mode&&(r.mode=13),a=e.next_out,i=e.output,u=e.avail_out,s=e.next_in,n=e.input,o=e.avail_in,h=r.hold,f=r.bits,l=o,d=u,x=N;e:for(;;)switch(r.mode){case P:if(0===r.wrap){r.mode=13;break}for(;f<16;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}if(2&r.wrap&&35615===h){C[r.check=0]=255&h,C[1]=h>>>8&255,r.check=B(r.check,C,2,0),f=h=0,r.mode=2;break}if(r.flags=0,r.head&&(r.head.done=!1),!(1&r.wrap)||(((255&h)<<8)+(h>>8))%31){e.msg="incorrect header check",r.mode=30;break}if(8!=(15&h)){e.msg="unknown compression method",r.mode=30;break}if(f-=4,k=8+(15&(h>>>=4)),0===r.wbits)r.wbits=k;else if(k>r.wbits){e.msg="invalid window size",r.mode=30;break}r.dmax=1<<k,e.adler=r.check=1,r.mode=512&h?10:12,f=h=0;break;case 2:for(;f<16;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}if(r.flags=h,8!=(255&r.flags)){e.msg="unknown compression method",r.mode=30;break}if(57344&r.flags){e.msg="unknown header flags set",r.mode=30;break}r.head&&(r.head.text=h>>8&1),512&r.flags&&(C[0]=255&h,C[1]=h>>>8&255,r.check=B(r.check,C,2,0)),f=h=0,r.mode=3;case 3:for(;f<32;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}r.head&&(r.head.time=h),512&r.flags&&(C[0]=255&h,C[1]=h>>>8&255,C[2]=h>>>16&255,C[3]=h>>>24&255,r.check=B(r.check,C,4,0)),f=h=0,r.mode=4;case 4:for(;f<16;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}r.head&&(r.head.xflags=255&h,r.head.os=h>>8),512&r.flags&&(C[0]=255&h,C[1]=h>>>8&255,r.check=B(r.check,C,2,0)),f=h=0,r.mode=5;case 5:if(1024&r.flags){for(;f<16;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}r.length=h,r.head&&(r.head.extra_len=h),512&r.flags&&(C[0]=255&h,C[1]=h>>>8&255,r.check=B(r.check,C,2,0)),f=h=0}else r.head&&(r.head.extra=null);r.mode=6;case 6:if(1024&r.flags&&(o<(c=r.length)&&(c=o),c&&(r.head&&(k=r.head.extra_len-r.length,r.head.extra||(r.head.extra=new Array(r.head.extra_len)),I.arraySet(r.head.extra,n,s,c,k)),512&r.flags&&(r.check=B(r.check,n,c,s)),o-=c,s+=c,r.length-=c),r.length))break e;r.length=0,r.mode=7;case 7:if(2048&r.flags){if(0===o)break e;for(c=0;k=n[s+c++],r.head&&k&&r.length<65536&&(r.head.name+=String.fromCharCode(k)),k&&c<o;);if(512&r.flags&&(r.check=B(r.check,n,c,s)),o-=c,s+=c,k)break e}else r.head&&(r.head.name=null);r.length=0,r.mode=8;case 8:if(4096&r.flags){if(0===o)break e;for(c=0;k=n[s+c++],r.head&&k&&r.length<65536&&(r.head.comment+=String.fromCharCode(k)),k&&c<o;);if(512&r.flags&&(r.check=B(r.check,n,c,s)),o-=c,s+=c,k)break e}else r.head&&(r.head.comment=null);r.mode=9;case 9:if(512&r.flags){for(;f<16;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}if(h!==(65535&r.check)){e.msg="header crc mismatch",r.mode=30;break}f=h=0}r.head&&(r.head.hcrc=r.flags>>9&1,r.head.done=!0),e.adler=r.check=0,r.mode=12;break;case 10:for(;f<32;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}e.adler=r.check=L(h),f=h=0,r.mode=11;case 11:if(0===r.havedict)return e.next_out=a,e.avail_out=u,e.next_in=s,e.avail_in=o,r.hold=h,r.bits=f,2;e.adler=r.check=1,r.mode=12;case 12:if(5===t||6===t)break e;case 13:if(r.last){h>>>=7&f,f-=7&f,r.mode=27;break}for(;f<3;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}switch(r.last=1&h,f-=1,3&(h>>>=1)){case 0:r.mode=14;break;case 1:if(j(r),r.mode=20,6!==t)break;h>>>=2,f-=2;break e;case 2:r.mode=17;break;case 3:e.msg="invalid block type",r.mode=30}h>>>=2,f-=2;break;case 14:for(h>>>=7&f,f-=7&f;f<32;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}if((65535&h)!=(h>>>16^65535)){e.msg="invalid stored block lengths",r.mode=30;break}if(r.length=65535&h,f=h=0,r.mode=15,6===t)break e;case 15:r.mode=16;case 16:if(c=r.length){if(o<c&&(c=o),u<c&&(c=u),0===c)break e;I.arraySet(i,n,s,c,a),o-=c,s+=c,u-=c,a+=c,r.length-=c;break}r.mode=12;break;case 17:for(;f<14;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}if(r.nlen=257+(31&h),h>>>=5,f-=5,r.ndist=1+(31&h),h>>>=5,f-=5,r.ncode=4+(15&h),h>>>=4,f-=4,286<r.nlen||30<r.ndist){e.msg="too many length or distance symbols",r.mode=30;break}r.have=0,r.mode=18;case 18:for(;r.have<r.ncode;){for(;f<3;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}r.lens[A[r.have++]]=7&h,h>>>=3,f-=3}for(;r.have<19;)r.lens[A[r.have++]]=0;if(r.lencode=r.lendyn,r.lenbits=7,S={bits:r.lenbits},x=R(0,r.lens,0,19,r.lencode,0,r.work,S),r.lenbits=S.bits,x){e.msg="invalid code lengths set",r.mode=30;break}r.have=0,r.mode=19;case 19:for(;r.have<r.nlen+r.ndist;){for(;g=(E=r.lencode[h&(1<<r.lenbits)-1])>>>16&255,v=65535&E,!((_=E>>>24)<=f);){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}if(v<16)h>>>=_,f-=_,r.lens[r.have++]=v;else{if(16===v){for(z=_+2;f<z;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}if(h>>>=_,f-=_,0===r.have){e.msg="invalid bit length repeat",r.mode=30;break}k=r.lens[r.have-1],c=3+(3&h),h>>>=2,f-=2}else if(17===v){for(z=_+3;f<z;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}f-=_,k=0,c=3+(7&(h>>>=_)),h>>>=3,f-=3}else{for(z=_+7;f<z;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}f-=_,k=0,c=11+(127&(h>>>=_)),h>>>=7,f-=7}if(r.have+c>r.nlen+r.ndist){e.msg="invalid bit length repeat",r.mode=30;break}for(;c--;)r.lens[r.have++]=k}}if(30===r.mode)break;if(0===r.lens[256]){e.msg="invalid code -- missing end-of-block",r.mode=30;break}if(r.lenbits=9,S={bits:r.lenbits},x=R(D,r.lens,0,r.nlen,r.lencode,0,r.work,S),r.lenbits=S.bits,x){e.msg="invalid literal/lengths set",r.mode=30;break}if(r.distbits=6,r.distcode=r.distdyn,S={bits:r.distbits},x=R(F,r.lens,r.nlen,r.ndist,r.distcode,0,r.work,S),r.distbits=S.bits,x){e.msg="invalid distances set",r.mode=30;break}if(r.mode=20,6===t)break e;case 20:r.mode=21;case 21:if(6<=o&&258<=u){e.next_out=a,e.avail_out=u,e.next_in=s,e.avail_in=o,r.hold=h,r.bits=f,T(e,d),a=e.next_out,i=e.output,u=e.avail_out,s=e.next_in,n=e.input,o=e.avail_in,h=r.hold,f=r.bits,12===r.mode&&(r.back=-1);break}for(r.back=0;g=(E=r.lencode[h&(1<<r.lenbits)-1])>>>16&255,v=65535&E,!((_=E>>>24)<=f);){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}if(g&&0==(240&g)){for(b=_,w=g,y=v;g=(E=r.lencode[y+((h&(1<<b+w)-1)>>b)])>>>16&255,v=65535&E,!(b+(_=E>>>24)<=f);){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}h>>>=b,f-=b,r.back+=b}if(h>>>=_,f-=_,r.back+=_,r.length=v,0===g){r.mode=26;break}if(32&g){r.back=-1,r.mode=12;break}if(64&g){e.msg="invalid literal/length code",r.mode=30;break}r.extra=15&g,r.mode=22;case 22:if(r.extra){for(z=r.extra;f<z;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}r.length+=h&(1<<r.extra)-1,h>>>=r.extra,f-=r.extra,r.back+=r.extra}r.was=r.length,r.mode=23;case 23:for(;g=(E=r.distcode[h&(1<<r.distbits)-1])>>>16&255,v=65535&E,!((_=E>>>24)<=f);){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}if(0==(240&g)){for(b=_,w=g,y=v;g=(E=r.distcode[y+((h&(1<<b+w)-1)>>b)])>>>16&255,v=65535&E,!(b+(_=E>>>24)<=f);){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}h>>>=b,f-=b,r.back+=b}if(h>>>=_,f-=_,r.back+=_,64&g){e.msg="invalid distance code",r.mode=30;break}r.offset=v,r.extra=15&g,r.mode=24;case 24:if(r.extra){for(z=r.extra;f<z;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}r.offset+=h&(1<<r.extra)-1,h>>>=r.extra,f-=r.extra,r.back+=r.extra}if(r.offset>r.dmax){e.msg="invalid distance too far back",r.mode=30;break}r.mode=25;case 25:if(0===u)break e;if(c=d-u,r.offset>c){if((c=r.offset-c)>r.whave&&r.sane){e.msg="invalid distance too far back",r.mode=30;break}p=c>r.wnext?(c-=r.wnext,r.wsize-c):r.wnext-c,c>r.length&&(c=r.length),m=r.window}else m=i,p=a-r.offset,c=r.length;for(u<c&&(c=u),u-=c,r.length-=c;i[a++]=m[p++],--c;);0===r.length&&(r.mode=21);break;case 26:if(0===u)break e;i[a++]=r.length,u--,r.mode=21;break;case 27:if(r.wrap){for(;f<32;){if(0===o)break e;o--,h|=n[s++]<<f,f+=8}if(d-=u,e.total_out+=d,r.total+=d,d&&(e.adler=r.check=r.flags?B(r.check,i,d,a-d):O(r.check,i,d,a-d)),d=u,(r.flags?h:L(h))!==r.check){e.msg="incorrect data check",r.mode=30;break}f=h=0}r.mode=28;case 28:if(r.wrap&&r.flags){for(;f<32;){if(0===o)break e;o--,h+=n[s++]<<f,f+=8}if(h!==(4294967295&r.total)){e.msg="incorrect length check",r.mode=30;break}f=h=0}r.mode=29;case 29:x=1;break e;case 30:x=-3;break e;case 31:return-4;case 32:default:return U}return e.next_out=a,e.avail_out=u,e.next_in=s,e.avail_in=o,r.hold=h,r.bits=f,(r.wsize||d!==e.avail_out&&r.mode<30&&(r.mode<27||4!==t))&&Z(e,e.output,e.next_out,d-e.avail_out)?(r.mode=31,-4):(l-=e.avail_in,d-=e.avail_out,e.total_in+=l,e.total_out+=d,r.total+=d,r.wrap&&d&&(e.adler=r.check=r.flags?B(r.check,i,d,e.next_out-d):O(r.check,i,d,e.next_out-d)),e.data_type=r.bits+(r.last?64:0)+(12===r.mode?128:0)+(20===r.mode||15===r.mode?256:0),(0==l&&0===d||4===t)&&x===N&&(x=-5),x)},r.inflateEnd=function(e){if(!e||!e.state)return U;var t=e.state;return t.window&&(t.window=null),e.state=null,N},r.inflateGetHeader=function(e,t){var r;return e&&e.state?0==(2&(r=e.state).wrap)?U:((r.head=t).done=!1,N):U},r.inflateSetDictionary=function(e,t){var r,n=t.length;return e&&e.state?0!==(r=e.state).wrap&&11!==r.mode?U:11===r.mode&&O(1,t,n,0)!==r.check?-3:Z(e,t,n,n)?(r.mode=31,-4):(r.havedict=1,N):U},r.inflateInfo="pako inflate (from Nodeca project)"},{"../utils/common":41,"./adler32":43,"./crc32":45,"./inffast":48,"./inftrees":50}],50:[function(e,t,r){"use strict";var D=e("../utils/common"),F=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],N=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],U=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],P=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];t.exports=function(e,t,r,n,i,s,a,o){var u,h,f,l,d,c,p,m,_,g=o.bits,v=0,b=0,w=0,y=0,k=0,x=0,S=0,z=0,E=0,C=0,A=null,I=0,O=new D.Buf16(16),B=new D.Buf16(16),T=null,R=0;for(v=0;v<=15;v++)O[v]=0;for(b=0;b<n;b++)O[t[r+b]]++;for(k=g,y=15;1<=y&&0===O[y];y--);if(y<k&&(k=y),0===y)return i[s++]=20971520,i[s++]=20971520,o.bits=1,0;for(w=1;w<y&&0===O[w];w++);for(k<w&&(k=w),v=z=1;v<=15;v++)if(z<<=1,(z-=O[v])<0)return-1;if(0<z&&(0===e||1!==y))return-1;for(B[1]=0,v=1;v<15;v++)B[v+1]=B[v]+O[v];for(b=0;b<n;b++)0!==t[r+b]&&(a[B[t[r+b]]++]=b);if(c=0===e?(A=T=a,19):1===e?(A=F,I-=257,T=N,R-=257,256):(A=U,T=P,-1),v=w,d=s,S=b=C=0,f=-1,l=(E=1<<(x=k))-1,1===e&&852<E||2===e&&592<E)return 1;for(;;){for(p=v-S,_=a[b]<c?(m=0,a[b]):a[b]>c?(m=T[R+a[b]],A[I+a[b]]):(m=96,0),u=1<<v-S,w=h=1<<x;i[d+(C>>S)+(h-=u)]=p<<24|m<<16|_|0,0!==h;);for(u=1<<v-1;C&u;)u>>=1;if(0!==u?(C&=u-1,C+=u):C=0,b++,0==--O[v]){if(v===y)break;v=t[r+a[b]]}if(k<v&&(C&l)!==f){for(0===S&&(S=k),d+=w,z=1<<(x=v-S);x+S<y&&!((z-=O[x+S])<=0);)x++,z<<=1;if(E+=1<<x,1===e&&852<E||2===e&&592<E)return 1;i[f=C&l]=k<<24|x<<16|d-s|0}}return 0!==C&&(i[d+C]=v-S<<24|64<<16|0),o.bits=k,0}},{"../utils/common":41}],51:[function(e,t,r){"use strict";t.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},{}],52:[function(e,t,r){"use strict";var o=e("../utils/common");function n(e){for(var t=e.length;0<=--t;)e[t]=0}var _=15,i=16,u=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],h=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],a=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],f=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],l=new Array(576);n(l);var d=new Array(60);n(d);var c=new Array(512);n(c);var p=new Array(256);n(p);var m=new Array(29);n(m);var g,v,b,w=new Array(30);function y(e,t,r,n,i){this.static_tree=e,this.extra_bits=t,this.extra_base=r,this.elems=n,this.max_length=i,this.has_stree=e&&e.length}function s(e,t){this.dyn_tree=e,this.max_code=0,this.stat_desc=t}function k(e){return e<256?c[e]:c[256+(e>>>7)]}function x(e,t){e.pending_buf[e.pending++]=255&t,e.pending_buf[e.pending++]=t>>>8&255}function S(e,t,r){e.bi_valid>i-r?(e.bi_buf|=t<<e.bi_valid&65535,x(e,e.bi_buf),e.bi_buf=t>>i-e.bi_valid,e.bi_valid+=r-i):(e.bi_buf|=t<<e.bi_valid&65535,e.bi_valid+=r)}function z(e,t,r){S(e,r[2*t],r[2*t+1])}function E(e,t){for(var r=0;r|=1&e,e>>>=1,r<<=1,0<--t;);return r>>>1}function C(e,t,r){var n,i,s=new Array(_+1),a=0;for(n=1;n<=_;n++)s[n]=a=a+r[n-1]<<1;for(i=0;i<=t;i++){var o=e[2*i+1];0!==o&&(e[2*i]=E(s[o]++,o))}}function A(e){var t;for(t=0;t<286;t++)e.dyn_ltree[2*t]=0;for(t=0;t<30;t++)e.dyn_dtree[2*t]=0;for(t=0;t<19;t++)e.bl_tree[2*t]=0;e.dyn_ltree[512]=1,e.opt_len=e.static_len=0,e.last_lit=e.matches=0}function I(e){8<e.bi_valid?x(e,e.bi_buf):0<e.bi_valid&&(e.pending_buf[e.pending++]=e.bi_buf),e.bi_buf=0,e.bi_valid=0}function O(e,t,r,n){var i=2*t,s=2*r;return e[i]<e[s]||e[i]===e[s]&&n[t]<=n[r]}function B(e,t,r){for(var n=e.heap[r],i=r<<1;i<=e.heap_len&&(i<e.heap_len&&O(t,e.heap[i+1],e.heap[i],e.depth)&&i++,!O(t,n,e.heap[i],e.depth));)e.heap[r]=e.heap[i],r=i,i<<=1;e.heap[r]=n}function T(e,t,r){var n,i,s,a,o=0;if(0!==e.last_lit)for(;n=e.pending_buf[e.d_buf+2*o]<<8|e.pending_buf[e.d_buf+2*o+1],i=e.pending_buf[e.l_buf+o],o++,0===n?z(e,i,t):(z(e,(s=p[i])+256+1,t),0!==(a=u[s])&&S(e,i-=m[s],a),z(e,s=k(--n),r),0!==(a=h[s])&&S(e,n-=w[s],a)),o<e.last_lit;);z(e,256,t)}function R(e,t){var r,n,i,s=t.dyn_tree,a=t.stat_desc.static_tree,o=t.stat_desc.has_stree,u=t.stat_desc.elems,h=-1;for(e.heap_len=0,e.heap_max=573,r=0;r<u;r++)0!==s[2*r]?(e.heap[++e.heap_len]=h=r,e.depth[r]=0):s[2*r+1]=0;for(;e.heap_len<2;)s[2*(i=e.heap[++e.heap_len]=h<2?++h:0)]=1,e.depth[i]=0,e.opt_len--,o&&(e.static_len-=a[2*i+1]);for(t.max_code=h,r=e.heap_len>>1;1<=r;r--)B(e,s,r);for(i=u;r=e.heap[1],e.heap[1]=e.heap[e.heap_len--],B(e,s,1),n=e.heap[1],e.heap[--e.heap_max]=r,e.heap[--e.heap_max]=n,s[2*i]=s[2*r]+s[2*n],e.depth[i]=(e.depth[r]>=e.depth[n]?e.depth[r]:e.depth[n])+1,s[2*r+1]=s[2*n+1]=i,e.heap[1]=i++,B(e,s,1),2<=e.heap_len;);e.heap[--e.heap_max]=e.heap[1],function(e,t){var r,n,i,s,a,o,u=t.dyn_tree,h=t.max_code,f=t.stat_desc.static_tree,l=t.stat_desc.has_stree,d=t.stat_desc.extra_bits,c=t.stat_desc.extra_base,p=t.stat_desc.max_length,m=0;for(s=0;s<=_;s++)e.bl_count[s]=0;for(u[2*e.heap[e.heap_max]+1]=0,r=e.heap_max+1;r<573;r++)p<(s=u[2*u[2*(n=e.heap[r])+1]+1]+1)&&(s=p,m++),u[2*n+1]=s,h<n||(e.bl_count[s]++,a=0,c<=n&&(a=d[n-c]),o=u[2*n],e.opt_len+=o*(s+a),l&&(e.static_len+=o*(f[2*n+1]+a)));if(0!==m){do{for(s=p-1;0===e.bl_count[s];)s--;e.bl_count[s]--,e.bl_count[s+1]+=2,e.bl_count[p]--,m-=2}while(0<m);for(s=p;0!==s;s--)for(n=e.bl_count[s];0!==n;)h<(i=e.heap[--r])||(u[2*i+1]!==s&&(e.opt_len+=(s-u[2*i+1])*u[2*i],u[2*i+1]=s),n--)}}(e,t),C(s,h,e.bl_count)}function D(e,t,r){var n,i,s=-1,a=t[1],o=0,u=7,h=4;for(0===a&&(u=138,h=3),t[2*(r+1)+1]=65535,n=0;n<=r;n++)i=a,a=t[2*(n+1)+1],++o<u&&i===a||(o<h?e.bl_tree[2*i]+=o:0!==i?(i!==s&&e.bl_tree[2*i]++,e.bl_tree[32]++):o<=10?e.bl_tree[34]++:e.bl_tree[36]++,s=i,h=(o=0)===a?(u=138,3):i===a?(u=6,3):(u=7,4))}function F(e,t,r){var n,i,s=-1,a=t[1],o=0,u=7,h=4;for(0===a&&(u=138,h=3),n=0;n<=r;n++)if(i=a,a=t[2*(n+1)+1],!(++o<u&&i===a)){if(o<h)for(;z(e,i,e.bl_tree),0!=--o;);else 0!==i?(i!==s&&(z(e,i,e.bl_tree),o--),z(e,16,e.bl_tree),S(e,o-3,2)):o<=10?(z(e,17,e.bl_tree),S(e,o-3,3)):(z(e,18,e.bl_tree),S(e,o-11,7));s=i,h=(o=0)===a?(u=138,3):i===a?(u=6,3):(u=7,4)}}n(w);var N=!1;function U(e,t,r,n){var i,s,a;S(e,0+(n?1:0),3),s=t,a=r,I(i=e),x(i,a),x(i,~a),o.arraySet(i.pending_buf,i.window,s,a,i.pending),i.pending+=a}r._tr_init=function(e){N||(function(){var e,t,r,n,i,s=new Array(_+1);for(n=r=0;n<28;n++)for(m[n]=r,e=0;e<1<<u[n];e++)p[r++]=n;for(p[r-1]=n,n=i=0;n<16;n++)for(w[n]=i,e=0;e<1<<h[n];e++)c[i++]=n;for(i>>=7;n<30;n++)for(w[n]=i<<7,e=0;e<1<<h[n]-7;e++)c[256+i++]=n;for(t=0;t<=_;t++)s[t]=0;for(e=0;e<=143;)l[2*e+1]=8,e++,s[8]++;for(;e<=255;)l[2*e+1]=9,e++,s[9]++;for(;e<=279;)l[2*e+1]=7,e++,s[7]++;for(;e<=287;)l[2*e+1]=8,e++,s[8]++;for(C(l,287,s),e=0;e<30;e++)d[2*e+1]=5,d[2*e]=E(e,5);g=new y(l,u,257,286,_),v=new y(d,h,0,30,_),b=new y(new Array(0),a,0,19,7)}(),N=!0),e.l_desc=new s(e.dyn_ltree,g),e.d_desc=new s(e.dyn_dtree,v),e.bl_desc=new s(e.bl_tree,b),e.bi_buf=0,e.bi_valid=0,A(e)},r._tr_stored_block=U,r._tr_flush_block=function(e,t,r,n){var i,s,a=0;0<e.level?(2===e.strm.data_type&&(e.strm.data_type=function(e){var t,r=4093624447;for(t=0;t<=31;t++,r>>>=1)if(1&r&&0!==e.dyn_ltree[2*t])return 0;if(0!==e.dyn_ltree[18]||0!==e.dyn_ltree[20]||0!==e.dyn_ltree[26])return 1;for(t=32;t<256;t++)if(0!==e.dyn_ltree[2*t])return 1;return 0}(e)),R(e,e.l_desc),R(e,e.d_desc),a=function(e){var t;for(D(e,e.dyn_ltree,e.l_desc.max_code),D(e,e.dyn_dtree,e.d_desc.max_code),R(e,e.bl_desc),t=18;3<=t&&0===e.bl_tree[2*f[t]+1];t--);return e.opt_len+=3*(t+1)+5+5+4,t}(e),i=e.opt_len+3+7>>>3,(s=e.static_len+3+7>>>3)<=i&&(i=s)):i=s=r+5,r+4<=i&&-1!==t?U(e,t,r,n):4===e.strategy||s===i?(S(e,2+(n?1:0),3),T(e,l,d)):(S(e,4+(n?1:0),3),function(e,t,r,n){var i;for(S(e,t-257,5),S(e,r-1,5),S(e,n-4,4),i=0;i<n;i++)S(e,e.bl_tree[2*f[i]+1],3);F(e,e.dyn_ltree,t-1),F(e,e.dyn_dtree,r-1)}(e,e.l_desc.max_code+1,e.d_desc.max_code+1,a+1),T(e,e.dyn_ltree,e.dyn_dtree)),A(e),n&&I(e)},r._tr_tally=function(e,t,r){return e.pending_buf[e.d_buf+2*e.last_lit]=t>>>8&255,e.pending_buf[e.d_buf+2*e.last_lit+1]=255&t,e.pending_buf[e.l_buf+e.last_lit]=255&r,e.last_lit++,0===t?e.dyn_ltree[2*r]++:(e.matches++,t--,e.dyn_ltree[2*(p[r]+256+1)]++,e.dyn_dtree[2*k(t)]++),e.last_lit===e.lit_bufsize-1},r._tr_align=function(e){var t;S(e,2,3),z(e,256,l),16===(t=e).bi_valid?(x(t,t.bi_buf),t.bi_buf=0,t.bi_valid=0):8<=t.bi_valid&&(t.pending_buf[t.pending++]=255&t.bi_buf,t.bi_buf>>=8,t.bi_valid-=8)}},{"../utils/common":41}],53:[function(e,t,r){"use strict";t.exports=function(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0}},{}],54:[function(e,t,r){"use strict";t.exports="function"==typeof setImmediate?setImmediate:function(){var e=[].slice.apply(arguments);e.splice(1,0,0),setTimeout.apply(null,e)}},{}]},{},[10])(10)})}).call(this,void 0!==r?r:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}]},{},[1])(1)})}).call(this,void 0!==r?r:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}]},{},[1])(1)})}).call(this,void 0!==r?r:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}]},{},[1])(1)})}).call(this,void 0!==r?r:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}]},{},[1])(1)})}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}]},{},[1])(1)});
\ No newline at end of file
diff --git a/modules/save.js b/modules/save.js
index 1a2e910d..07f24b83 100644
--- a/modules/save.js
+++ b/modules/save.js
@@ -70,13 +70,78 @@ async function saveJPEG() {
   TIME && console.timeEnd("saveJPEG");
 }
 
+// download map as png tiles
+async function saveTiles() {
+  return new Promise(async (resolve, reject) => {
+    // download schema
+    const urlSchema = await getMapURL("tiles", "schema");
+    const zip = new JSZip();
+
+    const canvas = document.createElement("canvas");
+    const ctx = canvas.getContext("2d");
+    canvas.width = graphWidth;
+    canvas.height = graphHeight;
+
+    const imgSchema = new Image();
+    imgSchema.src = urlSchema;
+    imgSchema.onload = function () {
+      ctx.drawImage(imgSchema, 0, 0, canvas.width, canvas.height);
+      canvas.toBlob(blob => zip.file(`fmg_tile_schema.png`, blob));
+    };
+
+    // download tiles
+    const url = await getMapURL("tiles");
+    const tilesX = +document.getElementById("tileColsInput").value;
+    const tilesY = +document.getElementById("tileRowsInput").value;
+    const scale = +document.getElementById("tileScaleInput").value;
+
+    const tileW = (graphWidth / tilesX) | 0;
+    const tileH = (graphHeight / tilesY) | 0;
+    const tolesTotal = tilesX * tilesY;
+
+    canvas.width = graphWidth * scale;
+    canvas.height = graphHeight * scale;
+
+    let loaded = 0;
+    const img = new Image();
+    img.src = url;
+    img.onload = function () {
+      for (let y = 0, i = 0; y < graphHeight; y += tileH) {
+        for (let x = 0; x < graphWidth; x += tileW, i++) {
+          ctx.drawImage(img, x, y, tileW, tileH, 0, 0, canvas.width, canvas.height);
+          const name = `fmg_tile_${i}.png`;
+          canvas.toBlob(blob => {
+            zip.file(name, blob);
+            loaded += 1;
+            if (loaded === tolesTotal) return downloadZip();
+          });
+        }
+      }
+    };
+
+    function downloadZip() {
+      const name = `${getFileName()}.zip`;
+      zip.generateAsync({type: "blob"}).then(blob => {
+        const link = document.createElement("a");
+        link.href = URL.createObjectURL(blob);
+        link.download = name;
+        link.click();
+        link.remove();
+
+        setTimeout(() => URL.revokeObjectURL(link.href), 5000);
+        resolve(true);
+      });
+    }
+  });
+}
+
 // parse map svg to object url
 async function getMapURL(type, subtype) {
   const cloneEl = document.getElementById("map").cloneNode(true); // clone svg
   cloneEl.id = "fantasyMap";
   document.body.appendChild(cloneEl);
   const clone = d3.select(cloneEl);
-  clone.select("#debug").remove();
+  if (subtype !== "schema") clone.select("#debug").remove();
 
   const cloneDefs = cloneEl.getElementsByTagName("defs")[0];
   const svgDefs = document.getElementById("defElements");
@@ -93,6 +158,7 @@ async function getMapURL(type, subtype) {
     clone.attr("width", graphWidth).attr("height", graphHeight);
     clone.select("#viewbox").attr("transform", null);
   }
+
   if (type === "svg") removeUnusedElements(clone);
   if (customization && type === "mesh") updateMeshCells(clone);
   inlineStyle(clone);
diff --git a/modules/ui/options.js b/modules/ui/options.js
index 48efa169..dcfdd58b 100644
--- a/modules/ui/options.js
+++ b/modules/ui/options.js
@@ -638,7 +638,7 @@ function showSavePane() {
   $("#saveMapData").dialog({
     title: "Save map",
     resizable: false,
-    width: "27em",
+    width: "30em",
     position: {my: "center", at: "center", of: "svg"},
     buttons: {
       Close: function () {
@@ -719,6 +719,70 @@ document.getElementById("mapToLoad").addEventListener("change", function () {
   uploadMap(fileToLoad);
 });
 
+function openSaveTiles() {
+  closeDialogs();
+  updateTilesOptions();
+  const status = document.getElementById("tileStatus");
+  status.innerHTML = "";
+
+  $("#saveTilesScreen").dialog({
+    resizable: false,
+    title: "Download tiles",
+    width: "23em",
+    buttons: {
+      Download: function () {
+        status.innerHTML = "Preparing for download...";
+        setTimeout(() => (status.innerHTML = "Downloading. It may take some time."), 1000);
+        const loading = setInterval(() => (status.innerHTML += "."), 1000);
+        saveTiles().then(() => {
+          clearInterval(loading);
+          status.innerHTML = `Done. Check file in "Downloads" (crtl + J)`;
+          setTimeout(() => (status.innerHTML = ""), 8000);
+        });
+      },
+      Cancel: function () {
+        $(this).dialog("close");
+      }
+    },
+    close: () => debug.selectAll("*").remove()
+  });
+}
+
+document
+  .getElementById("saveTilesScreen")
+  .querySelectorAll("input")
+  .forEach(el => el.addEventListener("input", updateTilesOptions));
+
+function updateTilesOptions() {
+  const tileSize = document.getElementById("tileSize");
+  const tilesX = +document.getElementById("tileColsInput").value;
+  const tilesY = +document.getElementById("tileRowsInput").value;
+
+  // calculate size
+  const scale = +document.getElementById("tileScaleInput").value;
+  const sizeX = graphWidth * scale * tilesX;
+  const sizeY = graphHeight * scale * tilesY;
+  const totalSize = sizeX * sizeY;
+
+  tileSize.innerHTML = `${sizeX} x ${sizeY} px`;
+  tileSize.style.color = totalSize > 1e9 ? "#053305" : totalSize > 1e7 ? "#9e6409" : "#1a941a";
+
+  // draw tiles
+  const rects = [];
+  const labels = [];
+  const tileW = (graphWidth / tilesX) | 0;
+  const tileH = (graphHeight / tilesY) | 0;
+  for (let y = 0, i = 0; y < graphHeight; y += tileH) {
+    for (let x = 0; x < graphWidth; x += tileW, i++) {
+      rects.push(`<rect x=${x} y=${y} width=${tileW} height=${tileH} />`);
+      labels.push(`<text x=${x + tileW / 2} y=${y + tileH / 2}>${i}</text>`);
+    }
+  }
+  const rectsG = "<g fill='none' stroke='#000'>" + rects.join("") + "</g>";
+  const labelsG = "<g fill='#000' stroke='none' text-anchor='middle' dominant-baseline='central' font-size='24px'>" + labels.join("") + "</g>";
+  debug.html(rectsG + labelsG);
+}
+
 // View mode
 viewMode.addEventListener("click", changeViewMode);
 function changeViewMode(event) {