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<htmllang="en"><head><metacharset="UTF-8"><metaname="viewport" content="width=device-width, initial-scale=1"><title>🌐HelpViewer</title><metaname="description" content="is a modern, portable and fast tool for viewing Markdown and HTML documentation directly from ZIP archives or from a local directory where they have been unpack"><linkrel="icon" type="image/png" href="favicon.png"><metaproperty="og:title" content="🌐HelpViewer"><metaproperty="og:description" content="is a modern, portable and fast tool for viewing Markdown and HTML documentation directly from ZIP archives or from a local directory where they have been unpack"><metaproperty="og:type" content="website"><metaproperty="og:image" content="favicon.png"><metaname="robots" content="index,follow"><linkrel="stylesheet" href="src/i-formsupport-css.css" type="text/css"><linkrel="stylesheet" href="src/mainCSS.css" type="text/css"><linkrel="stylesheet" href="src/mainCSSPlus.css" type="text/css"><linkrel="stylesheet" href="src/addition-puiWatermark-toc.css" type="text/css"><linkrel="stylesheet" href="src/overridePlusMinusVars.css" type="text/css"><linkrel="stylesheet" href="src/prism/prism.css.css" type="text/css"><linkrel="stylesheet" href="src/prism/override.css.css" type="text/css"><linkrel="stylesheet" href="src/TPL-HTML-fixes.css" type="text/css"><linkrel="stylesheet" href="src/custom.css" type="text/css"><metaname="keywords" content="cors, deployment, html, index.html, installation, markdown, offline, viewer"></head><bodyclass="inStandard"><divclass="container" id="container"><divclass="main" id="main"><divclass="header" id="header" role="banner"><h1id="mtitle">🌐HelpViewer</h1><divid="header-toolbar" class="toolbar" role="toolbar"><aid="printBtn" title="Print page" aria-label="Print page" href="javascript:window.print();">🖨️</a><aid="nav-right" title="Next topic" aria-label="Next topic" href="toc.htm">➡</a><aid="downP-TopicTree" title="Table of Contents" aria-label="Table of Contents" href="toc.htm">📖</a><aid="downP-Glossary" title="Glossary" aria-label="Glossary" href="keywordList/index.htm">📇</a><aid="downP-Fulltext" title="Fulltext search" aria-label="Fulltext search" href="fulltextList/index.htm">🔎</a><aid="downP-Home" title="Home" aria-label="Home" href="index.htm">🏡</a></div></div><divclass="content" id="content" role="main" aria-live="polite"><p>is a modern, portable and fast tool for viewing Markdown and HTML documentation directly from ZIP archives or from a local directory where they have been unpacked. No server or backend required - just open the <strong>index.html</strong> in your browser. MIT licensed.</p><h2id="h-2-0">How it works<ahref="#h-2-0" class="anchor-link"> #</a></h2><ol><li>Download the deployment package from <spanid="linkhereI"><ahref="https://github.com/HelpViewer/HelpViewer/releases/download/20260205/package.zip" title="https://github.com/HelpViewer/HelpViewer/releases/download/20260205/package.zip">package.zip</a></span> and unzip it.</li><li>For correct display, launch the browser without <ahref="corsPolicy.htm#h-1-6" title="Browser possibly blocking local file access (file://) due to CORS policy restrictions" data-param="corsPolicy.md">CORS restrictions</a>. Otherwise, you will see a page with message and have to manually select help and data files.</li><li>Open the <strong>index.html</strong> file in your browser.</li><li>Set the URL parameter <strong>?d=X</strong>, where <strong>X</strong> is the path to your ZIP file or you can define path ending with <strong>/</strong> if you want to read a directory.<br>If you skip this step, <strong>./hlp/Help-{current language}.zip</strong> will be used by default.</li><li>You will see e.g. the <ahref="?d=hlp-user/Help-__.zip" title="User quick guide">user documentation</a> directly in HelpViewer, just like you are seeing this web page.</li></ol><script>
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</script><h2id="h-2-1">Used 3rd party products<ahref="#h-2-1" class="anchor-link"> #</a></h2><ul><li><ahref="http://jszip.org/" title="JSZip JavaScript library - ZIP files manipulation">JSZip library</a> (under MIT)</li><li><ahref="https://marked.js.org/" title="Marked JavaScript library - md files to HTML renderer">Marked</a> (under MIT)</li><li><ahref="https://mermaid.js.org/" title="Mermaid library - renderer for diagrams defined by specific textual definitions">Mermaid</a> (under MIT)</li><li><ahref="https://prismjs.com/" title="Prism - syntax highlighting">Prism</a> (under MIT)</li></ul><table><thead><tr><th>Help file</th><th>Version</th></tr></thead><tbody><tr><td>HelpViewer/helpHello</td><td>20260205</td></tr><tr><td>HelpViewer/HelpViewer</td><td>20260205</td></tr><tr><td>Source</td><td>hlp/Help-en.zip</td></tr><tr><td>Date</td><td>2026-02-05 19:24:58</td></tr></tbody></table><p></p></div></div></div></body></html>
<htmllang="en"><head><metacharset="UTF-8"><metaname="viewport" content="width=device-width, initial-scale=1"><title></title><metaname="description" content="This guide helps you see your own repository inside HelpViewer. It's not a migration - some features are limited or might not work just yet. But it might just b"><linkrel="icon" type="image/png" href="favicon.png"><metaproperty="og:title" content=""><metaproperty="og:description" content="This guide helps you see your own repository inside HelpViewer. It's not a migration - some features are limited or might not work just yet. But it might just b"><metaproperty="og:type" content="website"><metaproperty="og:image" content="favicon.png"><metaname="robots" content="index,follow"><linkrel="stylesheet" href="src/i-formsupport-css.css" type="text/css"><linkrel="stylesheet" href="src/mainCSS.css" type="text/css"><linkrel="stylesheet" href="src/mainCSSPlus.css" type="text/css"><linkrel="stylesheet" href="src/addition-puiWatermark-toc.css" type="text/css"><linkrel="stylesheet" href="src/overridePlusMinusVars.css" type="text/css"><linkrel="stylesheet" href="src/prism/prism.css.css" type="text/css"><linkrel="stylesheet" href="src/prism/override.css.css" type="text/css"><linkrel="stylesheet" href="src/TPL-HTML-fixes.css" type="text/css"><linkrel="stylesheet" href="src/custom.css" type="text/css"></head><bodyclass="inStandard"><divclass="container" id="container"><divclass="main" id="main"><divclass="header" id="header" role="banner"><h1id="mtitle"></h1><divid="header-toolbar" class="toolbar" role="toolbar"><aid="printBtn" title="Print page" aria-label="Print page" href="javascript:window.print();">🖨️</a><aid="nav-left" title="Previous topic" aria-label="Previous topic" href="docker.htm">⬅</a><aid="nav-right" title="Next topic" aria-label="Next topic" href="corsPolicy.htm">➡</a><aid="downP-TopicTree" title="Table of Contents" aria-label="Table of Contents" href="toc.htm">📖</a><aid="downP-Glossary" title="Glossary" aria-label="Glossary" href="keywordList/index.htm">📇</a><aid="downP-Fulltext" title="Fulltext search" aria-label="Fulltext search" href="fulltextList/index.htm">🔎</a><aid="downP-Home" title="Home" aria-label="Home" href="index.htm">🏡</a></div></div><divclass="content" id="content" role="main" aria-live="polite"><pid="_viewRepo-par1">This guide helps you see your own repository inside HelpViewer. It's not a migration - some features are limited or might not work just yet. But it might just be the first step toward choosing a tool that fits you. Just enter some information below and click the generated link to get started.</p><pid="_viewRepo-par2">🛈 This preview uses public content from GitHub.<br>If your repository is private, the preview will not work.<br>Everything runs in your browser only.</p><p> </p><divid="form"><divclass="form-row"><labelfor="_viewRepo-org" id="_viewRepo-org-label">Organization/User</label><inputtype="text" id="_viewRepo-org"></div><divclass="form-row"><labelfor="_viewRepo-repo" id="_viewRepo-repo-label">Repository</label><inputtype="text" id="_viewRepo-repo"></div><divclass="form-row"><labelfor="_viewRepo-branch" id="_viewRepo-branch-label">Branch/Tag</label><inputtype="text" id="_viewRepo-branch" value="master"></div><divclass="form-row"><labelfor="_viewRepo-langs" id="_viewRepo-langs-label">Language subdirectories</label><inputtype="checkbox" id="_viewRepo-langs" checked=""></div><divclass="form-row"><labelfor="_viewRepo-zip" id="_viewRepo-zip-label">Browse ZIP release</label><inputtype="checkbox" id="_viewRepo-zip"></div></div><divclass="form-row"><labelid="_viewRepo-link">Link</label><spanid="previewLink"></span></div><script>
<htmllang="en"><head><metacharset="UTF-8"><metaname="viewport" content="width=device-width, initial-scale=1"><title>CORS policy</title><metaname="description" content="Do you see the page with “⚠ Do you see this message only?”? Then the browser is not loading the data from the ZIP help file.This may be caused by your browser b"><linkrel="icon" type="image/png" href="favicon.png"><metaproperty="og:title" content="CORS policy"><metaproperty="og:description" content="Do you see the page with “⚠ Do you see this message only?”? Then the browser is not loading the data from the ZIP help file.This may be caused by your browser b"><metaproperty="og:type" content="website"><metaproperty="og:image" content="favicon.png"><metaname="robots" content="index,follow"><linkrel="stylesheet" href="src/i-formsupport-css.css" type="text/css"><linkrel="stylesheet" href="src/mainCSS.css" type="text/css"><linkrel="stylesheet" href="src/mainCSSPlus.css" type="text/css"><linkrel="stylesheet" href="src/addition-puiWatermark-toc.css" type="text/css"><linkrel="stylesheet" href="src/overridePlusMinusVars.css" type="text/css"><linkrel="stylesheet" href="src/prism/prism.css.css" type="text/css"><linkrel="stylesheet" href="src/prism/override.css.css" type="text/css"><linkrel="stylesheet" href="src/TPL-HTML-fixes.css" type="text/css"><linkrel="stylesheet" href="src/custom.css" type="text/css"><metaname="keywords" content="cors, deployment, restrictions, troubleshooting"></head><bodyclass="inStandard"><divclass="container" id="container"><divclass="main" id="main"><divclass="header" id="header" role="banner"><h1id="mtitle">CORS policy</h1><divid="header-toolbar" class="toolbar" role="toolbar"><aid="printBtn" title="Print page" aria-label="Print page" href="javascript:window.print();">🖨️</a><aid="nav-left" title="Previous topic" aria-label="Previous topic" href="_viewRepo.htm">⬅</a><aid="nav-right" title="Next topic" aria-label="Next topic" href="keywordList/index.htm">➡</a><aid="downP-TopicTree" title="Table of Contents" aria-label="Table of Contents" href="toc.htm">📖</a><aid="downP-Glossary" title="Glossary" aria-label="Glossary" href="keywordList/index.htm">📇</a><aid="downP-Fulltext" title="Fulltext search" aria-label="Fulltext search" href="fulltextList/index.htm">🔎</a><aid="downP-Home" title="Home" aria-label="Home" href="index.htm">🏡</a></div></div><divclass="content" id="content" role="main" aria-live="polite"><p>Do you see the page with “⚠ Do you see this message only?”? Then the browser is not loading the data from the ZIP help file.<br>This may be caused by your browser blocking local file access (file://) due to CORS policy restrictions. </p><p>You have 2 options on how to proceed:</p><ol><li>In the <strong>data.zip</strong> and <strong>Help-(language).zip</strong> fields, select the necessary files and click <strong>Submit</strong>.</li><li>You need to run your browser in mode with bypass CORS policy:</li></ol><ul><li><p>Chrome:</p><blockquote><p>Run in CLI:<br>chrome.exe --disable-site-isolation-trials --disable-web-security --user-data-dir="C:\temp"</p></blockquote></li><li><p>Edge:</p><blockquote><p>Run in CLI:<br>msedge --disable-web-security --user-data-dir="C:\temp"</p></blockquote></li></ul><script>
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