# Markdown Viewer

> Markdown to perfect Word in one click — Mermaid, Vega, drawio, Canvas, Infographic, Graphviz, LaTeX (editable), code highlighting, local processing

Canonical page: [https://chrome-stats.com/d/markdown-viewer-extension](https://chrome-stats.com/d/markdown-viewer-extension)

## Overview

- **ID:** `markdown-viewer-extension`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** xicilion
- **Category:** feeds-news-blogging,social-communication
- **Daily users:** 659
- **Weekly downloads:** 70
- **Rating:** 3.50 / 5 (4 ratings)
- **Version:** 5.3.0
- **Last updated:** 2026-09-13
- **First published:** 2026-01-03
- **Size:** 12 MB
- **Data as of:** 2026-09-14
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/markdown-viewer-extension/)
- **Website:** [https://github.com/xicilion/markdown-viewer-extension](https://github.com/xicilion/markdown-viewer-extension)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/markdown-viewer-extension/privacy/](https://addons.mozilla.org/firefox/addon/markdown-viewer-extension/privacy/)

## Description

Markdown Viewer

<strong>Markdown to perfect Word in one click — Mermaid, Vega, drawio, Canvas, Infographic, Graphviz, LaTeX (editable), code highlighting, local processing</strong>

<em>Completely Free · 29 Professional Themes · 28 Languages Support</em>

 🚀 <strong>Install Now (Choose Your Platform):</strong>
<ul><li><strong>Chrome / Chromium:</strong> <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/f7f81e3650c39f025b2447dac6bd48a01195f689997e6bc1a94393aa5a6eddb2/https%3A//chromewebstore.google.com/detail/markdown-viewer/jekhhoflgcfoikceikgeenibinpojaoi" rel="nofollow">https://chromewebstore.google.com/detail/markdown-viewer/jekhhoflgcfoikceikgeenibinpojaoi</a></li><li><strong>Firefox:</strong> <a href="https://addons.mozilla.org/firefox/addon/markdown-viewer-extension/" rel="nofollow">https://addons.mozilla.org/firefox/addon/markdown-viewer-extension/</a></li><li><strong>VS Code:</strong> <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/b6560cf320c1410082093e3f27c82378df47e44ef75bc65cfe592adc97a86b1a/https%3A//marketplace.visualstudio.com/items%3FitemName=xicilion.markdown-viewer-extension" rel="nofollow">https://marketplace.visualstudio.com/items?itemName=xicilion.markdown-viewer-extension</a> · <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/b0e639dd120ea51826116cc72a0d641456bdd130514e3b54fedc622aa61d3285/https%3A//open-vsx.org/extension/xicilion/markdown-viewer-extension" rel="nofollow">Open VSX</a></li><li><strong>Mobile (iOS/Android):</strong> See <a href="/" rel="nofollow">Mobile App</a></li></ul>

You love writing in Markdown — clean, efficient, version control friendly.
But eventually, you always need a Word document.

<strong>The old nightmare:</strong>

😫 Manual screenshot flowcharts · Copy-paste formulas become messy · Format code by hand · Adjust tables cell by cell · Spend another 30 minutes tweaking fonts, spacing, and colors after export

<strong>One document: 1 hour writing, 2 hours formatting.</strong>

<strong>Now it takes just 1 second.</strong>

Click to download and get a perfect Word document:
- ✅ Mermaid diagrams → High-resolution images
- ✅ Vega/Vega-Lite data charts → High-resolution images
- ✅ drawio diagrams → High-resolution images
- ✅ Canvas diagrams → High-resolution images
- ✅ Infographic charts → High-resolution images
- ✅ Graphviz DOT graphs → High-resolution images
- ✅ LaTeX formulas → Word editable equations
- ✅ Auto syntax highlighting (100+ languages)
- ✅ 29 professional themes with one click
- ✅ Completely free, local processing

<strong>Spend time on writing, not on formatting.</strong>

🌍 Available Platforms

Markdown Viewer is not just a Chrome extension anymore — it's a unified rendering + export engine shipped across multiple platforms.

| Platform | Best for | Docs |
|---|---|---|
| <strong>Chrome Extension</strong> | Reading local/online Markdown in browser + export | <a href="/" rel="nofollow">docs/platforms/chrome.md</a> |
| <strong>Firefox Extension</strong> | Firefox users, same core features | <a href="/" rel="nofollow">docs/platforms/firefox.md</a> |
| <strong>VS Code Extension</strong> | Writing + live preview + export inside editor | <a href="/" rel="nofollow">docs/platforms/vscode.md</a> |
| <strong>Mobile App</strong> | Reading/export on the go (iOS/Android) | <a href="/" rel="nofollow">docs/platforms/mobile.md</a> |

See the full feature matrix: <a href="/" rel="nofollow">docs/platforms/platform-comparison.md</a>

💫 See It in Action

Technical Documentation: 15 Flowcharts, 2 Hours → 5 Minutes

<strong>Before:</strong> <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/0ceb175aa213af648a7b5a6a3128110e351771c47f553f07bce7fa8a2f045f71/http%3A//draw.io" rel="nofollow">draw.io</a> diagram → Export PNG → Insert into Word → Resize → Repeat 15 times = <strong>2 hours</strong>

<strong>Now:</strong> Write Mermaid code → Click download = <strong>5 minutes</strong>

System Architecture

<code>```mermaid
graph TB
    A[User] --&gt; B[Load Balancer]
    B --&gt; C[Server 1]
    B --&gt; D[Server 2]
```
</code>

Need changes? Modify code and re-export. <strong>Save 115 minutes.</strong>

Academic Paper: 50+ Formulas, 3 Hours → 10 Minutes

<strong>Before:</strong> Word equation editor one by one OR paid tool subscription = <strong>3 hours + Paid subscription</strong>

<strong>Now:</strong> Write LaTeX syntax directly → Click download = <strong>10 minutes + Free</strong>

Given mass $m$ and acceleration $a$, according to Newton's second law:

<code>$$
F = ma = m\frac{dv}{dt} = m\frac{d^2x}{dt^2}
$$
</code>

Export as native Word format, fully editable. <strong>Not an image, but a real equation object.</strong>

Team Collaboration: Weekly Reports, 1 Hour → 1 Minute

<strong>Before:</strong> Copy content → Set format → Adjust lists → Add styling → Excel charts + screenshots = <strong>1 hour weekly</strong>

<strong>Now:</strong> Open file → Choose theme → Click download = <strong>1 minute</strong>

Choose "Business" theme, Vega-Lite data charts auto-convert to high-res images, professional look. <strong>Save 59 minutes weekly.</strong>

<strong>Business use cases:</strong>
- 📊 Sales trends (line charts)
- 📈 Market share comparison (bar charts)
- 🎯 KPI achievement (gauges)
- 📉 Cost analysis (stacked charts)

Let data speak, generate professional reports with one click.

🎯 Three Core Features

1. Automatic Diagram Conversion

<strong>Mermaid</strong> · <strong>Vega/Vega-Lite</strong> · <strong>drawio</strong> · <strong>Canvas</strong> · <strong>Infographic</strong> · <strong>Graphviz DOT</strong> · SVG images · Complex HTML tables

<strong>Mermaid:</strong> Flowcharts, sequence diagrams, class diagrams, state diagrams → Technical docs, architecture design
<strong>Vega/Vega-Lite:</strong> Bar charts, line charts, scatter plots, heatmaps → Business reports, data analytics
<strong>drawio:</strong> Architecture diagrams, network topologies, UML diagrams → System design, technical documentation
<strong>Canvas:</strong> Mind maps, knowledge graphs, concept maps → Brainstorming, planning boards
<strong>Infographic:</strong> Statistical charts, infographics, data visualization → Data presentation, visual storytelling
<strong>Graphviz DOT:</strong> Directed/undirected graphs, network topology, state machines → Dependency analysis, complex graphs

<strong>Time comparison:</strong> Complex sequence diagram (10 objects)
- Traditional tools: Draw 30min + Modify 20min + Adjust 10min + Export 5min = <strong>65 minutes</strong>
- Markdown Viewer: Write code 5min + Modify 30sec + Export 1sec = <strong>6 minutes</strong>

<strong>Business scenario:</strong> Quarterly sales report (5 bar charts)
- Excel charting + screenshots: Select data 15min + Format 10min + Screenshot 5min = <strong>30 minutes</strong>
- Vega-Lite: JSON data 2min + One-click export = <strong>3 minutes</strong>

<strong>Precise, professional, reusable.</strong>

2. Perfect Formula Conversion

LaTeX → Word editable equations (not images!)

After export, you can:
- ✅ Continue editing in Word
- ✅ Adjust font size
- ✅ Modify symbols and variables
- ✅ Copy to other documents

<strong>One formula, two approaches:</strong>
- ❌ Word equation editor: Click...click...click...select symbols...adjust positions
- ✅ LaTeX: <code>\int_0^\infty e^{-x^2}dx</code> Done

3. 29 Professional Themes

Different scenarios, different styles, one-click switch:
<ul><li>📊 Business / Technical → Business reports, technical docs</li><li>📚 Academic / Palatino → Academic papers, book typesetting  </li><li>🇨🇳 Heiti / Mixed → Chinese documents</li><li>🎨 Typewriter / Handwritten → Creative content</li></ul>
<strong>WYSIWYG:</strong> Preview looks exactly like exported Word. No guessing, no trial.

<strong>No more manual adjustments:</strong> Font, size, line spacing, paragraph spacing, code background...

⚡ Lightning Fast Experience

Smart Cache: First Time 5s, Second Time 1s

Document with 50 Mermaid diagrams:
- <strong>First open:</strong> Text displays instantly, diagrams render in background, all done within 5s
- <strong>Second open:</strong> Load from cache, instant display (&lt;1s)
- <strong>Text modified:</strong> Still instant (diagrams from cache)
- <strong>Diagram modified:</strong> Only re-render changed diagrams

<strong>10x faster than Word, 100x smaller files.</strong>

Reading Enhancement
<ul><li><strong>Three layouts:</strong> Normal (1000px) / Full screen / Narrow (530px, preview Word effect)</li><li><strong>Flexible zoom:</strong> 50%-400%, shortcuts <code>Ctrl/Cmd +</code> <code>-</code> <code>0</code></li><li><strong>Smart TOC:</strong> Auto-extract headings, sidebar navigation, <code>Ctrl/Cmd + B</code> to toggle</li><li><strong>Position memory:</strong> Auto-save scroll position, continue reading next time</li><li><strong>History:</strong> Track recently opened documents</li></ul>

🚀 Quick Start - 3 Steps

Step 1: Install (30 seconds)

Pick one platform and install:
<ul><li><strong>Chrome / Chromium:</strong> Chrome Web Store link above</li><li><strong>Firefox:</strong> Firefox Add-ons link above</li><li><strong>VS Code:</strong> Extensions panel → search "Markdown Viewer" (or <code>code --install-extension markdown-viewer</code>)</li><li><strong>Mobile:</strong> Open App Store / Google Play and search "Markdown Viewer"</li></ul>
Step 2: Open a Markdown file (1 minute)

<strong>Browser (Chrome / Firefox) — local files:</strong>
<ol><li>Enable local file access in your browser extension settings</li><li>✅ Now you can double-click to open local <code>.md</code> files</li></ol>
<strong>VS Code:</strong> Open any <code>.md</code> file → run the preview command (see <a href="/" rel="nofollow">VS Code Extension</a>)

<strong>Mobile:</strong> Use file picker or open from cloud drive (details in <a href="/" rel="nofollow">Mobile App</a>)

<strong>Not needed if:</strong>
- Only viewing online docs (GitHub, blogs, etc.)
- Using browser's "Open File" function

Quick Start

<strong>Open documents:</strong> Local <code>.md</code> files / supported diagram files (<code>.mermaid</code> <code>.vega</code> <code>.vl</code> <code>.drawio</code> <code>.canvas</code> <code>.infographic</code> <code>.dot</code> <code>.gv</code>) depending on platform

<strong>Export to Word:</strong> Click download button or <code>Ctrl/Cmd + S</code> → See progress → Auto-save

<strong>Switch themes:</strong> Click toolbar → Choose theme → Apply instantly

<strong>Adjust view:</strong> <code>+</code>/<code>-</code> zoom · Layout switch · <code>Ctrl/Cmd + B</code> TOC

🎁 Complete Features

Full Markdown Syntax Support

Headings · Paragraphs · Bold · Italic · Strikethrough · Lists · Task lists · Blockquotes · Code blocks (100+ languages highlighted) · Tables · Links · Images · Mermaid diagrams · Vega / Vega-Lite charts · drawio diagrams · Canvas diagrams · Infographic charts · Graphviz DOT graphs · LaTeX formulas · HTML · GFM extensions

29 Themes

<strong>Classic:</strong> Default · Academic · Business · Manuscript · Newspaper
<strong>Reading:</strong> Palatino · Garamond · Typewriter · Elegant
<strong>Modern:</strong> Technical · Swiss · Minimal
<strong>Creative:</strong> Magazine · Century · Handwritten · Verdana
<strong>Chinese:</strong> Heiti · Mixed · Water
<strong>Playful:</strong> Rainbow · Starry · Candy · Dinosaur · Space · Garden
<strong>Nature:</strong> Forest · Ocean · Coral · Sunset

28 Interface Languages

English · 简体中文 · 繁體中文 · Русский · 日本語 · हिन्दी · 한국어 · Deutsch · Português (Brasil) · Português (Portugal) · Nederlands · Українська · Tiếng Việt · Беларуская · Français · Italiano · Bahasa Indonesia · Español · ไทย · Svenska · Türkçe · Eesti · Bahasa Melayu · Polski · Suomi · Lietuvių · Norsk · Dansk

💎 Competitive Advantages

|  | Manual Screenshots | CLI Tools | Online Services | Desktop Editors | Markdown Viewer |
|---|:---:|:---:|:---:|:---:|:---:|
| <strong>Ease of Use</strong> | Tedious | Setup needed | Upload needed | Install needed | ✅ One-click |
| <strong>Mermaid</strong> | Manual screenshot | Plugin needed | ✅ Supported | ✅ Supported | ✅ Native support |
| <strong>Math Formulas</strong> | Images | Images | Images | Images | ✅ Editable |
| <strong>Privacy</strong> | ✅ Local | ✅ Local | ❌ Cloud upload | ✅ Local | ✅ Local |
| <strong>Themes</strong> | - | - | 3-5 | 5-10 | ✅ 29 |
| <strong>Offline</strong> | ✅ | ✅ | ❌ | ✅ | ✅ |
| <strong>GitHub Direct View</strong> | ❌ | ❌ | ❌ | ❌ | ✅ |
| <strong>Price</strong> | Free | Free | Paid plans | Paid plans | ✅ Free |

<strong>Core advantage: Faster, cheaper, safer, more powerful.</strong>

❓ FAQ

<strong>Q: Can I edit the exported Word document?</strong>
A: Yes. Standard .docx format, math formulas are editable, not images.

<strong>Q: Which diagrams are supported?</strong>
A: All Mermaid diagrams (flowchart, sequence, gantt, class, state, pie, ER, etc.), Vega / Vega-Lite data visualization charts, drawio architecture diagrams, Canvas mind maps, Infographic statistical charts, Graphviz DOT graphs + SVG auto-conversion.

<strong>Q: Is there a file size limit?</strong>
A: No limit. Smart cache, documents with 100+ diagrams open instantly.

<strong>Q: Does it require internet?</strong>
A: No. Completely local processing, works offline.

<strong>Q: Will my documents be uploaded?</strong>
A: Never. All processing happens locally.

<strong>Q: How to switch themes?</strong>
A: Click toolbar icon → Select theme → Apply instantly.

<strong>Q: Can I customize themes?</strong>
A: Currently 29 preset themes, customization coming soon.

<strong>Q: Will large documents lag?</strong>
A: No. Progressive loading + smart cache, text displays instantly, diagrams render in background (first 5s, second 1s).

<strong>Q: Does cache take up much space?</strong>
A: Default max 1000 items, approximately 500 MB, adjustable or clearable in settings.

<strong>Q: Which browsers are supported?</strong>
A: Chrome/Chromium-based browsers (Edge, Brave, Opera, etc.) and Firefox.

<strong>Q: Which Word versions can open the exported file?</strong>
A: Word 2016+ fully supported, Word 2013 also works. Fully compatible with WPS Office.

<strong>Q: Can I export to PDF?</strong>
A: Currently Word only, PDF planned. You can export to Word then save as PDF.

<strong>Q: Which theme suits me?</strong>
A: Business reports → Business · Academic papers → Academic · Technical docs → Technical · Chinese docs → Heiti/Mixed

<strong>Q: What's the difference between Vega and Mermaid?</strong>
A: <strong>Mermaid</strong> is for flowcharts, architecture diagrams, and other schematic diagrams; <strong>Vega/Vega-Lite</strong> is for data visualization like sales charts, financial reports, and other data-driven business charts. They complement each other for different scenarios.

<strong>Q: How to create charts with Vega-Lite?</strong>
A: Use <code>```vega-lite</code> code block in Markdown with JSON format chart specification. See <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/f7cb696c3a8c95da22d607590edeec09e1ad63499ac811e7dcde42e47ca74250/https%3A//vega.github.io/vega-lite/examples/" rel="nofollow">Vega-Lite official examples</a>.

🔒 Privacy Commitment
<ul><li>✅ All processing done locally, never uploaded</li><li>✅ No tracking, no personal data collection</li><li>✅ Open source code, auditable and transparent</li><li>✅ Browser extensions use modern platform standards (Manifest V3)</li></ul>
<strong>Your privacy is 100% protected.</strong>

🆘 Get Help

📖 <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/c4c9163d3c9a29cac016afa634f93b6e91a7ac4f94d7a12a151bde6971fe6a00/https%3A//github.com/markdown-viewer/markdown-viewer-extension" rel="nofollow">Full Documentation</a> · 🐛 <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/06c157e99c4ab68db7a89c21ee2f65f471db9b4538be99459615f897e953d377/https%3A//github.com/markdown-viewer/markdown-viewer-extension/issues" rel="nofollow">Report Issues</a> · 💡 <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/06c157e99c4ab68db7a89c21ee2f65f471db9b4538be99459615f897e953d377/https%3A//github.com/markdown-viewer/markdown-viewer-extension/issues" rel="nofollow">Feature Requests</a> · ⭐ <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/c4c9163d3c9a29cac016afa634f93b6e91a7ac4f94d7a12a151bde6971fe6a00/https%3A//github.com/markdown-viewer/markdown-viewer-extension" rel="nofollow">GitHub Star</a>

🎉 Get Started Now

<strong>Install in 30 seconds, start using immediately:</strong>
<ol><li>Install on Chrome / Firefox / VS Code / Mobile (links above)</li><li>Open a Markdown file</li><li>Preview and click export (or use <code>Ctrl/Cmd + S</code> where supported)</li><li>✅ Get a clean, ready-to-share Word document</li></ol>
<strong>You'll get:</strong> Markdown → Word one-click conversion · Mermaid/Vega/drawio/Canvas/Infographic/Graphviz auto-convert · LaTeX editable formulas · 100+ languages syntax highlighting · 29 themes · Smart cache · Completely free

<strong>Perfect for:</strong> Technical writers · Students/researchers · Product managers · Developers · Anyone using Markdown

🌱 Community Projects
<ul><li>🖥️ <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/5a25098d7b3047c4c4019e8e0935fe310ce9375ff8de9cc2ad422d16a09cf5ca/https%3A//github.com/LarchLiu/md2x" rel="nofollow">md2x</a> - Node.js CLI tool for batch conversion and automation</li></ul>

📜 Open Source License

This project is open source under ISC license. Welcome to Star, report issues, suggest features, and contribute code.

<strong>Project URL:</strong> <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/c4c9163d3c9a29cac016afa634f93b6e91a7ac4f94d7a12a151bde6971fe6a00/https%3A//github.com/markdown-viewer/markdown-viewer-extension" rel="nofollow">https://github.com/markdown-viewer/markdown-viewer-extension</a>

<strong>Stop wasting time on formatting</strong>

<strong>Focus on writing, let Markdown Viewer handle everything else</strong>

🚀 <strong>Install Now:</strong> <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/f7f81e3650c39f025b2447dac6bd48a01195f689997e6bc1a94393aa5a6eddb2/https%3A//chromewebstore.google.com/detail/markdown-viewer/jekhhoflgcfoikceikgeenibinpojaoi" rel="nofollow">https://chromewebstore.google.com/detail/markdown-viewer/jekhhoflgcfoikceikgeenibinpojaoi</a>

<em>Completely Free · Local Processing · Privacy Protected</em>

## Rankings

- #4,288 — Overall
- #235 — Feeds, News & Blogging
- #18 — viewer
- #43 — cmd/ctrl+m
- #54 — process
- #202 — minute

## Permissions and access

### Permissions

- `storage`
- `unlimitedStorage`
- `tabs`
- `activeTab`
- `scripting`
- `webRequest`
- `webRequestBlocking`
- `menus`

### Host permissions

- `file:///*`
- `https://*/*`
- `http://*/*`

### Content script matches

- ``
- `*`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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---

Source: [Chrome-Stats](https://chrome-stats.com/d/markdown-viewer-extension)
