# Markdown Viewer

> Render Markdown files as styled HTML with themes, syntax highlighting, TOC, Mermaid and KaTeX.

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

## Overview

- **ID:** `empiric-markdown-viewer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Burlac MIhail
- **Category:** web-development,appearance,language-support
- **Daily users:** 52
- **Weekly downloads:** 17
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 0.4.2
- **Last updated:** 2026-06-04
- **First published:** 2026-05-26
- **Size:** 1.41 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/empiric-markdown-viewer/)
- **Website:** [https://github.com/mburlac/empiric-apps-markdown-viewer-chrome/issues](https://github.com/mburlac/empiric-apps-markdown-viewer-chrome/issues)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/empiric-markdown-viewer/privacy/](https://addons.mozilla.org/firefox/addon/empiric-markdown-viewer/privacy/)

## Description

Markdown Viewer turns any .md / .markdown file into a beautifully styled page - locally, in your browser, with zero data collection.

Features
  - 5 themes: Auto, GitHub Light, GitHub Dark, Sepia, Dracula
  - Syntax highlighting for ~35 languages via highlight.js
  - Table of contents sidebar with scroll tracking
  - Mermaid diagrams (flowchart, sequence, class, state, ER, gantt, pie, journey, git graph, mindmap, quadrant)
  - KaTeX math rendering (inline $…$ and display $$…$$)
  - Copy-code button on every code block
  - Auto-reload when the source .md file changes
  - Adjustable reading width and font size
  - Toggle rendered / raw with one click

Privacy
All rendering happens locally. No data is sent anywhere. No analytics, no trackers.

File access on Firefox
To render local .md files (file://), open about:addons → Markdown Viewer → Permissions → enable "Access your data for file URLs".

Built by Empirica Apps - <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/cd09b8ac4901d762a2d50ba7e7aadf7adb6271462581ff609b14d937c7e1da59/https%3A//empiricapps.com" rel="nofollow">https://empiricapps.com</a>

## Rankings

- #16,052 — Overall
- #76 — viewer

## Permissions and access

### Permissions

- `storage`
- `activeTab`

### Host permissions

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

### Content script matches

- `*`
- ``

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions 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/empiric-markdown-viewer)