# Markdown Viewer

> Automatically renders .md files in Firefox as readable HTML with table of contents, metadata, author cards, and task list support.

Canonical page: [https://chrome-stats.com/d/mdviewer](https://chrome-stats.com/d/mdviewer)

## Overview

- **ID:** `mdviewer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Henry van Megen
- **Category:** web-development
- **Daily users:** 34
- **Weekly downloads:** 11
- **Version:** 0.8.0
- **Last updated:** 2026-03-09
- **First published:** 2026-03-04
- **Size:** 45 KB
- **Data as of:** 2026-09-14
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/mdviewer/)

## Description

Markdown Viewer turns Markdown files opened in Firefox (URLs ending in .md) into a clean, readable document page.

Features:
- Automatic rendering of .md files into HTML
- Author parsing with rotating author card support
- Optional avatar lookup (Gravatar/GitHub)
- Task list checkboxes with per-file local persistence

Privacy:
The extension runs locally in your browser and does not collect analytics or tracking data.
External content is only requested when needed:
- Markdown page itself (the page you opened)
- Optional external images when enabled (for markdown images and avatar lookups)

## Rankings

- #19,611 — Overall
- #59 — author
- #89 — viewer
- #158 — tasks
- #221 — lookup

## Permissions and access

### Permissions

- `<all_urls>`
- `storage`

### 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).

## Similar extensions and apps

- [Markdown Viewer](https://chrome-stats.com/d/empiric-markdown-viewer) — 53 users, 5.00 / 5
- [Markdown Viewer & Reader by mdedit.ai](https://chrome-stats.com/d/markdown-viewer-reader) — 60 users, 4.50 / 5
- [Markdown Viewer Webext](https://chrome-stats.com/d/markdown-viewer-webext) — 6,818 users, 4.17 / 5
- [Markdown Viewer Pro](https://chrome-stats.com/d/markdown-viewer-pro) — 11 users, 5.00 / 5
- [Markdown Reader Pro](https://chrome-stats.com/d/markdown-reader-pro) — 1 users
- [Markdown file reader](https://chrome-stats.com/d/markdown-file-reader) — 98 users, 2.50 / 5
- [Markdown Reader](https://chrome-stats.com/d/markdown-reader-ext) — 6,340 users, 5.00 / 5
- [Light MD Viewer](https://chrome-stats.com/d/light-md-viewer) — 32 users, 5.00 / 5
- [Online Markdown Viewer with HTML Preview](https://chrome-stats.com/d/online-markdown-viewer) — 65 users, 5.00 / 5
- [Markdown Viewer](https://chrome-stats.com/d/markdown-viewer-chrome) — 16,060 users, 3.80 / 5
- [Markdown Viewer](https://chrome-stats.com/d/markdown-directly) — 13 users
- [Markdown Editor for Firefox](https://chrome-stats.com/d/markdown-editor) — 556 users, 3.87 / 5

---

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