Markdown Viewer with 30+ Themes, Dark Mode, MathJax, Mermaid diagrams, Syntax Highlighted code blocks

Markdown Viewer - Firefox Add-on | 30+ Themes, Dark Mode, MathJax
Markdown Viewer is a secure and versatile Firefox add-on that allows you to render local and remote markdown files with 30+ themes, dark mode, MathJax formulas, syntax highlighted code blocks, and more. It provides full control over compiler options, settings synchronization, and is free and open source.
Add-on stats
Weekly download count: 271
Firefox on Android: No
Risk impact: Very low risk impact
Risk likelihood:
Manifest version: 3
Permissions:
- storage
- scripting
Host permissions:
- file:///*
Size: 2.50M
Email: si*****@outofindex.com
URLs: Website
Ranking
# 909 ▼ 14
Other platforms
Not available on Android
Want to check extension ranking and stats more quickly for other Firefox add-ons?
Install
Chrome-Stats extension
to view Firefox-Stats data as you browse the Firefox Browser Add-ons.
Add-on summary
✚ Video
✚ For specifics about the Firefox release read this document
https://github.com/simov/markdown-viewer/blob/main/firefox.md
✚ Features
✔ Secure by design ✔ Render local and remote file URLs ✔ Granular access to remote origins ✔ Multiple markdown parsers ✔ Full control over the compiler options
See moreUser reviews
Pros
- Great performance when configured properly
- Supports extensions like `mermaid` Markdown
- Active support and quick responses from the developer
- Cross-browser compatibility (works well on both Firefox and Edge)
- User-friendly once configured correctly
Cons
- Does not register .md files as a file type in the browser
- Complicated setup process for Linux users
- Inability to handle local file access without workarounds
- Does not support tables in Markdown
- Lacks comprehensive documentation for troubleshooting
Most mentioned
- Need to configure for it to work properly on Linux
- Does not open .md files directly in Firefox
- Complexity of initial setup
- Not supporting local URLs and requiring additional MIME type settings
- Missing support for Markdown tables
User reviews
by Chester, 2025-01-16
by Firefox user 18719343, 2024-12-06
Great extension.
BTW, Is there a way that i can replace '..' with any other character as the parent path?
by william smith, 2024-10-17
Add-on safety
Risk impact
Markdown Viewer does not require any sensitive permissions.
Risk impact analysis details
- Low Request access to the following domains:
Risk likelihood
Markdown Viewer has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details