MarkLens — Markdown Viewer

Name: MarkLens — Markdown Viewer
Author: Kraftware Labs

The only markdown viewer with Document Styles — Export to PDF/DOCX/HTML, Presentation Mode, 10 themes, 6 font schemes, syntax highlighting, Mermaid diagrams, KaTeX math. 12 languages. Free, private, zero config.

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Install

Features & Capabilities

MarkLens transforms how you read markdown files. Install it, open any .md file, and see the difference.

NEW IN v2 — EXPORT & PRESENTATION MODE:

Export to PDF (themed print with your active theme), DOCX (editable Word document), or HTML (self-contained web page)
Presentation Mode — turn any markdown doc into a full-screen slideshow, split on --- horizontal rules
Keyboard-driven slides (arrows, space, Home/End, Esc), auto-fading chrome, live progress counter
Gantt chart support in Mermaid diagrams

THE ONLY MARKDOWN VIEWER WITH DOCUMENT STYLES:

6 Font Schemes — Minimal, Modern, Classic, Editorial, Academic, Creative
3 Rendering Modes — Classic (GitHub-style), Accented (colored heading accents), Document (Word-like)
10 Beautiful Themes — GitHub Light/Dark, Dracula, Nord, Solarized, One Dark, Tokyo Night, Monokai, Auto

AUTO-RENDER MARKDOWN EVERYWHERE:

GitHub, GitLab, and Bitbucket raw file URLs — rendered automatically
Local files (file://) — open any .md file, it just works
Any page — click "Render this page" in the popup for manual rendering
Local folder navigation — browse directories, click to render

POWERFUL FEATURES:

Syntax highlighting for 10+ languages (Shiki — VS Code quality)
Export as themed PDF, editable DOCX, or self-contained HTML
Presentation Mode with keyboard navigation and auto-fading chrome
Resizable Table of Contents with persistent width
Mermaid diagram rendering (flowcharts, sequence, class, Gantt charts)
KaTeX math rendering (inline and block)
Table of Contents sidebar with scroll tracking
Tabbed sidebar — switch between Files and Outline
Inline settings panel — change everything without leaving the page
8-button floating action strip for instant adjustments
Word count, reading time, scroll progress in toolbar
Named style profiles — save and switch between setups
Per-site style rules — auto-apply profiles by URL pattern
Export/import settings to share with teammates
12 languages — English, Spanish, French, German, Portuguese (PT/BR), Japanese, Chinese, Korean, Italian, Russian, Arabic (RTL)
Custom CSS injection
Print-friendly rendering
Auto-reload for local files

PRIVACY FIRST:

All rendering happens locally — nothing leaves your browser
No analytics, no tracking, no telemetry
All fonts bundled — zero external network requests
Only needs "storage" permission to save your preferences

Works with local files (file://), GitHub/GitLab/Bitbucket raw URLs, and any markdown page. Zero configuration needed.

User Growth & Download Statistics

Add-on

By:

Kraftware Labs

Daily users:

18 1

Version:

2.0.0 Last updated: 2026-04-12

Version code:

6217195

Creation date:

2026-03-21

Risk:

Permissions:

Content scripts matches:

Size:

3.11MB

Email:

pr*****@gmail.com

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-03

Compare stats and ranking:

Ranking

# 24,414 ▲ 475

Other rankings

#50 in slideshow keyword 13 ▼ 1#143 in viewer keyword 60 ▲ 2#211 in present keyword 31 ▲ 5

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Kraftware Labs

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/marklens-markdown-viewer/

Email:

pr*****@gmail.com

Website:

https://www.kraftwarelabs.com

Permission Change History

2026-04-12: Version 0.11.1 → 2.0.0

Add Permissions: downloads

Is MarkLens — Markdown Viewer Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

MarkLens — Markdown Viewer requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

MarkLens — Markdown Viewer is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****