# MarkLens — Markdown Viewer

> 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.

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

## Overview

- **ID:** `marklens-markdown-viewer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Kraftware Labs
- **Category:** web-development,appearance
- **Daily users:** 34
- **Weekly downloads:** 2
- **Version:** 2.0.0
- **Last updated:** 2026-04-12
- **First published:** 2026-03-21
- **Size:** 3.11 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/marklens-markdown-viewer/)
- **Website:** [https://www.kraftwarelabs.com](https://www.kraftwarelabs.com/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/marklens-markdown-viewer/privacy/](https://addons.mozilla.org/firefox/addon/marklens-markdown-viewer/privacy/)

## Description

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

<strong>NEW IN v2 — EXPORT &amp; PRESENTATION MODE:</strong>
<ul><li>Export to <strong>PDF</strong> (themed print with your active theme), <strong>DOCX</strong> (editable Word document), or <strong>HTML</strong> (self-contained web page)</li><li><strong>Presentation Mode</strong> — turn any markdown doc into a full-screen slideshow, split on <code>---</code> horizontal rules</li><li>Keyboard-driven slides (arrows, space, Home/End, Esc), auto-fading chrome, live progress counter</li><li>Gantt chart support in Mermaid diagrams</li></ul>
<strong>THE ONLY MARKDOWN VIEWER WITH DOCUMENT STYLES:</strong>
<ul><li>6 Font Schemes — Minimal, Modern, Classic, Editorial, Academic, Creative</li><li>3 Rendering Modes — Classic (GitHub-style), Accented (colored heading accents), Document (Word-like)</li><li>10 Beautiful Themes — GitHub Light/Dark, Dracula, Nord, Solarized, One Dark, Tokyo Night, Monokai, Auto</li></ul>
<strong>AUTO-RENDER MARKDOWN EVERYWHERE:</strong>
<ul><li>GitHub, GitLab, and Bitbucket raw file URLs — rendered automatically</li><li>Local files (<code>file://</code>) — open any .md file, it just works</li><li>Any page — click <em>"Render this page"</em> in the popup for manual rendering</li><li>Local folder navigation — browse directories, click to render</li></ul>
<strong>POWERFUL FEATURES:</strong>
<ul><li>Syntax highlighting for 10+ languages (Shiki — VS Code quality)</li><li>Export as themed PDF, editable DOCX, or self-contained HTML</li><li>Presentation Mode with keyboard navigation and auto-fading chrome</li><li>Resizable Table of Contents with persistent width</li><li>Mermaid diagram rendering (flowcharts, sequence, class, Gantt charts)</li><li>KaTeX math rendering (inline and block)</li><li>Table of Contents sidebar with scroll tracking</li><li>Tabbed sidebar — switch between Files and Outline</li><li>Inline settings panel — change everything without leaving the page</li><li>8-button floating action strip for instant adjustments</li><li>Word count, reading time, scroll progress in toolbar</li><li>Named style profiles — save and switch between setups</li><li>Per-site style rules — auto-apply profiles by URL pattern</li><li>Export/import settings to share with teammates</li><li>12 languages — English, Spanish, French, German, Portuguese (PT/BR), Japanese, Chinese, Korean, Italian, Russian, Arabic (RTL)</li><li>Custom CSS injection</li><li>Print-friendly rendering</li><li>Auto-reload for local files</li></ul>
<strong>PRIVACY FIRST:</strong>
<ul><li>All rendering happens locally — nothing leaves your browser</li><li>No analytics, no tracking, no telemetry</li><li>All fonts bundled — zero external network requests</li><li>Only needs "storage" permission to save your preferences</li></ul>
Works with local files (<code>file://</code>), GitHub/GitLab/Bitbucket raw URLs, and any markdown page. Zero configuration needed.

## Rankings

- #19,657 — Overall
- #55 — slideshow
- #127 — viewer
- #181 — present
- #234 — documentation

## Permissions and access

### Permissions

- `storage`
- `activeTab`
- `scripting`
- `downloads`

### 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/marklens-markdown-viewer)