See your markdown in a new light
A free browser extension that transforms how you read markdown. 6 font schemes, 3 rendering modes, 10 themes — the only markdown viewer with Document Styles. Add it to your browser, open any .md file, and see the difference.
The only markdown viewer with Document Styles
Other viewers give you themes. MarkLens gives you a complete styling system — font schemes that transform typography, rendering modes that reshape headings, and quick controls that let you fine-tune every detail.
Font Schemes
6 presets that change heading and body typography with one click.
Rendering Modes
Classic (GitHub-style), Accented (colored heading accents), Document (Word-like heading bands).
Quick Controls
8-button floating action strip for instant font, width, spacing, and mode changes. Always accessible, never in the way.
Everything built in
No config, no plugins, no extra permissions.
💻Syntax Highlighting
Shiki-powered, 10+ languages, VS Code quality. Theme-matched colors.
📊Mermaid Diagrams
Flowcharts, sequence, class diagrams. Rendered inline, theme-aware.
🔢KaTeX Math
Inline and block math. Beautiful rendering, copy-paste friendly.
📑Table of Contents
Auto-generated sidebar. Scroll tracking. Click to navigate.
⚙Inline Settings
Slide-out panel. Change everything without leaving the page.
🔒100% Private
All local. No servers, no tracking, no analytics. Fonts bundled. Zero external requests.
10 beautiful themes
Plus Auto mode that follows your OS dark/light preference.
Get MarkLens
Free. No account. Works immediately.
Also works on Brave, Opera, Arc, Vivaldi, and any Chromium browser.