Free Chrome Extension — Manifest V3
RAMSIO Markdown Viewer is a free Chrome extension that renders Markdown files beautifully in your browser — with 3 hand-crafted themes, PDF and HTML export, Mermaid diagrams, KaTeX math equations, and GitHub/GitLab/Bitbucket integration.
All processing happens entirely within your browser. No data is collected, no analytics, no network calls. The extension works fully offline.
Free forever. No sign-up. No telemetry. No ads. Your files never leave your device.
GitHub (light), Professional (business), Minimal (distraction-free) with Light/Dark/Auto color schemes
Flowcharts, sequence diagrams, class diagrams, and more — rendered inline
LaTeX math equations rendered inline and in display blocks
Code blocks with Prism.js syntax highlighting
Export to PDF (via print dialog) and self-contained HTML
Auto-generated heading hierarchy (H1–H6) with click-to-jump
Right-click “Preview with RAMSIO” on GitHub, GitLab, and Bitbucket
Word count, character count, and estimated reading time
Chrome Web Store listing link, screenshots, and detailed documentation will be available here when ready.
| Shortcut | Action |
|---|---|
| Ctrl+Shift+M | Open extension |
| Ctrl+Shift+P | Preview current Markdown file |
| Alt+O | Toggle Document Outline |
| Ctrl+I | Show Document Statistics |
| Alt+H | Export to HTML |
| Ctrl+P | Print / Export to PDF |
| F11 | Toggle Fullscreen |
| F1 | Help |
| Ctrl++ / Ctrl+- | Zoom in / out (75%–200%) |
| Ctrl+0 | Reset zoom |
| Browser | Google Chrome 110 or later (Manifest V3) |
|---|---|
| Platforms | Windows, macOS, Linux, Chrome OS |
| Internet | Not required — works entirely offline |
| Account | Not required — no sign-up needed |
Looking for a desktop Markdown editor with full editing capabilities?