MarkView: Markdown Viewer with Mermaid Diagrams, Math & Export

MarkView is a fast markdown viewer that opens .md files right in your browser and processes everything on your device - Mermaid, PlantUML, Graphviz and WaveDrom diagrams, KaTeX math, syntax highlighting, smart TOC, and export to Word, HTML, and PDF. Works with local files and with raw markdown served from GitHub, GitLab, and documentation sites. No accounts, no data collection. ⚡ PRODUCTIVITY & UNIQUE FEATURES - Export to DOCX and HTML with formatting preserved - Print to PDF - clean, optimized layout without toolbars or sidebars, via browser print - Presentation Mode - turn any markdown document into slides, with themes, speaker notes, touch navigation, and auto-play - Mind Map view - see your document's structure as an interactive mind map; download as SVG, PNG, or JPEG - Annotations - highlight, underline, and comment on your documents; notes persist across sessions and appear in print and exports - Folder Browser - navigate your entire project structure without leaving the tab - Folder Bookmarks - save and instantly access frequently used directories - Search in Folder - full-text search across every markdown file in the open folder - Live auto-refresh when files change - edit in your editor and watch the rendered page update - Recent Documents - quickly reopen recently viewed files from the popup - Word Count & Reading Time - live statistics as you read: words, characters, estimated time - Reading Progress Bar - visual indicator showing your position in long documents - Raw view toggle - instantly switch between rendered and source view - Table of Contents (TOC) with smooth scrolling for long documents - Sticky table headers - the header row stays visible while you scroll long tables - One-click copy button on all code blocks - KaTeX math equations - inline and display mode with full support for complex mathematical notation - Mermaid, PlantUML, Graphviz & WaveDrom diagrams - flowcharts, UML, graphs and timing diagrams rendered inline, with interactive fullscreen zoom & pan - Image viewer - lightbox with gallery navigation, zoom, pan, and lazy loading - External link indicators - visual previews and icons for outbound links - Render .txt as Markdown - useful for llms.txt, changelogs, and plain-text notes 🌍 LANGUAGES & TEXT DIRECTION - Interface available in 19 languages - Full right-to-left (RTL) rendering - documents in RTL scripts display correctly, with automatic per-paragraph direction detection and a manual Text Direction setting - RTL support carries into print, HTML, Word, and mind map exports 🌐 MARKDOWN READER FOR LOCAL AND REMOTE FILES MarkView activates on markdown files served as plain text: - Local files (file:///) - enable "Allow access to file URLs" in Chrome settings - Raw file URLs from GitHub, GitLab, and other code-hosting services - Any URL ending in .md, .markdown, .mdx, or another markdown extension - Plain .txt files rendered as markdown for convenience ⚠️ NOTE: MarkView renders RAW files only. It won't activate on sites that already render markdown (GitHub blob pages, ReadTheDocs, GitBook, etc.) - those have their own rendering. 🔒 PRIVATE BY DESIGN - Zero data collection - no personal information collected, ever - No analytics, no tracking, no telemetry, no cloud services - All processing happens locally in your browser - Your files never leave your device - the one optional network feature (the PlantUML diagram server) is off by default and requires your explicit consent - Settings stored locally using Chrome's storage API - Built on trusted, widely used open-source rendering libraries 🚀 QUICK START 1. Install MarkView - click "Add to Chrome" 2. Test instantly: visit https://raw.githubusercontent.com/facebook/react/main/README.md 3. For local files: go to chrome://extensions → MarkView → Details → enable "Allow access to file URLs" 4. Open any .md file - drag & drop, File → Open, or click a link 📞 SUPPORT - FAQ: https://getmarkview.com/support - Email: support@getmarkview.com - GitHub: https://github.com/markview-app/support 🔗 LINKS - Website: https://getmarkview.com/ - Privacy Policy: https://getmarkview.com/privacy-policy - Terms: https://getmarkview.com/terms 🔐 PERMISSIONS - Storage: Save theme, font, and layout preferences locally - ActiveTab: Read file content from the current tab for rendering - Downloads: Export to HTML and DOCX files - File URLs: Access local .md files (disabled by default) - Host Permissions: Render raw markdown files from any website you open All processing is local. No data is ever sent to external servers.