Markdown Lens

Markdown Lens is a fast, native Markdown viewer for macOS. Simply double-click any .md file to see it beautifully rendered with full GitHub Flavored Markdown support.

EXPORT WITH PRECISION
• Export to Microsoft Word (.docx) with full formatting, images, and diagrams
• Export to PDF with customizable paper size and margins
• Export to self-contained HTML with embedded images
• Print directly with accurate formatting

DOCUMENT HEALTH / PUBLICATION READINESS CHECK
• Real-time spell check powered by Harper with a technical jargon dictionary
• Structural linting with one-click auto-fix for common Markdown issues
• Platform compatibility analysis for GitHub, BitBucket, and more
• At-a-glance health score (0–100) with click-to-navigate issue details

POWERFUL RENDERING
• GitHub Flavored Markdown with tables, task lists, and strikethrough
• Math equations with KaTeX ($inline$ and $$block$$ syntax)
• Diagrams with Mermaid (flowcharts, sequence diagrams, and more)
• Syntax highlighting for 190+ programming languages
• Footnotes with clickable references
• GFM Alerts — Note, Tip, Important, Warning, and Caution callouts

DESIGNED FOR YOUR WORKFLOW
• Opens instantly from Finder—just double-click any .md file
• Live reload automatically refreshes when you edit in any external editor
• Click links to other Markdown files to open them in new windows
• Light and dark mode support follows your system appearance

PRIVACY FOCUSED
• All processing happens locally on your Mac
• No analytics, no tracking, no network connections required
• Your documents stay on your device

Markdown Lens is free to use with all features included. An optional one-time purchase removes periodic reminder messages and supports continued development.

Perfect for developers, writers, students, and anyone who works with Markdown files.