Markdown Studio

Render .md files with KaTeX math, code highlighting, tables, Mermaid, TOC, comments, edit mode, and PDF/Word export.

Markdown Studio is an all-in-one toolkit for Markdown files in your browser. Read, edit, and export .md without leaving the tab. WHAT IT DOES • Renders Markdown with LaTeX math (KaTeX), syntax-highlighted code, GitHub-flavored tables, Pandoc footnotes, and Mermaid diagrams. Light/dark themes, collapsible sidebar TOC. • Split-pane source editor with live preview and scroll sync; save edits as a new .md download. • Comment on any selected text — a dashed underline marks the passage; export every comment as a sidecar .md that records the quote, its context, and the nearest heading, leaving the original file untouched. • Saves as PDF — math, diagrams, code, and footnotes paginate cleanly. • Saves as Word (.docx) with EDITABLE EQUATIONS. Math is embedded as OMML, not screenshots — open the .docx in Word and edit any formula in the equation editor. Tables, footnotes, hyperlinks, and lists are native Word elements too. Most browser-to-Word workflows turn math into flat images you can only resize. Markdown Studio keeps it as math. FOR LOCAL FILES Enable "Allow access to file URLs" at chrome://extensions → Markdown Studio → Details. Chrome turns this off by default; http(s) Markdown works without it. PRIVACY No data leaves your browser. No analytics, no telemetry, no cookies. UI preferences and comments on local files are saved in your browser's localStorage; comments on web pages stay in memory only and clear on refresh. Source on GitHub; every dependency is bundled. PERMISSIONS Content-script access to .md / .markdown / .mdown URLs only. LIMITATIONS • Pages already served as text/html are left alone. • PlantUML not supported (Mermaid is). • Same-page anchor links render as plain text in Word export.