Show HN: Markdown Viewer and Editor

beerglass 22 points 11 comments August 31, 2026
kingsbridge-consultancy.com · View on Hacker News

I built an online viewer and editor for .md files where the file stays on your machine. Free to use and code is available under MIT License here: https://github.com/hattray/markdown-editor You can also install it as a Chrome/Edge app so that it works for files on your desktop by double-clicking. Supports standard .md files with formatting, syntax-highlighting for code, table of contents, Mermaid diagrams, LaTeX via KaTex. Also supports exporting to .html, .pdf and .png. Please give it a try and share your feedback for improvements.

Discussion Highlights (3 comments)

jystervinou

Hi, Noob question, but how do you author a math equation? There are dedicated editors I guess?

hyperhello

Thoughtful UI. Really nice. Good job!

eleventen

No syntax highlighting in the editor? I vibecoded a pretty robust browser Filesystem API based markdown editor myself too last week. Recommend either rolling your own with a transparent textbox layered approach or just using Monaco or https://codemirror.net/ . I did a markdown kanban thing. Filesystem API is very cool and underused. https://github.com/subdavis/mdello/

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