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Show HN: Laser Graffiti

https://laser.consti.de
205•con•2d ago•42 comments

Show HN: I built a live stream site where every spot is instantly AI-generated

https://videoai.me/live
2•Paul_Grsl•1h ago•0 comments

Show HN: Unitpost/email – open-source Email Components and Layouts

https://www.unitpost.com/email
3•docreator•2h ago•1 comments

Show HN: We built the smallest dual-band aircraft tracker

https://pantsforbirds.com/the-worlds-smallest-dual-band-ads-b-receiver-module/
87•CoolNamesAllTkn•5d ago•22 comments

Show HN: Markdown Viewer and Editor

https://kingsbridge-consultancy.com/md-viewer/
29•beerglass•15h ago•14 comments

Show HN: Serendipity – rediscover the web one interesting page at a time

https://serendipity.surf/
5•RaCaS123•8h ago•1 comments

Show HN: FnScribe – Open-source, offline dictation for macOS

https://github.com/AlgorithmicResearchGroup/fnscribe
35•modagent•4d ago•24 comments

Show HN: Seatlr – We rebuilt our traveler chat into an AI-powered travel network

https://www.seatlr.com/
3•alihadi965•8h ago•0 comments

Show HN: Corporate Mind Games – logic puzzles with a sarcastic corporate theme

https://corporatemindgames.com/
47•dontwordle•19h ago•13 comments

Show HN: Floe – an open-source plugin for sample libraries – CLAP/VST3/AU

https://floe.audio/
19•windell•1d ago•10 comments

Show HN: SlideOps – slides from a repo that flag when they drift from the code

https://github.com/glukicov/slideops
21•lukicov•23h ago•5 comments

Show HN: I Built the AI command center that runs all local models in one place

https://generativeide.com/
2•rohangnaneshjh•8h ago•0 comments

Show HN: Saccade – Live semantic browser truth for AI agents

https://github.com/nanlogic/saccade
5•sacravenger•12h ago•0 comments

Show HN: NFC Energy-Harvesting PCB Business Card with an MCU

https://wilsonharper.net/projects/businesscard/
216•WilsonHarper•3d ago•30 comments

Show HN: What Happens When You Give Your AI Agents a Voice and an Attitude

https://fellowgeek.github.io/mcp-speak/
9•pcbmaker20•21h ago•5 comments

Show HN: A Curated Library of Hero Sections from Fast-Growing Startups

https://www.herotxt.page/
4•lynn_xx•9h ago•2 comments

Show HN: I missed the moving blocks, so I built a real Linux disk defragmenter

https://github.com/gbin/defragger
96•gbin•6d ago•69 comments

Show HN: I rebuilt tank game with new style

https://www.battle-tank.com/
3•dutay05•10h ago•0 comments

Show HN: Chaosword – A Crossword?

https://chaosword.com
2•ghosts_•10h ago•0 comments

Show HN: Keel - A conductor, not an agent loop

https://daneb.github.io/keel/
4•danebalia•15h ago•0 comments

Show HN: A Bluesky bot that shares Wikipedia links from the HN front page

https://bsky.app/profile/hnwiki.bsky.social
5•doctoboggan•7h ago•1 comments

Show HN: Nos4, new nostalgic internet toy. A complete IOS4 right on the browser

https://nos4.fun/
3•1etu•12h ago•0 comments

Show HN: Typebase – A single-folder back end you write in TypeScript

https://typebase.io
118•andrewww-dev•6d ago•46 comments

Show HN: Galaxium, an experimental WebGPU space explorer

https://galaxium.app
135•guillaumec•1w ago•40 comments

Show HN: Tubeviz – automatically edit YouTube footage to music

https://github.com/interrupt21h/tubeviz
3•int0x21•15h ago•0 comments

Show HN: cdai – the AI-enhanced cd command

https://github.com/franzenzenhofer/cdai
2•franze•15h ago•0 comments

Show HN: Claude Code Arcade

https://github.com/jystervinou/claude-code-arcade
3•jystervinou•15h ago•0 comments

Show HN: The load-bearing vocabulary of Claude

https://louisabraham.github.io/load-bearing/
700•Labo333•5d ago•326 comments

Show HN: Guess the AI model from its web design

https://raq.com/blog/can-you-spot-ai-web-design/quiz
5•hawke•16h ago•0 comments

Show HN: SubSmith – Turn your own videos into language-learning material

https://subsmith.app
76•IbrahimF96•4d ago•51 comments
Open in hackernews

Show HN: Markdown Viewer and Editor

https://kingsbridge-consultancy.com/md-viewer/
29•beerglass•15h ago
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.

Comments

jystervinou•13h ago
Hi,

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

Garlef•13h ago
There's a language for it (LaTeX).

It looks like this:

\int_{-\infty}^{\infty} e^{-x^2}\,dx = \sqrt{\pi}

jystervinou•11h ago
Thank's, i was wondering if people were typing this latex by hand, or with a specialized visual editor.
beerglass•8h ago
Update: added an insert-equation button in the toolbar of my MD Viewer
beerglass•13h ago
Try this: https://github.com/arnog/mathlive
jystervinou•11h ago
Great. There is a live editor here for testing with the custom keyboard: https://mathlive.io/mathfield/
beerglass•8h ago
Included a basic "insert math" option to insert LaTeX for math symbols, greek letters, relations & operators. If you work with Math equations regularly, try it out and share any suggestions for improvements.
hyperhello•11h ago
Thoughtful UI. Really nice. Good job!
beerglass•8h ago
Thanks, mate. If you work with .md files all day, try this for a few days and share feedback or suggestions for improvements.
eleventen•9h ago
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/

beerglass•8h ago
Thanks for your suggestion. I use plain textarea so that Undo, Spellcheck work seamlessly. Monaco at 5MB+ is bigger than the whole app. Will instead try highlight.js for transparent overlay.
docreator•2h ago
Was just looking for one today, cuz wherever .MD is produced - not always has a preview like in VSCode or Cursor.
llagerlof•1h ago
I like this markdown editor library for creating wysiwyg markdown editors.

https://milkdown.dev

dssureshk•43m ago
Nice tool