Slate PDF
The PDF toolkit that runs in your browser.
What it does
Merge, split, compress, convert, sign and edit PDFs right in your browser. No uploads, no sign-up, no file size limits.
Merge, split, convert, compress, edit, and secure your PDFs — all processing happens in your browser. Your files never touch our servers. Open one document and do everything to it in one sitting. Rewrite the text, black out what should not be seen, reorder the pages, sign it, stamp it, then lock it — each step picks up exactly where the last one left off, and you can download the file at any point. Unlike traditional PDF software that requires installation and expensive subscriptions, Slate PDF processes your files locally — meaning your documents never leave your device. Merge multiple PDFs, split large files, compress without quality loss, convert between formats, add signatures, and…from slatepdf.space
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Dev tools · 29d ago · gtmcofounder.com
OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 1d ago · opentrailpaper.com
Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io
- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io
I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 16d ago · simedw.com