LocalPDF
Private, in-browser PDF tools. Zero cloud uploads.
What it does
Merge, split, compress, convert, sign, OCR, watermark, and protect PDFs entirely in your browser. No file uploads, no account needed, completely free.
100% secure, private, and client-side. Your files never leave your computer. Everything is processed instantly in your web browser. Delete, reorder, duplicate, rotate, or insert blank pages into your PDF visually. Combine multiple PDF files into a single document in any order you choose. Extract specific pages or page ranges from a PDF, or split all pages into separate files. Reduce the file size of your PDF documents by optimizing and scaling images client-side. Add custom text overlays to document pages, drag, size, and stamp them. Extract text from scanned PDF documents locally using built-in OCR. Extract all pages in a PDF file into separate high-quality JPG/PNG images. Convert JPG,…from uselocalpdf.com
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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.
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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