MyPDF4U
Free online PDF tools for students and everyday work
What it does
MyPDF4U is a simple free online PDF toolkit for students, professionals, and everyday users. Convert, merge, split, compress, rotate, organize, and manage PDF files directly in your browser. No complicated software installation—just choose a tool, upload your file, and get your result.
Convert, compress, merge, split, OCR and organize PDF files free in your browser. No account, no installation — fast, private, and easy to use.
Convert, compress, merge, split and manage your PDF files online — right in your browser. Grouped by what you're trying to do. Tools still in development are labelled. MyPDF4U is a small toolbox for the document jobs that come up every week: turning photos into a PDF, shrinking a scan so it fits an upload limit, joining separate files into one, pulling a few pages out of a long report, or exporting pages as images. Each tool lives on its own page and opens straight onto the upload area — there is no dashboard to learn and no sign-up before you can try it. Contracts, invoices, resumes and coursework all pass through these tools. Our live tools run entirely on your device, so the file you…from mypdf4u.com
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Launched alongside, August 2026
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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