NovaPDF Studio
100% in-browser PDF editor with paragraph reflow & OCR
What it does
NovaPDF Studio is a 100% client-side PDF editing suite running locally inside your browser via WebAssembly. • Smart Paragraph Reflow: Edit multi-line text naturally without breaking layout. • Background Color Matching: Seamlessly blends edits on tinted, dark, or cream pages. • Local OCR: Digitize scanned documents directly in browser RAM with zero server uploads. • 100% Privacy & Zero-Data: No files are ever sent to remote servers. No signups, completely free.
Does the same job
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- PAPDF Assembler – client-side PDF editing2018 · ▲25
Here's a neat hack I made recently to do basic PDF editing directly in a browser—without having to upload anything to a server. I was initially looking for a way to do simple PDF modification (extracting pages, merging, and adding page numbers). There are some good server-side tools for this (QPDF, PDFTk, PDFBox, iText, Hummus), but for better speed and privacy I really wanted a 100% client-side solution. There are a few good JavaScript PDF libraries for reading and displaying PDFs (pdf.js) and creating PDFs from scratch (jsPDF, PDFKit), but I couldn't find any for editing existing PDFs. So,…
Novus PDF Studio4d ago · pdf.novusstreamsolutions.com · ▲2Fill, sign, and edit PDFs privately in your browser
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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