Uvolix
70+ free PDF, image, text & developer tools—no signup
What it does
Uvolix combines 70+ practical PDF, image, text, developer, calculator and document-building tools in one fast, mobile-friendly website. Merge, split and compress PDFs, convert and optimize images, format JSON, test typing speed, calculate everyday values and create downloadable documents. Core tools are free, require no signup and many process files privately in your browser.
Use free online PDF, image, text, developer, calculator, resume and bio-data tools on Uvolix. Fast browser-based utilities with no signup required.
Discover useful online tools and practical guides—all in one simple place. Private, instant utilities that work directly in your browser. Count words, characters, sentences, paragraphs and reading time instantly. Measure typing speed, accuracy and errors with timed practice tests. Extract selectable PDF text and create an editable DOCX Word document. Recognize English text from JPG, PNG or WebP images locally. Practical articles for building, learning and solving problems. Convert selectable PDF text to an editable DOCX and understand layout limitations. Rotate selected PDF pages by 90 or 180 degrees. Learn the correct workflow and verification steps. Extract selected pages into a new…from uvolix.com
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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