Toolbo
33 free browser tools that run privately on your device
What it does
Toolbo is a growing collection of 33 free browser-based tools for images, PDFs, documents, developers, and everyday tasks. Most tools run locally in your browser, so your files don't need to be uploaded to a server. No sign-up required, no complicated setup—just open a tool and use it.
Free online tools for images, PDFs, design, developers, video, audio and everyday tasks. Fast, private and easy to use with zero tracking.
Free, fast, private online tools for images, PDFs, video, audio, code utilities, and multi-step automated workflows with zerofrom toolbo.pages.dev
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- ToolHub-Free Online Tools for PDFs&More23d ago · trytoolhub.net · ▲1
Simple tools for everyday digital tasks.
More dev tools this month
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Open-source GTM skills for technical founders
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 · 17d ago · simedw.com