Fastols
Free web tools for PDF, Images, SEO, and Developers
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Fastols is a 100% free collection of web tools designed to make your daily digital tasks easier. It includes powerful tools for converting and compressing PDFs, editing images, developer utilities, and SEO tools. No registration, no subscription, and no hidden fees—just fast, clean, and free tools.
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Convert, compress, edit and improve your files and images online — free and without sign-up. Start fast with the tools millions of users trust every day. Organized into clear categories so you find what you need infrom fastols.com
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SmartToolsNest5d ago · smarttoolsnest.com · ▲1Free online tools for developers, SEO, PDFs, images & more




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 · 16d ago · simedw.com