67toolz
Your everyday toolbox, right in the browser
What it does
• 60+ free browser-based tools in one place • Image, PDF, QR, text, media, calculator tools & more • No signup, no installation, no complicated setup • Fast, lightweight, and easy to use • Built to handle everyday tasks in just a few clicks • New useful tools are continuously being added
Use 64 free online tools for images, PDF, QR codes, text, calculators, dates, and media. No signup or installation required.
67toolz is a collection of 64 free online tools for image, QR code, text conversion, calculation, date, and media tasks. Use them immediately on desktop or mobile without creating an account or installing an app. Compress JPG, PNG, and WebP images, resize social media graphics, create and scan QR codes, encode or decode Base64, convert SRT subtitles to TXT, calculate percentages, discounts, VAT and payment fees, view world holidays, calculate D-Day, convert time zones, and check live cryptocurrency prices. Security and privacy are built in. Personal information, files, and entered text are not stored afterfrom 67toolz.com
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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