ToolBox
40+ free online tools. No signup. Works in your browser.
What it does
📝 Text Tools — word counter, case converter, password generator, Base64 🖼 Image Tools — compressor, resizer with crop, full image editor, converter 📁 File Tools — CSV↔JSON, JSON formatter, URL encoder 🛠 Utilities — QR code generator, color picker, hash generator, unit converter 💰 Finance — EMI calculator, GST calculator, BMI, tip splitter 💻 Developer — regex tester, JWT decoder, CSS gradient generator, meta tag generator
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More dev tools this month
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The first open-source price index for GPU compute
Dev tools · 10d ago · getcomputable.com
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 · 2d ago · opentrailpaper.com
Launched alongside, April 2026
the whole month →
- AG
Thought the resources for GPU arch were lacking, so here we are
Life & fun · Apr 2026 · jaso1024.com
- IB
Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.
AI · Apr 2026 · github.com
- BC
Life & fun · Apr 2026 · sam-burns.com
- IB
With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.
AI · Apr 2026 · text.blogosphere.app