I finally shipped something I've been working on for a while and I'm pretty excited about it.
I got tired of landing on sketchy sites full of ads every time I needed to format some JSON or decode a JWT. So I built something cleaner.
It's called DevToolKit — 18 developer tools, all free, all running 100% client-side in your browser. No accounts, no installs, just open and use.
- JSON Formatter & Validator
- JSON Converter (to CSV, XML, YAML, SQL)
- JSON Schema Validator
- JSON Diff
- CSV Viewer
- Data to Excel
- Base64 Encode & Decode
- Image to Base64 & Back
- JWT Encode & Decode
- Hash Generator (MD5, SHA-256, SHA-512)
- UUID Generator (v1, v4, v7)
- Fake Data Generator
- Regex Tester
- Word & Character Counter
- and more
Your data never leaves your browser.
The part I'm most proud of: you can load the page, turn off your wifi, and every single tool keeps working. No server, no API calls, nothing.
Try it — open a tool, disconnect, paste your data. It just works.
🔗 [https://www.devtool-kit.com]
Would love to hear what you think. What's missing? What could be better? I'm all ears.
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