Your Essential Developer Tools
Fast, free, and runs entirely in your browser.
Your Essential Developer Tools
Fast, reliable, and 100% client-side tools for everyday development tasks. Format JSON, convert Epoch, encode Base64, parse URLs, and more—all for free.
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Why Choose FastDevTools?
Lightning Fast
All tools run directly in your browser, ensuring instant results without server delays.
100% Private
Your data never leaves your browser. We don't store, log, or transmit any of your input.
Beautiful & Intuitive
Enjoy a clean, modern UI designed for developers, with dark mode support and a focus on UX.
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