Privacy-first developer utilities
Developer tools that never leave your browser
Privacy-first developer utilities. Formatter, encoder, hashing, diffing, regex and more — free, fast and offline. Your data stays on your device, period.
… downloaded0.0 KB of your data sent
Works offline once loaded100% client-side
Every tool runs locally in your browser. Nothing is uploaded, logged or shared.
No accounts required
No signup, no email, no tracking walls. Free tools for anyone, instantly.
Fast & free
Instant results on any device — most tools run entirely in your browser.
Need something validated, formatted or hashed right now?
Fast, free online developer tools that run 100% in your browser — JSON formatter, Base64, hashing, regex testing, diff, UUID and URL utilities.
Explore 27 free toolsDevWorkBench is a free, privacy-first toolkit for developers. No cookies for tracking, no analytics on your code, no data sent to servers.