ateByteApps DevTools

ateByteApps DevTools is a free collection of fast, no-nonsense developer utilities that run entirely in your browser. There are more than 29 tools in the set — a JSON formatter, JWT decoder, regex tester, timestamp converter, UUID and hash generators, Base64/URL/HTML encoders, a cron parser, CIDR calculator, chmod calculator, password generator, colour picker and plenty more.

Everything is processed locally on your machine — nothing you paste is ever uploaded to a server — so it is safe to use with JWTs, config files and other sensitive data. There are no accounts, no paywalls and none of the pop-up clutter that usually comes with free online tools. Many tools also support shareable links, so you can send a colleague a pre-filled result with a single URL.