DevToolKit - 14 free browser dev tools, no tracking, offline, 7 languages

A collection of 14 essential developer tools that run entirely in your browser. No server, no tracking, no sign-up required. Tools include JSON formatter, Base64 encoder/decoder, JWT decoder, timestamp converter, UUID generator, hash generator, diff checker, Markdown preview, CSS gradient generator, and more. 100% private, works offline, supports 7 languages.