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Dev Toolkit

DeveloperUtilities

9-in-1 browser developer toolkit in a single HTML file: JSON formatter, Base64/URL/HTML encoder, JWT decoder, regex tester, markdown preview, diff checker, and more. Zero dependencies.

Tool tachodril single-file · partial offline
License: MIT Added: 2026-05-14
json base64 jwt regex markdown diff developer-tools single-file
Open tool Source