Free Developer Tools

Format JSON, encode Base64, decode JWT, generate hashes and convert data formats quickly.

Popular Developer Tools

Choose a focused browser-local tool below. Each utility is free to use, requires no signup, and is designed to keep files on your device whenever browser APIs allow it.

Why this category exists

Format JSON, encode Base64, decode JWT, generate hashes and convert data formats quickly. These pages are built for repeat workflows: quick edits, document cleanup, and everyday productivity tasks that should not require account creation.

Privacy-first workflow

Most tools run locally in the browser. That keeps common file and text operations fast while reducing unnecessary uploads for simple tasks.