// free online developer tools
JSON formatter, JWT decoder, UUID generator, Base64 encoder and more — free browser-based tools that run entirely on your device. No signup required.
Paste JSON and format it with readable indentation.
Check whether a JSON document is syntactically valid.
Remove whitespace from JSON to make it as compact as possible.
Generate random version 4 UUIDs.
Encode text to Base64 or decode a Base64 string back to text.
Decode a JWT header and payload locally in your browser.