All JSON tools
Tools for formatting, checking, comparing, and converting JSON, plus a JWT decoder and an online clipboard for sending text between devices. They all run in your browser except the clipboard, which has to store your text briefly to pass it along.
Format & fix
Validator & formatter
Check syntax, repair common mistakes, and format or minify JSON.
JSON repair
Fix broken JSON, including AI output, and see every change.
JSON minify
Strip whitespace and see how much smaller it gets.
JSONC to JSON
Remove comments and trailing commas from tsconfig.json or VS Code settings.
Inspect
JSON viewer
Explore large JSON as a tree, search it, and copy paths.
Compare JSON
Find added, removed, and changed values in two documents.
JSON Schema validator
Check JSON against a schema, or generate one from sample data.
JSON error lookup
Paste an error message to find the cause and the spot in your JSON.
JWT decoder
Read a token’s claims and verify its signature.
JWT generator
Create a signed test token with your own claims.
Convert & encode
JSON to CSV
Choose columns, preview spreadsheet rows, and download CSV.
CSV to JSON
Convert Excel or Google Sheets exports to JSON.
JSON to TypeScript
Generate interfaces from a sample API response.
JSON to YAML
Convert JSON to YAML for config files.
YAML to JSON
Convert YAML files to formatted JSON.
Escape / unescape
Encode text as a JSON string or decode one layer of escaping.