All tools
20 developer utilities, grouped by category. Everything runs locally in your browser.
Saved
Popular
JSON Formatter
Format, validate and minify JSON instantly.
JSON Diff
Compare two JSON documents structurally.
Base64 Encoder / Decoder
Encode and decode Base64 without mangling Unicode.
JWT Decoder
Inspect a JSON Web Token’s header and claims.
UUID Generator
Generate UUIDs in bulk, locally.
Regex Tester
Test regular expressions against real text.
Unix Timestamp Converter
Convert between Unix timestamps and human dates.
Format, validate, compare and convert structured data between JSON, YAML and CSV.
JSON Formatter
Format, validate and minify JSON instantly.
JSON Minifier
Strip whitespace from JSON and see how much you saved.
JSON Diff
Compare two JSON documents structurally.
JSON to YAML
Convert JSON into readable YAML.
YAML to JSON
Convert YAML into formatted JSON.
JSON to CSV
Turn a JSON array into a spreadsheet-ready CSV.
CSV to JSON
Turn CSV rows into a JSON array.
Translate data between the encodings the web runs on — Base64, URL escaping and JWTs.
Produce identifiers, secrets and codes using your browser’s cryptographic randomness.
Text
4Test patterns, compare revisions, reshape casing and measure prose.
Convert timestamps and build schedules without second-guessing time zones.