JSON Formatter & Validator
Pretty-print or minify JSON and see a plain-language parsing error when the document is invalid.
10 tools
Developer Tools
Format data, convert between JSON, CSV, and YAML, and inspect tokens, timestamps, and cron expressions without uploading the contents.
JSON to CSV Converter
Turn an array of flat objects into CSV, and stop when a nested value would have to be dropped.
JSON to YAML Converter
Convert JSON into a readable YAML document without changing the data.
YAML to JSON Converter
Parse a practical YAML subset and show the equivalent JSON.
Base64 Encoder & Decoder
Encode or decode UTF-8 text as standard or URL-safe Base64.
URL Encoder & Decoder
Percent-encode or decode text using RFC 3986 component rules.
JWT Decoder
Decode a JSON Web Token header and payload. The signature is never reported as verified.
Regex Tester
Try a JavaScript regular expression and list matches, including an error when the pattern is invalid.
Unix Timestamp Converter
Convert Unix seconds or milliseconds to a calendar time in UTC and another time zone, or the other way around.
Cron Expression Generator
Build a five-field cron expression and read it in plain language. Nothing is scheduled.