JSON Formatter / Validator
Format, minify and validate JSON without uploading the payload.
Convert configuration documents between JSON and YAML.
Explore nested JSON with a readable tree structure.
Encode and decode UTF-8 text as Base64.
Encode and decode URL components and query values.
Convert readable text and Unicode escape sequences.
Inspect UTF-8 bytes or restore text from UTF-8 hex.
Decode JWT claims and inspect common time-based fields.
Convert Unix timestamps and calendar dates in either direction.
Generate SHA family digests from text.
Generate HMAC signatures from a message and shared secret.
Generate and compare MD5 checksums for text or files.
Inspect the components and query parameters of an absolute URL.
Look up the standard meaning of an HTTP response status.
Generate random UUID v4 values or time-sortable ULIDs.
Turn common cURL requests into JavaScript Fetch or Axios code.
Extract nested JSON values with JSONPath expressions.
Test regular-expression matches, flags and capture groups.
Compare two text blocks and highlight line-level differences.
Measure the size and readability of mixed-language text.