Developer & Data tools

Pretty-print JSON with configurable indentation, sorting and syntax highlighting.

Validate JSON syntax and jump straight to the character that broke it.

Strip every unnecessary byte from JSON before shipping it over the wire.

Flatten an array of JSON objects into a spreadsheet-ready CSV file.

Convert CSV rows into a clean JSON array with automatic type detection.

Encode text or files to Base64 and decode back, with full UTF-8 support.

Percent-encode text for URLs and decode escaped query strings safely.

Inspect JWT header and payload claims, including expiry and issued-at times.

Generate MD5, SHA-1, SHA-256 and SHA-512 digests for text or files.

Generate cryptographically random UUID v4 identifiers in bulk.

Convert JSON to YAML or YAML to JSON with error reporting.

Indent and format XML with a readable tree structure.

Convert XML elements, attributes and repeated children into JSON.

Indent minified HTML with proper nesting for readability.

Remove comments and whitespace from CSS and see the byte saving.

Format SQL queries with uppercase keywords and configurable dialects.

Test regular expressions against sample text and inspect capture groups.

Explain a five-field cron expression and show the next run times.

Search and filter common HTTP status codes and their meanings.

Convert a cURL command into JavaScript fetch() code.