Validate a JSON string. Returns parsed object or detailed error.

Pretty-print or minify a JSON string.

Encode a string to base64.

Decode a base64 string.

Generate hash (md5, sha256, sha512) of input text.

Generate a UUID (v4 or v7).

Parse a URL into components (scheme, host, path, params, etc.).

Test a regex pattern against text and return all matches.

Convert Markdown to HTML.

Convert HTML to Markdown.

Compute text statistics: word count, char count, sentences, reading time.

Generate a URL-safe slug from text.

Convert a datetime between timezones/formats, including Unix timestamps.

Parse a cron expression: human-readable description + next N run times.

Compute a unified diff between two texts.

Convert CSV text to a JSON array of objects.

Convert a JSON array to CSV text.

Decode a JWT payload without verification (inspection only).