For Developers

Convert colors between HEX, RGB, HSL and CMYK.

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes.

Test and debug regular expressions in real time.

Minify CSS and JavaScript — remove comments, whitespace and reduce file size.

Convert JSON to CSV and CSV to JSON bidirectionally.

Convert Unix timestamps to human-readable dates and back.

Decode JWT tokens and inspect header, payload and expiry.

Convert numbers between decimal, hex, binary and octal.

Encode and decode HTML entities (& < > etc.).

Convert YAML to JSON and JSON to YAML bidirectionally.

Explain a cron expression in plain English and show next run times.

Generate SEO meta tags, Open Graph and Twitter Card code.

Vygeneruje UTM link z URL a parametrov utm_source, medium, campaign.