Developer Tools

Generate single or batch RFC-4122 compliant UUID v4 codes.

Generate highly secure, random passwords with custom complexity rules.

Decode JSON Web Tokens (JWT) payload, header, and signature instantly.

Calculate cryptographic hashes: MD5, SHA-1, SHA-256, SHA-512 from string.

Generate custom QR codes for URLs, WiFi, texts, contact cards, and download.

Test JavaScript regular expressions against target text with matches highlighting.

Convert epoch timestamps to readable date-times and vice versa.

Generate placeholder lorem ipsum paragraphs, words, list items, or sentences.

Compare two text contents side-by-side and highlight additions/deletions.

Interactive color spectrum wheel to copy HEX, RGB, HSL, and CMYK formats.

Convert HEX codes to RGB/RGBA formats and vice versa.

Build cron schedule expressions visually with human-readable explanations.