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Convert Unix timestamps to human-readable dates and vice versa

Countdown timer to a specific Unix timestamp

Generate UUID v4, v7, ULID, and nanoid identifiers

Validate UUID format and detect version

Encode text to Base64 with URL-safe variant option

Decode Base64 strings to plain text

Encode text for safe use in URLs

Decode percent-encoded URL strings

Convert text to hexadecimal representation

Convert hexadecimal strings back to text

Escape HTML entities for safe display

Unescape HTML entities back to characters

Decode and inspect JSON Web Tokens with expiry status

Generate SHA-256, SHA-1, and MD5 hashes simultaneously

Generate strong random passwords with customizable options

Test regular expressions with live highlighting and capture groups

Build and explain cron expressions visually

Convert between HEX, RGB, and HSL color formats

Pretty-print and validate JSON data

Compare two texts and highlight differences