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Cron Expression Generator
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Regex Tester
Test regular expressions live against sample text with flags, match details, and replace preview.
UUID Generator
Generate RFC 4122 UUID v4 identifiers in bulk with optional uppercase and hyphen formatting.
URL Encoder / Decoder
Encode or decode URL strings with encodeURI or encodeURIComponent, entirely in your browser.
Base64 Encoder
Encode UTF-8 text to Base64 instantly in your browser with byte-size stats.
Base64 Decoder
Decode Base64 strings back to UTF-8 text instantly in your browser with byte-size stats.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text instantly in your browser.
Cron Expression Generator
Build Unix cron schedules with presets, custom fields, validation, and plain-English explanations.
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