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Developer
8 toolsJSON Formatter / Validator
Format, validate, and minify JSON locally.
JSON ↔ CSV
Convert flat JSON records and CSV with quoted fields.
Base64 Encoder / Decoder
Encode and decode Unicode text with Base64.
Timestamp Converter
Convert Unix seconds or milliseconds to UTC dates.
Random Password Generator
Create a password using browser cryptographic randomness.
Hash Generator
Generate SHA-256, SHA-384, or SHA-512 hashes locally.
Regex Tester
Test a pattern in an isolated worker with a timeout.
Color Contrast Checker
Calculate WCAG contrast for two colors.