Free browser-native developer tools. No data leaves your device.
Generate realistic fake data for testing.
Pro: Bulk export & saved schemas
Format, validate, and explore JSON.
Pro: JSON diff & schema validation
Test and debug regular expressions.
Pro: Export snippets & saved patterns
Convert timestamps across time zones.
Pro: Batch conversion & custom formats
Generate placeholder text instantly.
Base64, URL encode, and more.
Pro: File upload & hash generation
Convert between number bases.
Pro: Bitwise ops & IEEE 754 float
Convert Hex, RGB, HSL, and CMYK.
Pro: Color blindness sim & palettes
Compare two blocks of text.
Pro: JSON-aware diff & file upload
Generate secure random passwords.
Pro: Passphrases & team vault
