Developer Tools
5 tools in this category
Base64 Encoder / Decoder
Encode and decode Base64, Base64URL, URL encoding, hex, and HTML entities. File support for images and documents. Runs client-side.
Color Contrast Checker
Check color contrast ratios for WCAG 2.2 AA and AAA compliance with APCA support, color blindness simulation, and auto-fix suggestions.
Cron Expression Builder
Visual cron expression builder with interactive field selectors, common presets, next execution preview, crontab line output, and shareable links.
Regex Tester
Test regular expressions with real-time match highlighting, capture groups, replace mode, and common pattern presets. Runs in your browser.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds, milliseconds, ISO 8601, RFC 2822, and timezone comparison.