Free online developer tools — no login, no install. JSON formatter, regex tester, cron generator, JWT decoder, Base64 encoder, and more.
Our Tools
Cron Expression Generator
Build and validate cron schedules visually.
Regex TesterTest regular expressions with live match highlighting.
JSON FormatterBeautify, minify, and validate JSON instantly.
Base64 Encoder / DecoderEncode or decode Base64 strings with auto-detection.
JWT DecoderDecode JWT tokens and inspect headers, payload, and expiry.
Unix Timestamp ConverterConvert timestamps to dates and back, with live current time.
URL Encoder / DecoderEncode and decode URL strings for safe transmission.
UUID GeneratorGenerate v1 or v4 UUIDs, bulk up to 100 at once.
CSS MinifierMinify CSS and see exact byte savings percentage.
Text Diff CheckerCompare two text blocks with inline diff highlighting.