Developer Utility Tools Online

Quick utilities for everyday debugging—test a regex, build a cron expression, convert epoch time, or generate a QR code for staging links.

Utility pages complement your IDE and terminal rather than replacing them. They shine when you need a visual diff, a human-readable cron description, or a one-off QR for a demo without installing packages.

Regex testers highlight matches in real time—still run the same pattern against representative fixtures in unit tests before deploying to production parsers.

Cron and timestamp tools help when logs use epoch seconds but your brain thinks in local dates. Always confirm timezone and daylight saving when scheduling production jobs.

All dev utilities tools

Regex Tester
Live match highlighting, match list, and line-by-line test strings.
Color Picker
Pick a color and convert between HEX, RGB, and HSL. Copy values or share via URL.
Cron Generator
Build cron schedules with presets or custom syntax. Next run times and share via URL.
QR Code Generator
Create QR codes from text or URLs. Size options, download PNG, share via URL.
Unix Timestamp
Convert epoch time to date or date to timestamp. Seconds and milliseconds.
User-Agent Parser
Parse your User-Agent to browser, OS, and device type. Share via URL.
What is My IP
Check your public IPv4 address instantly. No signup. Copy or share this page.

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