Debugging tools

Debugging helpers for regex tests, JWT claims, timestamps, cron schedules, UUIDs, and SHA-256 hashes.

Inspect tokens, timestamps, regex matches, schedules, UUIDs, and hashes while debugging small developer tasks.

Use as a quick workbench

These pages are useful when a copied value needs immediate interpretation before it goes into code, QA notes, or support context.

Featured tools

Regex Tester
Test JavaScript regex matches against sample text.
URL Regex Tester
Test a URL-matching regex against copied links and notes.
Log Regex Tester
Test regex patterns against copied log lines and event text.
JWT Decoder
Decode a JWT header and payload in the browser.
JWT Expiration Checker
Decode JWT exp and iat claims while debugging token timing.
Unix Timestamp Converter
Convert Unix seconds, milliseconds, or date strings.
JavaScript Timestamp Converter
Convert JavaScript millisecond timestamps into readable dates.
Cron Expression Parser
Break down a five-field cron expression into fields.
UUID Generator
Generate random UUIDs for testing and sample data.
SHA256 Checksum Generator
Generate a SHA-256 checksum from pasted text for comparison.

Site trust and freshness

Last reviewed: 2026-05-21. DevQuickTools keeps public tool pages, sitemap, robots policy, and AI discovery files reviewed for search and answer-engine access.