3 tools
Development Tools
Regex testing, formatting, and general dev utilities.
#development
UUID Generator
Generate RFC 4122 v4 UUIDs in bulk, instantly.
#development
Regex Tester
Test and debug regular expressions against sample text.
#development
Regex Generator
Generate common regex patterns for email, URLs, slugs, and more.
About development tools
Regex testing, formatting, and general dev utilities. These tools run locally in your browser, so you can use them for quick checks during development without sending data anywhere.
FAQ
Are development tools tools free to use?
Yes — every tool on U5F is free, with no account required.
Is my data uploaded anywhere?
No, processing happens locally in your browser tab.