Frequently Asked Questions
How do I use the Regex Pattern Library?▼
Browse or search through 50+ categorized regex patterns. Click "Copy" to copy any pattern to your clipboard, "Test in Regex Tester" to open it in our live tester, or use the inline tester to try it against your own input right on the page. Bookmark your favorites for quick access later.
Are these regex patterns compatible with all programming languages?▼
The patterns use JavaScript regex syntax, which is broadly compatible with most languages including Python, Java, C#, PHP, Ruby, and Go. Some advanced features like lookbehinds may have limited support in older JavaScript engines. Always test patterns in your target language before production use.
Can I save my favorite regex patterns?▼
Yes! Click the bookmark icon on any pattern to save it as a favorite. Your bookmarks are stored locally in your browser using localStorage and persist between visits. Use the "Favorites" filter tab to quickly access all your saved patterns.