Dev ToolsJanuary 3, 2026
Regex Tester: Learn and Test Regular Expressions Online
Test your regular expressions in real-time. See matches highlighted instantly with our free online regex tester tool.
Regular expressions (regex) are powerful but tricky. Use our online regex tester to experiment with patterns and see matches in real-time.
What are Regular Expressions?
Regex patterns let you search for text patterns, validate input, find and replace text, and extract data from strings.
How to Use the Regex Tester
- Enter your pattern (e.g., \
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