Developer Tools
Regex Tester
Test regular expressions with live highlighting and match details
Regular Expression Testing
Regex Pattern
Flags
Test Text
How to Use Regex Tester
1.
Enter Pattern
Type your regular expression pattern with proper syntax
2.
Add Test Text
Enter text you want to test the pattern against
3.
View Matches
See all matches highlighted with match details
Regex Tester Features
Full Regex Support
Supports all JavaScript regex features and flags
Real-time Testing
Test patterns instantly as you type
Save Test Cases
Save and reuse common regex patterns
Frequently Asked Questions
Q: What regex flags are supported?
A: We support global (g), case-insensitive (i), multiline (m), and dotall (s) flags. You can combine multiple flags.
Q: Why isn't my regex working?
A: Check for proper escaping of special characters. Remember that backslashes need to be escaped in JavaScript regex patterns.
Q: Can I test complex patterns?
A: Yes! This tester supports all JavaScript regex features including lookaheads, lookbehinds, capturing groups, and quantifiers.
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Regex Tester
Test regular expressions with live highlighting and match details
Regular Expression Testing
Regex Pattern
Flags
Test Text
How to Use Regex Tester
1.
Enter Pattern
Type your regular expression pattern with proper syntax
2.
Add Test Text
Enter text you want to test the pattern against
3.
View Matches
See all matches highlighted with match details
Regex Tester Features
Full Regex Support
Supports all JavaScript regex features and flags
Real-time Testing
Test patterns instantly as you type
Save Test Cases
Save and reuse common regex patterns
Frequently Asked Questions
Q: What regex flags are supported?
A: We support global (g), case-insensitive (i), multiline (m), and dotall (s) flags. You can combine multiple flags.
Q: Why isn't my regex working?
A: Check for proper escaping of special characters. Remember that backslashes need to be escaped in JavaScript regex patterns.
Q: Can I test complex patterns?
A: Yes! This tester supports all JavaScript regex features including lookaheads, lookbehinds, capturing groups, and quantifiers.