Regex Tester

Test and debug regular expressions with real-time matching, highlighting, and validation. All processing happens in your browser for complete privacy and security.

Real-time Testing

Test regex patterns against text with instant results and highlighting

Pattern Validation

Validate regex syntax and catch errors before testing

Match Details

View detailed match information including groups and positions

Privacy & Security

All regex testing happens locally in your browser. No data is sent to our servers, ensuring complete privacy and security of your text and patterns.

Regular Expression Pattern

Valid

Regex Flags

Sample Patterns

Test Text

Sample Texts

Highlighted Matches

No text to highlight

Match Details (0 matches)

No matches found