Regex Tester
Regular Expression Pattern
//gm
Test String
Match Result0 matches
Results will appear here...
How to Use
- STEP 1
- Enter a regular expression pattern and select flags.
- STEP 2
- Type or paste the text you want to test in the 'Test String' area.
- STEP 3
- Matches will be highlighted in real-time, and details will appear on the right.
Notes
- This tool uses the JavaScript regular expression engine (native to your browser).
- All processing happens client-side; no data is sent to any server.
- Extremely long text or complex patterns may cause browser lag.
Tips
1
Remove the 'g' (Global) flag to match only the first occurrence.
2
Use the 'i' (Insensitive) flag to ignore case sensitivity.
3
Common patterns: `\d+` (digits), `[a-z]+` (lowercase letters), `^` (start of line), `$` (end of line).
FAQ
QUESTION 1
Is this compatible with PCRE (PHP, etc.)?
No, it relies on JavaScript regex syntax. Some advanced features (like recursive patterns) may not be supported.
QUESTION 2
Is my data saved?
No, all input data is processed locally in your browser and is never transmitted externally.