Regex Tester
About This Tool
YAKOOAITOOLS Regex Tester provides real-time regex pattern matching with highlighted results, helping developers quickly debug and validate regular expressions.
How to Use
- 1Enter the regular expression to test in the regex input box.
- 2Paste the target text to match in the text box.
- 3The tool highlights all matches in real time.
- 4View match details and capture group information.
Key Features
- Completely free with no usage limits
- Runs locally in the browser, no internet needed
- Real-time matching with highlighted results
- Shows match details such as capture groups
- Supports JavaScript regex syntax and flags
Use Cases
1Regex pattern writing and testing
2Data validation rule debugging
3Text extraction pattern verification
4Form input format validation
FAQ
What regex syntax is supported?
Uses JavaScript regex syntax, supporting all JS regex features including g, i, m flags.
Can capture groups be viewed?
Yes. Full matches and detailed capture group information are displayed.
Is there a regex length limit?
No hard limit, but overly complex regex may affect performance. Keep patterns concise.
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