Regex Tester
- 01Input
- 02Process
- 03Result
Test string
Live Matching
Matches as you type, with all results highlighted
Common Presets
Built-in patterns for Email, URL, IP, and more
Capture Groups
Parses both named and numbered capture groups
Capabilities, limits, and privacyexpand_more
Input
a regular expression, flags, and test text
Output
match positions, groups, and highlights
Processing
Processed locally in the browser. Account, quota, file-size, and processing-time requirements follow the current page.
Important limit：It uses browser JavaScript regex syntax; features from other regex engines may not be compatible.
Privacy：Core input and output are processed in the current browser. Avoid leaving sensitive content on shared devices; clear the page and close the tab when finished.
Frequently asked questions
Answers reflect the current capability and limits of this WorkTool page.
What input does Regex Tester accept?
Regex Tester accepts a regular expression, flags, and test text.
What does Regex Tester produce?
It produces match positions, groups, and highlights. It uses browser JavaScript regex syntax; features from other regex engines may not be compatible.
Where is data processed by Regex Tester?
Processed locally in the browser. Core input and output are processed in the current browser. Avoid leaving sensitive content on shared devices; clear the page and close the tab when finished.
