Regex match inspector
Mistake: Treating a result as valid outside the described scope.
Fix: Inspect JavaScript regex matches and groups; at most 300 matches are displayed.
Archive · Free
Regex match inspector
Test a regular expression against text and inspect matches and positions. Long-running expressions are stopped.
This tool is archived. Recheck its method and dated data before use.
01Enter your values
Runs in your browserRuns offline in your browser. Once the page and required files have loaded, processing needs no internet.
02Regex match inspector
Runs in your browser
How it works
Test a regular expression against text and inspect matches and positions. Long-running expressions are stopped.
Runs in your browser
Discovery source
Your data stays yours
Inputs are processed on this page and are never sent to a server.
About this tool
Use tool ↑Test a regular expression against text and inspect matches and positions. Long-running expressions are stopped.
Inspect JavaScript regex matches and groups; at most 300 matches are displayed.
- Enter your values
- Pattern
- Flags
- Text
- Calculation method
Test a regular expression against text and inspect matches and positions. Long-running expressions are stopped.
- Example scenario · Result
Matches: 4 [0] Small [6] tools [13] Instant [21] answers
Calculation method
- Inspect JavaScript regex matches and groups; at most 300 matches are displayed.
Regex match inspector
- Pattern
- \b\w{4,}\b
- Flags
- g
- Text
- Small tools. Instant answers.
Result
Matches: 4 [0] Small [6] tools [13] Instant [21] answers
Frequently asked questions
How should I interpret the result?
Inspect JavaScript regex matches and groups; at most 300 matches are displayed.
Where does my data go?
Calculations run on your device. Form inputs are not sent to a server.
Terms and definitions
Enter your values
- Pattern
Enter the source text; it is processed locally.
- Flags
Enter the source text; it is processed locally.
- Text
Enter the source text; it is processed locally.
Result
- Result
Inspect JavaScript regex matches and groups; at most 300 matches are displayed.
Calculated from your entries using the method below.
- Pattern
Inspect JavaScript regex matches and groups; at most 300 matches are displayed.
Calculated from your entries using the method below.
- Flags
Inspect JavaScript regex matches and groups; at most 300 matches are displayed.
Calculated from your entries using the method below.
Common mistakes and quick fixes
Limits and key assumptions
- Inspect JavaScript regex matches and groups; at most 300 matches are displayed.