Safer patterns
Validate before shipping.
Free SEO tool
Regex Tester
Test regular expressions against sample text and inspect match results.
- Pattern
- Flags
- Matches
Regex Tester
Test a regular expression against sample text and inspect matches in JSON form.
Advantages of Testing Regex
Regex bugs are costly. Live testing prevents bad validation rules and fragile parsers.
Faster iteration
Tune flags and groups quickly.
Clear matches
See indexes and capture groups.
Input hygiene
Protect forms and scrapers.
AI parsing aid
Prototype extraction patterns.
Local testing
No sample upload required.
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