Does this regex tester support JavaScript regex flags?

Yes. You can toggle common flags such as global, case-insensitive, multiline, dotAll, unicode, and sticky.

Can I inspect capture groups?

Yes. Each match result includes the match index and any capture group values.

Yes. The preview panel highlights matched segments so you can verify pattern scope quickly.

Validate regex patterns, inspect capture groups, and confirm match scope with highlighted preview.

Regex pattern

g (global) i (ignore case) m (multiline) s (dotAll) u (unicode) y (sticky)

Test text

Ready

Highlighted preview

Matches

Capture groups

Flags

Use regex testing when validating extraction patterns, migration scripts, or text normalization rules.

Capture groups and index data help verify precise matching behavior before code changes.

Use this regex tester online to validate JavaScript patterns, inspect capture groups, and confirm exact match boundaries before shipping code.

Live match highlighting makes it easier to debug extraction logic in migration scripts, log parsing, and form validation rules.