Regex Tester

Developers build and test email, phone number, and URL validation patterns before embedding them in form logic. Live highlighting instantly confirms which strings match.

Data engineers write regex to extract timestamps, error codes, and request paths from server or application logs. Real test data lets you verify the pattern handles edge cases.

QA engineers test that form field validation regexes accept valid inputs and reject invalid ones. The match count and index details help pinpoint exactly where a pattern fails.

Beginners learn regex interactively by tweaking patterns and watching highlighted matches update in real time. Flag toggles like global and case-insensitive make concepts tangible.

Debug greedy quantifiers, named capture groups, and lookaheads by pasting real production strings as test input. The matches panel shows each capture group value side by side.

Extract specific fields like dates, currency values, or identifiers from unstructured text files. Copy all matched values with one click for use in a spreadsheet or script.