Regex Tester

Enter a regular expression pattern (without the surrounding slashes), specify flags like 'g' for global matching or 'i' for case-insensitive matching, then paste your test text. Matches update live and show the matched text along with its position in the string.

'g' (global) finds all matches instead of stopping at the first one. 'i' (case-insensitive) ignores letter case. 'm' (multiline) changes how ^ and $ behave across multiple lines. Flags can be combined, for example 'gi' for global, case-insensitive matching.