Regex Tester

Test regular expressions in real-time with match highlighting

Pattern

Flags

Test Text

Matches: 0

Replace with

Use our free regex tester to test regular expressions in real-time. Enter a pattern and flags (g, i, m), then type your test text. Matches are highlighted with different colors. You can also test string replacement with the replace feature. Perfect for developers, data analysts, and anyone working with pattern matching. All processing is client-side and private.

Replace Result