Regex Tester & Reference — regex.ximg.app

Regex Tester

Live match highlighting, group extraction, and human-readable descriptions

Pattern

Enter a pattern above to see a plain-language description.

Test String

Match Highlights

Capture Groups

Color-coded group extraction — each group highlighted differently in the text

Pattern

Test String

Highlighted (color per group)

Group Table

Regex Replace

Live replacement preview with $1, $2 backreference support

Pattern

Replacement

Test String

Original (matches highlighted)

Result after replacement

Generated JavaScript

Regex Reference

Click any token to insert it into the Tester. Click a pattern card to load it.

Character Classes

Anchors

Quantifiers

Groups & Lookaround

Flags

Common Patterns — click to load into Tester