Regex Debugger — Visual Step-by-Step Analysis

Visualize step-by-step how your regex engine processes patterns, backtracks, and matches characters.

Regex Pattern

Test Text

• Add a test string to see execution steps

• Use flags to modify pattern behavior

• Navigate through steps with Previous/Next

• View regex structure on the right panel

• Check capture groups in details view

Debugger ready

Enter a regex pattern and test string above to start debugging