Regex Tester & Debugger

Developer Utilities

Test regular expressions with real-time colored match highlighting, capture group inspection, and replacement preview.

Quick Presets

Regular Expression Pattern/[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}/gm

Test String (Editable)

Live Match Highlighting2 Match(es)

Merhaba! ToolsApp ile iletişime geçmek için toolsappwebsite@gmail.com veya destek@toolsapp.online adreslerini kullanabilirsiniz.

Match Breakdown

1toolsappwebsite@gmail.com

Pos: 44

2destek@toolsapp.online

Pos: 75

Text Replacement (Substitute)

Merhaba! ToolsApp ile iletişime geçmek için veya adreslerini kullanabilirsiniz.

How to Use Regex Tester & Debugger

Enter Regex Pattern

Type your regular expression pattern and select flags.

Paste Test Text

See matches highlighted in real time with distinct colors.

Inspect Matches

View position indices, capture groups, and substitution preview.

Privacy Guarantee:All computations, transformations, and file processing occur 100% locally in your browser via client-side JavaScript. Your sensitive data is never uploaded or logged on any remote server.

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