Regex Tester
A simple, secure, and real-time tool to test and debug your regular expressions. All processing is done client-side.
Test Your Regular Expression
Result
Matches Found (0)
No matches found.
Why Use Our Regex Tester?
Live Matching
See results instantly as you type your pattern and test string.
100% Client-Side
Your data is processed in your browser and is never uploaded.
Flag Support
Easily toggle global (g), case-insensitive (i), and multiline (m) flags.
Match Highlighting
Visually identify all matches directly within your test string.
How It Works
1
Enter your regular expression pattern in the first input field.
2
Type or paste the text you want to test in the 'Test String' area.
3
Select the desired flags (g, i, m) using the checkboxes.
4
The 'Result' and 'Matches' sections will update in real-time.
5
Review the highlighted text and the list of matches found.