Regex Tester

Test and debug regular expressions in real-time.

Regex Tester

Try regular expressions against sample text.

Pattern

Flags

Matches

alpha@example.com @ 8 beta@test.dev @ 30

Test text

What is Regex Tester?

A Regular Expression (Regex) is a sequence of characters that specifies a search pattern. They are incredibly powerful for string searching, parsing, and data validation, but notoriously difficult to write and debug. Our Regex Tester provides instant visual feedback, highlighting all pattern matches within your target text as you type.

When to use Regex Tester?

Writing input validation rules for emails, passwords, or phone numbers

Extracting specific data points from large log files

Debugging complex search-and-replace patterns before deploying them to code

Learning and practicing regex syntax

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