What is regex validator?

A regex validator is an online tool that allows you to test and validate regular expressions against sample text. It helps developers ensure their regex patterns work correctly before using them in code.

How does regex validator work?

You enter a regular expression pattern and a test string, and the tool highlights all matches in real-time. It also shows capture groups, flags, and provides error messages for invalid patterns.

Is regex validator free?

Yes, our regex validator is completely free to use. There are no hidden charges or subscription fees. You can test as many patterns as you need without any limitations.

How to use regex validator?

Simply type or paste your regex pattern in the input field, add your test string, and the tool will instantly show matches. You can also adjust flags like case-insensitive or global matching.

Is regex validator safe?

Absolutely. Your data is processed locally in your browser and never sent to our servers. We do not store or share any information you enter, ensuring complete privacy and security.

Regex Validator: Test and Validate Regular Expressions Online

say.tools

Text Processing81 Format Converters25 Web & SEO Tools18 Code Utilities94 Security & Crypto7 Financial Calculators37 Math & Stats58 Unit Converters4 Design & CSS13 Image Processing5 Time & Date26 PDF Tools3 Health & Fitness18 General Utilities30 Math Calculators29 Fun & Productivity4

Terms & Conditions

Feedback

All Tools

Regular Expression

Regex is valid!

Test String

Validation Results

Home

Validation Results

Tools

More

Language