Regex Tester
Test and debug your Regular Expressions (Regex) in real-time with syntax highlighting and match group analysis.
/
/gi
Quick Examples:
Frequently asked questions (FAQ)
What is a Regular Expression (Regex)?
A Regular Expression is a sequence of characters that defines a search pattern. It is commonly used in programming and search engines to find specific patterns in text, such as validating email addresses, phone numbers, or passwords.
What do Regex Flags mean?
Flags change how a Regex operates. For example, "g" (Global) searches for all matches instead of just the first one, "i" (Case-Insensitive) ignores upper and lower case, and "m" (Multiline) applies rules to each line individually.
Which Regex engine does the tool use?
The tool uses the JavaScript (ECMAScript) Regex engine built directly into your web browser, ensuring maximum processing speed without server communication.
