Regex Tester Tool
Test and debug your Regular Expressions in real-time.
Result
Contact us at support@example.com or sales@example.org.
Matches (2)
- support@example.com
- sales@example.org
How to Use the Regex Tester
This tool allows you to test and debug regular expressions (regex) in real-time. As you type your pattern, it instantly highlights all the matches in your test string.
- Enter Your Regex Pattern: Type your regular expression in the first input field. Do not include the starting/ending slashes.
- Set Flags (Optional): Add any flags you need, such as `g` (global search), `i` (case-insensitive), or `m` (multi-line).
- Provide a Test String: In the large text area, enter the text you want to test your regex against.
- Analyze the Results: The tool will highlight all matches in the "Result" box and list them individually in the "Matches" section.
Frequently Asked Questions (FAQ)
Q: What is a regular expression?
A: A regular expression is a sequence of characters that specifies a search pattern. They are a powerful tool used in programming to find, match, and manage text.
Q: What do the `g` and `i` flags do?
A: The `g` (global) flag ensures the regex finds all matches, not just the first one. The `i` (case-insensitive) flag makes the pattern match both uppercase and lowercase letters. These are the two most common flags.
Related Keywords
regex testerregular expressionregex validatordebug regexpattern matchingdeveloper toolsonline regexregex checkertext matching