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Test and debug regular expressions with real-time matching, syntax highlighting, and detailed pattern explanations.
No matches found
Instantly validate your regex patterns and see syntax errors
Visual highlighting of all matches in your test text
Understand what each part of your regex pattern does
Common regex patterns for emails, URLs, phone numbers, and more
See captured groups and their positions in matches
Copy patterns, matches, and results with one click
Flags modify how the regex pattern behaves. Common flags include 'g' (global - find all matches), 'i' (ignore case), 'm' (multiline), 's' (dotAll), 'u' (unicode), and 'y' (sticky).
Use a backslash (\) before special characters to treat them literally. For example, \. matches a literal dot, while . matches any character.
Parentheses () create capture groups that extract specific parts of a match. You can reference these groups later or see their values in the results.
Use ^ to match the start of a string or line (with multiline flag), and $ to match the end. For example, ^hello matches strings that start with "hello".
Practice with our comprehensive regex tester. Test your patterns, understand the syntax, and improve your text processing skills with real-time feedback.