Regex Tester

The Regex Tester Tool is a web application designed to help you test and understand regular expressions. It provides a simple interface where you can input a regular expression and a block of text, then see how the regex matches against the text. Here's how it works: Regular Expression Input: Enter your regular expression (regex) into this field. This is the pattern you want to search for in your text. Text to Test Input: Type or paste the text you want to test your regular expression against into this larger text area. Test Regex Button: Click this button to run the test. The tool will then process your regex against the provided text. Output Section: After testing, this section will display the results: Matches: Any substrings in your "Text to Test" that fully match your regular expression will be listed here. Highlighted Text: The original "Text to Test" will be displayed again, but with all the matching parts highlighted, making it easy to visually identify what your regex has found. Error Messages: The Canvas will provide clear error messages if you leave the regex or text fields empty, or if your regular expression has an invalid syntax. This tool is particularly useful for developers, data analysts, or anyone working with text patterns, as it allows for quick experimentation and debugging of regular expressions.