Easily test, debug and refine your regular expressions with our free online Regex Tester Tool. Perfect for developers, programmers and anyone working with text patterns.
A Regular Expression (abbreviated as "Regex" or "RegExp") is a special string of characters that defines a search pattern. Instead of searching for an exact text, you can search for abstract patterns, such as "a string of three digits," "a word beginning with a capital letter," or "a valid e-mail address."
Regex is used in almost every programming language for powerful search and replace operations, data validation, and parsing of text. Although the syntax can seem complex, it is one of the most efficient ways to manipulate text. This tool helps you build and debug your patterns.