How do I use find and replace with regular expressions?

Our find and replace tool supports regular expressions (regex) for advanced text manipulation. Enable regex mode to use patterns like: \d+ (matches all numbers), \b\w{5}\b (matches 5-letter words), ^start (matches lines starting with 'start'), end$ (matches lines ending with 'end'), A-Z] (matches any uppercase letter). For example, to [replace text online and remove all numbers from a document, find \d+ and replace with nothing. To search and replace email addresses, use the pattern \bA-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b. The [text find and replace tool also offers case-sensitive and whole-word options for precision. Pro tip: Use regex mode for cleaning data, reformatting text, or extracting specific patterns from large documents. All processing is local and private.