Find and Replace

Whole Word mode only matches the search term when it appears as a complete word, not as part of a longer word. Searching for "cat" with Whole Word on will match "cat" but not "category", "concatenate", or "cats". It uses word boundary matching under the hood.

Regex mode lets you use JavaScript regular expression syntax to match complex patterns. For example: [0-9]+ matches any number, \b\w+@\w+\.\w+\b matches email addresses, \s+ matches one or more whitespace characters. You can also use capture groups in the replace field: $1 inserts the first captured group.

Leave the Replace With field empty and click Replace All. Every matched occurrence will be deleted from the text. This is useful for removing specific words, unwanted characters, or extra whitespace patterns.

Yes, in Regex mode. Write a pattern with parentheses to capture groups, then use $1, $2, etc. in the replacement field. For example, find "(\w+)\s(\w+)" and replace with "$2 $1" to swap two words. This is the most powerful feature for restructuring text.

In Regex mode, use \n for newline and \t for tab. To match the literal backslash, use \\. To match a period, use \. (dot without backslash matches any character). Enable Case Sensitive if your pattern is case-specific.

Yes. Use Ctrl+Z (or Cmd+Z on Mac) in the result text area to undo the last change. You can also copy your original text before replacing, or paste it back into the source field and start over.

No. All find and replace processing runs locally in your browser using JavaScript. Your text never leaves your device, so it is safe to paste source code, private documents, or any sensitive content.