Advanced Find & Replace

Advanced Find and Replace searches a block of text for a word, phrase or pattern and replaces every match with the text you choose. It supports regular expressions for complex patterns, shows a live match count, and highlights matches in a preview, so you can see exactly what will change before you apply the replacement.

To use it, paste your text, enter the search term and the replacement, and review the highlighted matches first. For a simple word swap, a plain search is enough. For patterns such as dates, codes or repeated formatting, a regular expression can match many variations at once, but test it on a small sample first, because one wrong pattern can change far more than you intended. Replace in stages when the text is long, and keep the original safe until you have checked the result.

Be careful with words that appear inside other words. Replacing a short term without word boundaries can alter unrelated words that happen to contain it, and replacing in a case-insensitive way can change capitalisation you wanted to keep. Read the preview match by match for important documents.

One honest limitation: the tool edits the text you give it, in your browser. It does not track changes across files, and it cannot undo a replacement after you copy the result elsewhere, so work on a copy for anything important.