Text Diff Checker
Compare two texts and see what changed
Replace text in bulk, with case-sensitive and whole-word matching
Follow these steps to find and replace text:
All processing happens locally in your browser — your text never leaves your device.
This find and replace tool is particularly useful in these common situations:
Whether you're editing content, cleaning data, or renaming something across a document, this tool handles it instantly.
To get the most out of this tool, keep these points in mind:
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Yes. Toggle "Match case" to only replace text that matches the exact capitalisation you typed, or leave it off to replace regardless of case.
Yes. Enable "Whole word only" to avoid replacing a search term when it appears inside a longer word — for example, replacing "cat" won't affect "category" when this is enabled.
No. All find-and-replace processing happens locally in your browser using JavaScript. Your text is never sent to a server.