Find & Replace

Find & Replace swaps text for new text with live preview, supporting regular expressions, case sensitivity, and whole-word matching. It is for editors and developers making bulk changes across a block of text.

Repeating the same edit by hand is slow and easy to get wrong. Doing it locally with a live preview shows the effect immediately, and the text never leaves your browser.

1. Paste the text you want to edit.
2. Enter what to find and what to replace it with.
3. Turn on regular expressions, case sensitivity, or whole-word matching if needed.
4. Watch the preview update as you adjust the terms.
5. Copy the edited result.

• Regular-expression support
• Case-sensitive and whole-word options
• Live preview of replacements
• Replaced in the browser

• Renaming a term consistently across a document
• Reformatting data with a regular-expression pattern
• Cleaning up imported text in bulk
• Swapping placeholders for real values

• Use whole-word matching when a term appears inside larger words you must not touch.
• Test a regular expression on a small sample before applying it to everything.
• Check the preview for unintended matches, especially with short search terms.

• Forgetting whole-word matching, so “cat” also changes inside “category”.
• Writing a greedy regular expression that matches more than intended; preview before trusting it.
• Running a case-insensitive replace that alters capitalised words you meant to keep.