What it does
Paste a text, type what to find and what to put in its place, and see the changed text straight away. You can add as many find and replace pairs as you need and they run from the top down. Every place that matches is highlighted in a preview of your original text, and a count tells you how many were replaced for each pair.
By default it looks for the exact letters you typed. Tick Use patterns if you know regular expressions. Your text never leaves your device. To fill the same letter for many people use mail merge, and to remove the usual mess from copied text first use text cleaner.
How to use it
- Paste your text.
- Type the word in Find and its new form in Replace with. Leave Replace empty to delete the word.
- Press Add another pair for more.
- Check the highlights, then press Copy the result.
What each setting does
- Match case: off by default, so “Cat” and “cat” match. Turn it on to match capitals exactly.
- Whole word only: “cat” will not match inside “concatenate”.
- Use patterns: the find box is read as a regular expression. In the replace box, $1, $2 are the bracketed groups and $& is the whole match.
- Use result as my text: puts the result back in the top box so you can run more changes.
Worked example
Text “Cat cat concat” with find “cat”, replace “dog” and whole word on gives “dog dog concat”, with 2 matches. With patterns on, finding (\d+)-(\d+)-(\d+) and replacing with $3/$2/$1 turns 2026-11-10 into 10/11/2026.
FAQs
What if my pattern is wrong? A message says it is not valid and the text is left unchanged.
Why are special signs like a full stop matched literally? Because patterns are off by default. Turn them on to use the full pattern language.
Is my text stored? No.
Where the numbers come from
- Patterns use JavaScript regular expressions (MDN web docs). Everything else is plain find and replace.
Standard scientific values, such as constants, atomic weights and melting points, are facts found in every textbook; we name where ours were checked. If you are an author or publisher and want a value, a credit or a table changed or removed, tell us and we will act quickly.
Last updated 2026-11-10.