Merging notes from multiple sources, or cleaning up a document that's been edited and copy-pasted repeatedly, can leave the same sentence appearing more than once — sometimes word-for-word, other times just differing by whitespace or capitalization.
This tool splits your text into individual sentences, then removes any sentence that's a repeat of one already kept, comparing them in a normalized way (ignoring case and extra spacing) so near-identical repeats are caught too.
This is useful for cleaning up merged documents, deduplicating notes pulled from several sources, or catching accidental repetition in a long piece of writing before final editing.
Because everything runs locally in your browser, results appear instantly and nothing you type or upload is ever sent to a server.
Bookmark this page if you expect to use this tool regularly — it loads fast and behaves the same way every time, with no account needed.
This kind of task shows up constantly in everyday writing, coding, design, and admin work, which is exactly why a dedicated, focused tool saves so much back-and-forth.
A tool that does one job well, without a cluttered interface or unrelated features competing for attention, tends to be faster to use than a heavier all-in-one app.
If you find yourself needing this conversion or calculation often, keeping this page open in a tab is usually faster than digging through a bigger software suite's menus.
Because there's no sign-up or installation step, you can jump straight from search result to working tool in a couple of seconds.
Frequently asked questions
Does this catch sentences that are only slightly different in wording?
No, it catches exact repeats (ignoring case and spacing differences), not sentences that convey the same idea with different wording — true paraphrase duplicates would need manual review.
Does it preserve the original sentence order?
Yes, kept sentences remain in their original order — only later repeats of an already-seen sentence are removed.