Detect Repeated Sentences
Find and remove identical sentences to clean up your writing.
Analysis Stats
Actions
Keeps the first instance, removes the rest.
eliminate Redundancy. Eliminate Redundancy.
See what I did there? Repeating the same sentence twice is annoying to read and signals poor editing. The Detect Repeated Sentences tool is designed to instantly scan your essays, emails, or reports and highlight accidental duplicates so you can fix them before hitting publish.
Why Clean Your Text?
Deep Scan
Finds exact sentence matches across long documents.
Auto-Remove
Delete all duplicate copies with one click.
Smart Match
Detects duplicates even if capitalization differs.
SEO Audit
Prevent "duplicate content" penalties from Google.
How it Works
1. Paste Content
Copy your text draft into the input box.
2. See Highlights
Any sentence appearing >1x lights up in red.
3. Remove
Click to keep only the first unique instance.
Before & After
Frequently Asked Questions
Why is repeating sentences bad?
Repetitive writing bores readers and looks unprofessional. In an SEO context, repeating the exact same sentence can be seen as 'keyword stuffing' or low-quality content by search engines.
Does this tool find repeated words?
No, this specific tool looks for full repeated sentences (e.g., 'The sky is blue.' appearing twice). If you need to find repeated words, use our Word Frequency Counter.
Can it remove duplicates automatically?
Yes! Just click the 'Remove All Duplicates' button. The tool will keep the first instance of every sentence and delete all subsequent repetitions.
Does it ignore capitalization?
Yes, by default 'Ignore Capitalization' is checked. This means 'Hello world' and 'hello world' will be treated as the same sentence.
Is it useful for coding?
It can be! If you have a list of configuration lines or data entries and need to ensure uniqueness, this tool works perfectly.
How does it handle punctuation?
It considers punctuation as part of the sentence. 'Stop.' and 'Stop!' would be considered different sentences unless you remove the punctuation first.
Is there a limit to the text size?
The tool runs efficiently in your browser and can handle very large documents, essays, or chapters without issue.
Is my data private?
Completely. The detection happens locally in your browser using JavaScript. No text is ever sent to our servers.
Can I copy just the unique list?
Yes. Once you click 'Remove All Duplicates', the text box will update to show only unique sentences, which you can then copy.
Does it work with other languages?
Yes, it works with any language that uses standard punctuation (periods, question marks, exclamation points) to separate sentences.