Duplicate Content & Plagiarism Checker
Check your content against the internet for potential duplicates, or compare two pieces of content directly — free, no signup required.
Free & unlimited checks. We pick a sample of distinctive sentences from your text and search the web for exact matches — a quick way to spot copied content.
Why Check for Duplicate Content?
Duplicate or copied content can hurt your search rankings, confuse readers about the original source, and create legal issues if it's plagiarized.
Protect Your Original Work
Quickly check if your content has been copied elsewhere, or compare a draft against existing pages before publishing.
Avoid SEO Penalties
Search engines may rank duplicate content lower. Spotting overlap early helps you keep your pages unique and competitive.
Improve Content Quality
Comparing your draft to source material helps you rewrite and add original insights instead of close paraphrasing.
Frequently Asked Questions
Is this tool really free?
Yes — both the web-wide check and the side-by-side comparison are completely free with no signup or usage limits.
Does "Check Against the Internet" scan the whole web?
It searches the web for a sample of distinctive sentences from your text and reports any exact matches found. It's a quick best-effort check, not an exhaustive line-by-line scan of every page on the internet.
What does "Compare Two Texts" do?
It directly compares two specific pieces of text or page URLs against each other and shows an overall similarity percentage plus the matching sentences — useful for checking a draft against a known source.
Why did a match show up for a common phrase?
Very common sentences, quotes, or boilerplate text can appear on many pages by coincidence. Use your judgment — a single short match doesn't necessarily mean plagiarism.
Can I paste a URL in the "Compare Two Texts" tab?
Yes — paste a full page URL (starting with http:// or https://) in either box and the tool will fetch and extract the visible text automatically.
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