Free tool
Duplicate & Thin Content Checker
Paste two URLs, two blocks of text, or a mix of both, and check how much they overlap -- plus a word-count and readability breakdown for each.
Why duplicate content is a problem
Search engines aim to show one best result for a given query, not several near-identical pages. When two pages -- yours and someone else's, or even two of your own -- overlap heavily, engines have to guess which one to rank, and often demote or ignore the other entirely. Syndicated content, copied product descriptions, and lightly reworded articles are the most common causes.
Why thin content is a separate problem
Even original content can struggle to rank if there simply isn't enough of it to be useful. Pages under roughly 300 words are often treated as "thin" -- not against the rules exactly, but rarely substantial enough to satisfy a search intent on their own.
How this tool measures overlap
This tool breaks each text into overlapping five-word sequences and checks how many of those sequences appear in both pieces -- a standard technique for spotting near-duplicate text, and far more precise than just comparing topics or keywords. It also runs a Flesch reading-ease estimate on each side, since dense, hard-to-read copy is its own kind of weak content.
Original content and real collaboration
The fix for duplicate or thin content is usually the same: write something genuinely your own, worth reading in full. PressCircle is built around exactly that kind of original publishing -- verified members collaborating with real, on-topic partners instead of syndicating or scraping content to fill space.
Frequently asked questions
What counts as 'thin content'?
Pages with very little substantive text -- this tool flags anything under roughly 300 words as a starting point, alongside a readability score, since both length and clarity affect how search engines and readers judge a page.
How is duplicate content calculated?
The tool compares five-word phrase overlaps (shingles) between the two pieces of content and reports the percentage that match, plus the specific shared phrases, so you can see exactly what's overlapping.
Can I compare two URLs, or does it have to be pasted text?
Either side can be a URL (the tool fetches and extracts the visible text) or pasted text directly -- mix and match as needed.