Duplicate Content and SEO: What Google Does and How to Fix It
How Google handles duplicate pages, why ordinary duplication isn't a penalty, where duplicates come from, and how to choose and signal the canonical you want.
Duplicate & Thin Content Finder
Find near-duplicate and very thin pages across your site, with the text that makes them alike.
What this tool does
Crawls a bounded set of pages, compares their main content with shingle-based similarity, groups exact and near duplicates, flags pages with very little unique main content, and checks whether duplicates point to a canonical.
What you get
- Duplicate clusters with similarity scores and shared passages
- Thin pages with their unique word counts
- Canonical handling of each cluster
Scope
Same website, up to 40 pages.
Pages are fetched politely by BacklnkBot, robots.txt is respected, and only public websites can be audited. Every finding shows the evidence it is based on and when it was measured.
Limitations
- • Similarity compares main content text; templates and boilerplate are excluded where they can be detected.
- • Thin is a disclosed Backlnk heuristic: short pages can be exactly right for their purpose.
Frequently asked questions
- Is duplicate content a penalty?
- Google documents that duplicate content is not a penalty in itself; it chooses one version to show. Duplicates can still split signals and waste crawling, which is why the report checks canonicals.
Guides
Learn the topic behind the duplicate & thin content check
More free tools
- llms.txt Generator & ValidatorDraft an llms.txt from your real pages, or check an existing file against the published proposal.
- Entity Signal & Schema CheckerSee the entities your JSON-LD describes — Organization, Person, FAQPage and their sameAs links.
- Answer Snippet ExtractorFind the definitions, steps, lists, tables and summaries a reader — or an answer engine — could quote.
Learn more: Technical SEO guides · On-Page SEO guides