Free Duplicate Content Checker
Compare two pages for duplicate content, or scan up to 20 pages of your site for similar content, duplicate titles, meta descriptions and H1s – with clear steps to merge, canonicalise or rewrite.
What is a Duplicate Content Checker?
A duplicate content checker measures how much text two or more pages share. It strips menus, headers and footers, breaks the main content into 5-word phrases and calculates the overlap, so you can see which pages compete with each other in Google.
Duplicate and near-duplicate pages split ranking signals, cause “Duplicate without user-selected canonical” in Search Console and waste crawl budget. This tool checks internal duplicates on your own site. To find copies of your content on other websites, use a plagiarism checker.
What the Duplicate Content Checker checks
Every problem comes with plain-English steps to fix it, and every result is added to your downloadable Technical SEO report.
Similarity score, overlap and shared phrases side by side.
Compares up to 20 pages from your sitemap with each other.
Ignores menus, header, footer and sidebars.
Finds repeated titles, meta descriptions and H1s.
Flags pages with very little unique text.
Merge, canonicalise or rewrite – with the exact steps.
How to use the Duplicate Content Checker
Click Load Example above to see a real result first.
Enter a page URL
Add a second URL to compare two pages, or leave it empty to scan your site.
Click “Check Duplicate Content”
The tool reads the main content of each page.
Read the “Fix first” tab
High-similarity pairs and duplicate titles come first.
Decide per pair
Merge, canonicalise or rewrite – then check again.
Common problems and how to fix them
| Problem | Why it matters | How to fix it |
|---|---|---|
| Near-identical service or city pages | Pages compete and none ranks well. | Add unique local or service details, or merge. |
| Duplicate titles | Google rewrites or ignores them. | Write a unique title for every page. |
| Same meta description everywhere | Lower click-through rate. | Write unique descriptions or let Google choose. |
| Tag and category archives | Many thin near-duplicates. | Noindex thin archives. |
| Print / filter / parameter URLs | Exact copies. | Canonical to the main URL. |
Frequently asked questions
Is there a duplicate content penalty?
No, Google does not penalise normal duplicate content. It picks one version to show and filters the rest, which can be the wrong page and splits your ranking signals.
How much similarity is too much?
Over 80% means the pages are near-duplicates. 50–80% usually means a lot of shared template text. Aim for a clearly unique main section on every page.
Does this check other websites?
No. This tool compares pages on your own site. Use a plagiarism checker to find copies on other domains.
Should I use canonical or 301?
Use a 301 when the duplicate page is not needed anymore. Use a canonical when both URLs must stay accessible.
Why does it read my sitemap?
The sitemap lists your indexable pages, which are the ones that matter for duplicate content. If no sitemap is found, the tool crawls your internal links instead.
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Built and maintained by the AM Digital Marketing Agency SEO team. Last updated: .
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