How high a uniqueness score do I need?

For SEO purposes content should have at least 85-90% uniqueness. Below 80% increases the risk of Google seeing the content as duplicate. For important pages like landing pages and pillar pages you should aim for 95%+. The tool gives you a clear indication of whether the score is acceptable or if rewriting is necessary.

Can the tool detect AI-generated content?

Yes — the tool identifies patterns typical of AI-generated text such as repetitive sentence structures, generic phrasings and lack of specific details. This is important because AI-generated content often resembles other AI-generated content which can trigger Google's duplication filters.

What about internal duplication between own pages?

The tool focuses on external duplication against content on the web. For internal duplication between your own pages we recommend Cannibalization Checker which is specifically designed to identify and resolve internal duplication issues.

How often should I run plagiarism checks?

Run checks on all content before first-time publishing — especially AI-generated content and content from external contributors. For existing content we recommend a quarterly check of the most important pages to catch cases where others have copied your content.

SEO Analysisstarter

Plagiarism Check Basic

What it does

Checks text for potential plagiarism and similarity with existing content on the web.

Duplicate content destroys rankings and credibility — but most discover it too late

Google penalizes duplicate content with lower rankings or complete deindexing. When you publish text that's too similar to existing content — whether it's unintentional copying, AI-generated text reusing common phrasings, or content from freelancers who recycled material — you risk serious SEO consequences. The problem is that duplication is often invisible to the naked eye. Two texts can be 80% similar without it being obvious when reading. Without systematic checking before publishing you can unknowingly sabotage your own visibility.

Google can deindex pages with too high similarity to existing content — even if copying was unintentional
AI-generated content often reuses common phrasings and structures already found on the web
Freelancers and content producers may deliver recycled material without your knowledge
Internal duplication between your own pages cannibalizes rankings and confuses search engines

Check text for plagiarism and duplication before publishing — quickly and easily

Plagiarism Check Basic analyzes your text against existing content on the web and identifies potential similarities. The tool gives you a uniqueness score, highlights problematic paragraphs and shows which sources the text resembles. You get a clear overview of what needs rewriting before publishing — ensuring you avoid duplication penalties and that your content is genuinely unique.

Uniqueness score: get a percentage score showing how unique your content is compared to existing content on the web
Paragraph highlighting: problematic paragraphs with high similarity are clearly marked so you know exactly what needs rewriting
Source identification: see which websites the text resembles — useful for understanding if similarity is coincidental or problematic
AI content check: identifies patterns typical of AI-generated text that may be flagged as duplicate by search engines

Features

Uniqueness score: percentage assessment of text uniqueness with detailed breakdown per paragraph and section
Source comparison: identifies specific websites and pages the content resembles with similarity percentage per source
AI pattern detection: recognizes phrasings and structures typical of AI-generated content that may trigger duplication filters
Rewriting suggestions: provides concrete suggestions for how problematic paragraphs can be rephrased to increase uniqueness

How it works

Paste the text you want to check — Plagiarism Check Basic analyzes the content against a database of existing web content
Get a uniqueness report with score, highlighted paragraphs and identified sources — see exactly where problems lie
Rewrite the highlighted paragraphs and re-run the check to confirm the content is now sufficiently unique for publishing

Use cases

Content teams using AI tools for text production — check all AI-generated content before publishing to avoid duplication penalties
Companies using freelancers — verify that delivered content is original and not recycled from other assignments
SEO teams updating existing content — ensure rewritten content is sufficiently different from original sources

Why use Plagiarism Check Basic?

In an era where AI-generated content is exploding plagiarism checking is no longer optional — it's a necessity. Google is getting increasingly better at identifying duplicate and low-quality content and the consequences of publishing content too similar to existing material can be dramatic. A single page with duplicate content can drag down your entire site's authority.

Plagiarism Check Basic makes it easy to verify content uniqueness before publishing. Instead of relying on gut feeling you get an objective score and concrete markings of problematic areas. This is especially valuable when working with AI tools or external content producers where you don't have full control over the production process.

For Nordic businesses this is extra relevant because the Nordic content market is smaller — meaning similarities between content are discovered faster by search engines. Plagiarism Check Basic gives you the confidence you need to publish with assurance.

FAQ

How high a uniqueness score do I need?: For SEO purposes content should have at least 85-90% uniqueness. Below 80% increases the risk of Google seeing the content as duplicate. For important pages like landing pages and pillar pages you should aim for 95%+. The tool gives you a clear indication of whether the score is acceptable or if rewriting is necessary.
Can the tool detect AI-generated content?: Yes — the tool identifies patterns typical of AI-generated text such as repetitive sentence structures, generic phrasings and lack of specific details. This is important because AI-generated content often resembles other AI-generated content which can trigger Google's duplication filters.
What about internal duplication between own pages?: The tool focuses on external duplication against content on the web. For internal duplication between your own pages we recommend Cannibalization Checker which is specifically designed to identify and resolve internal duplication issues.
How often should I run plagiarism checks?: Run checks on all content before first-time publishing — especially AI-generated content and content from external contributors. For existing content we recommend a quarterly check of the most important pages to catch cases where others have copied your content.

Try Plagiarism Check Basic free