Plagiarism Checker

Plagiarism Checker Extension - Detect Duplicate Content

Plagiarism Checker by Rankyfy scans any webpage against billions of sources across the web and returns a detailed originality report in seconds — no copy-pasting, no accounts, no waiting.

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95% match — ahrefs.com
67% match — semrush.com
91% match — moz.com
91% match — moz.com
High match Partial Original
Originality
62% Original
Moderate Plagiarism
Original 62%
Plagiarised 38%
Sources 3

Trusted by teams at

Publishers · Educators · SEO Agencies · Journalists · Copywriters
28,000+ Active Users
4.8 ★ Chrome Store
10B+ Sources Indexed
99% Accuracy Rate
Originality Check

Get a Full Originality Report in One Click

Visit any webpage and click the Rankyfy extension. It scans the page text against billions of web sources and returns an originality percentage, matched sources, and a sentence-by-sentence breakdown instantly.

  • Overall originality score out of 100%
  • Exact matched sources with URLs and similarity %
  • Sentence-level highlighting of matched content
  • Works on any publicly accessible webpage
Add to Chrome — Free
example.com/blog/seo-guide — Plagiarism Report
62%
Original
Original
62%
Plagiarised
38%
Sources Found
3
Word Count
1,240
Source Matching

See Every Source That Matches

Rankyfy doesn't just tell you content is plagiarised — it shows you exactly which source it matches, the similarity percentage, and the specific sentences that overlap.

  • Full list of matched sources with URLs
  • Similarity percentage per source
  • Click any source to view the original content
  • Matched sentences highlighted directly on the page
Matched Sources — 3 Found
A
ahrefs.com /blog/seo-basics
95%
4 sentences matched
M
moz.com /beginners-guide
91%
3 sentences matched
S
semrush.com /blog/seo-guide
67%
2 sentences matched
Sentence Analysis

Pinpoint Exactly What's Copied

Rankyfy highlights matched sentences directly on the page in real time — so you can see at a glance which exact lines need to be rewritten, paraphrased, or cited.

  • Sentence-level match highlighting on any page
  • Hover to see the source URL and match score
  • Colour-coded by similarity — red high, amber medium
  • Export annotated report with all matches flagged
Sentence Matches — example.com/seo-guide
# Matched Sentence (truncated) Source Match
1 SEO stands for search engine optimisation… ahrefs.com 95%
2 The goal of SEO is to increase… moz.com 91%
3 Keyword research is the foundation of… semrush.com 67%
4 On-page SEO refers to optimising individual… ahrefs.com 88%
5 Backlinks remain one of the strongest… moz.com 72%
Competitor Check

Check if Competitors Are Copying Your Content

Run a plagiarism check on your own content and compare it against top-ranking competitor pages. Find out if your content has been scraped, copied, or syndicated without credit.

  • Detect if your content has been scraped
  • Find syndicated copies across the web
  • Check competitor pages against your own URLs
  • Export a full duplication report
Originality Comparison — "seo guide"
#1
ahrefs.com
Orig
96%
#2
moz.com
Orig
91%
#7
yoursite.com YOU
Orig
62%
Your content is 38% duplicated — rewrite matched sections to improve trust and rankings.
How It Works

Full Plagiarism Report in Under 30 Seconds

No copy-paste. No accounts. No uploads. Just visit any page and check.

01
Install Extension

Add Rankyfy Plagiarism Checker to Chrome. Free to start — no registration or setup required.

02
Visit Any Page

Navigate to the page you want to check — your own content, a competitor's article, or any URL.

03
Run the Check

Click the extension and Rankyfy scans the page against billions of web sources — results in seconds.

04
Review & Export

Review all matched sources and sentences, then export the full report as PDF or CSV.

Who Is This For?

Built for Anyone Who Values Original Content

Content Writers

Verify your work is 100% original before submitting to clients or publishing on your own site.

Content QA
SEO Professionals

Catch duplicate content issues hurting your rankings and fix them before Google penalises your site.

SEO Health
Educators & Students

Ensure academic integrity — check submissions and research papers for copied content before grading.

Academic
Publishers & Editors

Screen all incoming content for plagiarism before publication to protect your brand's credibility.

Editorial QA
Full Suite

Explore All Rankyfy Extensions

One browser, nine powerful SEO tools. Everything you need to dominate search — built right into Chrome.

Keyword Research

Find high-volume keywords with low competition right from your browser.
Google Maps Scraper

Extract business data from Google Maps results at scale.
Google Search Scraper

Scrape SERP data, titles, and URLs from any Google search.
ON Page SEO

Instantly audit any webpage for on-page SEO issues and opportunities.
Sitemap Generator

Auto-generate and download sitemaps for any website in one click.
Schema Markup Gen

Generate structured data markup for any page without coding.
AI Content Checker

Detect AI-generated content on any page with one click.
Plagiarism Checker

Verify content originality across the web in seconds.

Active
YouTube Extension

Research YouTube keywords, tags, and competitor video data.
FAQ

Plagiarism Checker FAQ

Still have questions? Contact our team →

Yes! You can run up to 10 plagiarism checks per day for free. Pro unlocks unlimited checks, sentence-level highlighting, full source reports, and PDF exports from $9/month.
Rankyfy scans against 10 billion+ indexed web pages, including blog posts, news sites, academic papers, and forum content. The index is updated continuously to catch newly published duplicate content.
Absolutely. Simply visit your own published pages and run the check. Rankyfy will flag any passages that match content elsewhere on the web — whether it's been copied from you or you've accidentally duplicated someone else's wording.
Yes — Rankyfy uses semantic analysis to detect paraphrased content, not just exact matches. Lightly reworded text that retains the same meaning and structure will still be flagged with a reduced similarity score.
Yes. The extension reads the visible text on any publicly accessible webpage — articles, product descriptions, landing pages, blog posts, or any other text-rich content you can open in Chrome.
Protect Your Content. Own Your Originality.

Add Rankyfy to Chrome.
It's Free.

Join 28,000+ writers, SEOs, and publishers who check content originality instantly with Rankyfy.

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