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Writing & Content — Other

Plagiarismdetector.net

Free online plagiarism checker — paste text or upload a file to detect copied content with a percentage score

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plagiarismdetector.net
Verified API available Free tier ~50k monthly visits
What is it Free online plagiarism checker — paste text or upload a file to detect copied content with a percentage score
Pricing Freemium — from $9.99/mo
Free tier Yes
Platform Web Application
API Yes
Best for checking essays and research papers for plagiarism before submission, verifying website content originality to avoid SEO penalties
Domain registered 2010

Data updated Aug. 1, 2026

What does Plagiarismdetector.net do?

Plagiarismdetector.net is a free online plagiarism checker that lets you paste text or upload files to find copied content. It scans your text against billions of web pages and returns a similarity percentage, highlighting matched phrases and linking to the original sources. The tool supports plain text, URLs, and file uploads (PDF, DOCX, TXT), making it easy to check essays, articles, or website copy without signing up.

The checker offers two scan modes: a free quick search for basic checks, and a deeper search available with a paid Pro plan that provides more thorough results. It supports over 10 languages including English, Spanish, French, Arabic, and Hindi. The Pro version also removes ads, allows checking up to 25,000 words per scan, and includes an API for developers. The interface is straightforward — paste your text, click "Check Plagiarism," and get results in seconds.

This tool is most useful for students and teachers who need to verify academic work, content writers checking originality before publishing, and website owners who want to avoid duplicate content penalties from search engines. It's a simple, no-frills plagiarism detector that gets the job done without requiring an account or payment for basic use.

Writing & Content — Other
#academic integrity#content detection#duplicate content checker#free tool#multi-language#plagiarism checker#seo tool

Key features

What makes it stand out
01
Free quick search with no word limit on basic scans
02
Deep search option for thorough plagiarism detection across web sources
03
Supports multiple file uploads (PDF, DOCX, TXT) and URL checking
04
Multi-language plagiarism detection for over 10 languages
05
Detailed reports showing matched sources and plagiarism percentage

Who is Plagiarismdetector.net for?

Who benefits most from this tool
checking essays and research papers for plagiarism before submission
verifying website content originality to avoid SEO penalties
reviewing freelance or outsourced content for duplication

Pricing

Free tier available — start without a credit card

Free

Free
  • Basic scanning
  • Limited word count

BASIC

$9.99/month
$8.0/month billed yearly
  • 120 pages
  • 36,000 words
  • 120 Pages
  • 36,000 Words
  • 0 User Seats
  • Word Rate 3,603 = $1
  • API

Premium

$19.99/month
$27.5/month billed yearly
  • 240 pages
  • 72,000 words
  • 240 Pages
  • 72,000 Words
  • 1 User Seat
  • Word Rate 3,603 = $1
  • API

Pro

$129.99/month

Enterprise

Custom
  • Multi-user packages
  • Institutional support
  • Contact for pricing
money-back guarantee

Trust & presence

Domain Domain registered 2010

Gallery

Click any image to enlarge
Pricing page

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