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PlagiarismCheck.org

plagiarismcheck.org

WebAPIBrowser extension
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Spec score 7.7 #16 of 26 in AI Plagiarism Checkers

What it is

PlagiarismCheck.org is a browser-based service for checking text originality, verifying authorship, detecting AI-generated writing, and improving grammar, spelling, and punctuation. Users can check two pages free, while one-time page bundles start with Basic at 5.99 USD for 20 pages, Light at 9.99 USD, Standard at 25.49 USD, and Premium at 45.49 USD. The checker looks for exact matches, substitutions, and rearranged wording or sentence structure. Results are interactive and reports can be downloaded as PDFs. Integrations include Moodle, Google Classroom, Canvas, Blackboard, and a Google Docs add-on. The company says uploaded writing remains confidential and is not stored in its database. Institutional plans serve schools, higher-education and research institutions, and businesses. The API supports English text only, with submissions of at least 80 characters. The site claims 99% accuracy for detecting slight AI signs and lists email and 24/7 phone support.

Spec sheet

Integrations
Listed integrations include Moodle, Google Classroom, Canvas, Blackboard and a Google Docs add-on.Read 1 Oct 2026 · plagiarismcheck.org
Support
The company lists support by email and a 24/7 phone number.Read 1 Oct 2026 · plagiarismcheck.org
Founded
2011Read 28 Sep 2026 · plagiarismcheck.org
Academic features
Higher-education customers get grammar, spelling and punctuation checking, AI detection and authorship verification.Read 1 Oct 2026 · plagiarismcheck.org
AI detection
The site claims 99% accuracy in detecting even slight signs of AI.Read 1 Oct 2026 · plagiarismcheck.org
API limit
The API currently supports only English text and requires submitted text to be at least 80 characters.Read 1 Oct 2026 · plagiarismcheck.org
Browser access
PlagiarismCheck.org is browser-based and requires no installation.Read 1 Oct 2026 · plagiarismcheck.org
Company history
PlagiarismCheck.org says it was created in 2011 as an assistance tool for college students and teachers.Read 1 Oct 2026 · plagiarismcheck.org
Core purpose
The service checks text originality, verifies authorship, detects AI-generated content and helps improve writing.Read 1 Oct 2026 · plagiarismcheck.org
Data handling
The company says it does not keep uploaded writings in its database and that uploaded texts remain confidential.Read 1 Oct 2026 · plagiarismcheck.org
Detection capabilities
The checker detects exact matches, substitutions and rearrangements in word order and sentence structure.Read 1 Oct 2026 · plagiarismcheck.org
Free checking
Users can check 2 pages for free.Read 1 Oct 2026 · plagiarismcheck.org
Institutional users
Organizational plans target K-12 schools, higher-education institutions, research institutions and businesses.Read 1 Oct 2026 · plagiarismcheck.org
Reports
The product provides interactive results and downloadable reports.Read 1 Oct 2026 · plagiarismcheck.org
Usage reach
The homepage reports more than 1,000,000 users and more than 21,000,000 texts checked for plagiarism.Read 1 Oct 2026 · plagiarismcheck.org

Plans and prices

Basic $5.99, paid once No monthly fees; pay for checked pages 20 pages Read 1 Oct 2026 · plagiarismcheck.org
Light $9.99, paid once No monthly fees; pay for checked pages Read 1 Oct 2026 · plagiarismcheck.org
Standard $25.49, paid once No monthly fees; pay for checked pages Read 1 Oct 2026 · plagiarismcheck.org
Premium $45.49, paid once No monthly fees; pay for checked pages Read 1 Oct 2026 · plagiarismcheck.org
Advanced Priced on request Request quote Institutional web-based account · public-resource searching · Google Classroom, Moodle and Canvas integration · personal institutional archive · Google Docs add-on · 99.99% uptime · Fingerprint authorship verification · grammar checker · closed-depository and library searching · VIP support · custom features Read 1 Oct 2026 · plagiarismcheck.org
Pro Priced on request Request quote Institutional web-based account · public-resource searching · Google Classroom, Moodle and Canvas integration · personal institutional archive · Google Docs add-on · 99.99% uptime · Fingerprint authorship verification · grammar checker · closed-depository and library searching · VIP support · custom features Read 1 Oct 2026 · plagiarismcheck.org

Every PlagiarismCheck.org plan and price →

Strong points and limits

Strong points

  • Two pages available for free checking
  • Interactive results with PDF exports
  • LMS and Google Docs integrations
  • Uploaded writing said not stored
  • Authorship and AI detection

Limits

  • API accepts English text only
  • API submissions require 80 characters
  • Paid bundles have page limits
  • Institutional pricing requires a quote

Who it suits

It suits students, educators, institutions, researchers, businesses, and developers needing browser, integration, or API-based originality checks. Institutional users can add authorship and writing checks.

Verdict

PlagiarismCheck.org covers originality, authorship, AI detection, and writing checks across browser, integrations, and API access. Buyers should account for the API language and length limits and the separate institutional quote process.

Where Specifiction places it

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