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PlagiarismCheck.org
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 paid page bundles are one-time purchases: Basic costs $5.99 for 20 pages, Light costs $9.99, Standard costs $25.49, and Premium costs $45.49. The checker looks for exact matches, substitutions, and rearranged word order or sentence structures. Interactive results can be exported as PDF reports. Listed 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 target K-12, higher-education, research, and business users. Its API supports English text only and requires at least 80 characters. The site claims 99% AI-detection accuracy.
For and against
For
- Two pages can be checked for free
- Interactive results with PDF export
- Moodle and classroom integrations
- Uploaded writing is not retained
- Authorship and AI detection included
Against
- API supports English text only
- API submissions require 80 characters
- Paid bundles charge per purchase
- Institutional plans require a quote
The verdict
PlagiarismCheck.org combines plagiarism matching, AI detection, authorship checks, and writing corrections in a browser service. Its free allowance and integrations are useful, while API language and length limits matter for automated workflows.
Who it suits
It suits students, educators, institutions, researchers, and businesses needing browser-based originality or authorship checks. API users must work with English submissions of at least 80 characters.
Plans and prices
Basic
20 pages
Read 1 Oct 2026 · plagiarismcheck.org
Light
Read 1 Oct 2026 · plagiarismcheck.org
Standard
Read 1 Oct 2026 · plagiarismcheck.org
Premium
Read 1 Oct 2026 · plagiarismcheck.org
Advanced
Institutional web-based account · public-resource searching · Google Classroom, Moodle and Canvas integration · personal institutional archive
Read 1 Oct 2026 · plagiarismcheck.org
Pro
Institutional web-based account · public-resource searching · Google Classroom, Moodle and Canvas integration · personal institutional archive
Read 1 Oct 2026 · plagiarismcheck.org
On the record
- Academic features
- Higher-education customers get grammar, spelling and punctuation checking, AI detection and authorship verification.plagiarismcheck.org · read 1 Oct 2026
- AI detection
- The site claims 99% accuracy in detecting even slight signs of AI.plagiarismcheck.org · read 1 Oct 2026
- API limit
- The API currently supports only English text and requires submitted text to be at least 80 characters.plagiarismcheck.org · read 1 Oct 2026
- Browser access
- PlagiarismCheck.org is browser-based and requires no installation.plagiarismcheck.org · read 1 Oct 2026
- Company history
- PlagiarismCheck.org says it was created in 2011 as an assistance tool for college students and teachers.plagiarismcheck.org · read 1 Oct 2026
- Core purpose
- The service checks text originality, verifies authorship, detects AI-generated content and helps improve writing.plagiarismcheck.org · read 1 Oct 2026
- Data handling
- The company says it does not keep uploaded writings in its database and that uploaded texts remain confidential.plagiarismcheck.org · read 1 Oct 2026
- Detection capabilities
- The checker detects exact matches, substitutions and rearrangements in word order and sentence structure.plagiarismcheck.org · read 1 Oct 2026
- Free checking
- Users can check 2 pages for free.plagiarismcheck.org · read 1 Oct 2026
- Institutional users
- Organizational plans target K-12 schools, higher-education institutions, research institutions and businesses.plagiarismcheck.org · read 1 Oct 2026
- Integrations
- Listed integrations include Moodle, Google Classroom, Canvas, Blackboard and a Google Docs add-on.plagiarismcheck.org · read 1 Oct 2026
- Reports
- The product provides interactive results and downloadable reports.plagiarismcheck.org · read 1 Oct 2026
- Support
- The company lists support by email and a 24/7 phone number.plagiarismcheck.org · read 1 Oct 2026
- Usage reach
- The homepage reports more than 1,000,000 users and more than 21,000,000 texts checked for plagiarism.plagiarismcheck.org · read 1 Oct 2026
