Plagius review
A paid desktop checker combining web searches, local comparisons, and AI-text detection.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Plagius is desktop plagiarism-detection software for Windows and macOS. It searches internet sources for potentially copied passages, reports suspected matches and similarity percentages, and supports local-file comparison in its Professional plans. The product is aimed at students, educators, researchers, and organizations that want locally installed document checking with optional internet-based searches. Supported formats include DOC, DOCX, PDF, OpenOffice, PPT, HTML, RTF, and TXT.
Pricing uses one-time payments rather than recurring subscriptions. Plagius Basic costs $6.90 and includes internet plagiarism search, one computer, Windows support, and free support. Plagius Pro12 costs $15.90 and adds local-file comparison, batch analysis, unlimited analyses, AI-generated-text detection, and URL analysis alongside internet search. Plagius Pro24 costs $22.90 and lists the same features. The paid structure suits buyers who prefer a single purchase, while the lack of a free plan means evaluation requires a paid plan.
Its main strength is the breadth of checking modes in a desktop application: web-source searches, local-file similarity comparison, direct webpage or URL analysis, batch document analysis, and cross-comparison of files. Reports can include similarity percentages and source URLs, with HTML report export available. The product is less suitable for teams seeking connected workflows because it has no LMS integrations or API access. Choose Plagius for desktop-based checking across web and local documents; choose another tool if integrations or programmatic access are central requirements.
Plagius pros and cons
- Where it wins
- Checks internet sources, local files, URLs, and cross-file similarities
- Professional plans add batch analysis and AI-generated-text detection
- Exports reports with similarity percentages and source URLs
- Where it doesn't
- No free plan or recurring subscription option
- No LMS integrations or API access
- Basic is limited to one Windows computer
Plagius fact sheet, pricing and score →
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