Copyscape vs Plagiarisma
Copyscape
copyscape.comPlagiarisma
plagiarisma.netSide by side
| Figure | Copyscape | Plagiarisma |
|---|---|---|
| Price from | $4.95/mo | $8.25/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 5 | 8 |
| Spec score · Plagiarism Checkers | 9.2 (#2) | 9.1 (#4) |
| Spec score · Plagiarism Detection Software | 9.2 (#2) | 9.0 (#6) |
| Spec score · AI Plagiarism Checkers | 9.2 (#2) | 9.2 (#4) |
| Headquarters | Crunchbase lists Copyscape in Tel Aviv, Israel. | 71-75 Shelton St, London WC2H 9JQ, United Kingdom |
| Purpose | Copyscape checks web content and new human- or AI-generated content for plagiarism and duplicate text found online. | The online checker scans text against web sources, books, and academic papers for originality. |
| Support | Copyscape accepts questions, comments, and suggestions through its contact form. | The contact page lists [email protected] and says premium members should include a valid order ID when reporting issues or sending suggestions. |
| What it does | Copyscape searches online content for matching or copied text and supports originality checking for human- and AI-generated material. | Plagiarisma checks pasted text, uploaded documents, and URLs for matching passages and reports a uniqueness score. |
Plans
Copyscape
- Free CopyscapeFree
- Copyscape Premium$0.03, paid once
- Copysentry Weekly protection$4.95 a month
- Copysentry Premium daily protection$19.95 a month
- Copyscape EnterprisePriced on request
Plagiarisma
- Plagiarisma Desktop Plagiarism CheckerFree
- Standard checksFree
- One-day subscription$2, paid once
- One-month subscription$10, paid once
- Three-month subscription$25, paid once
- Six-month subscription$49, paid once
- One-year subscription$99 a year
- Paid featuresPrice not published
In their own words
Copyscape
Copyscape checks web pages and newly written human- or AI-generated content for plagiarism and duplicate text found online. Its free checker scans a URL and presents a word-by-word comparison of results, but shows no more than 10 search results and limits scans per website. Premium accepts pasted text as well as PDF and Word uploads for originality checks. Its Batch Search can process up to 10,000 pages in one operation, with each page billed like a regular search. The Premium API can automate plagiarism and AI checks and return results in JSON, XML, or HTML; a WordPress plugin supports checks in a WordPress workflow. Premium users can create a private index of their own content, accessible only through their Copyscape account. Copysentry monitors selected pages daily or weekly and emails alerts when it finds copies. Enterprise can be hosted on-premises or in a private cloud. Copyscape says it uses Google for search and then processes results with proprietary algorithms. It warns that AI detector results may misclassify human or AI text and should not be the sole basis for disciplinary action.
Plagiarisma
Plagiarisma is an originality checker that compares text with web sources, books and academic papers. Users can paste text, enter a URL or upload a document in formats including PDF, DOCX, RTF, TXT, HTML, spreadsheets, presentations and ebooks. Its homepage says the checker supports more than 190 languages. The service runs on the web and has a Windows desktop download listed as version 2.0 for.NET on Windows x86/x64. Desktop tools include plagiarism scanning, AI content detection, paraphrasing and APA citation generation. A Google Docs add-on offers checking, paraphrasing, summarizing and AI detection; its listing allows five free document scans per day, with paid features available by monthly subscription. A free plan is listed, including a Windows desktop checker at free. The company says it does not store private texts in public databases. Its FAQ says premium membership orders may be refunded within three days, while trial orders are not refundable.