Copyscape vs SmallSEOTools Plagiarism Checker
Copyscape
copyscape.comSmallSEOTools Plagiarism Checker
smallseotools.comSide by side
| Figure | Copyscape | SmallSEOTools Plagiarism Checker |
|---|---|---|
| Price from | $4.95/mo | $7.84/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 5 | 4 |
| Spec score · Plagiarism Checkers | 9.2 (#2) | 7.9 (#14) |
| Spec score · Plagiarism Detection Software | 9.2 (#2) | 7.9 (#15) |
| Spec score · AI Plagiarism Checkers | 9.2 (#2) | 8.0 (#10) |
| API | The Premium API supports automated URL, text, AI-detector and private-index operations with JSON, XML or HTML responses. | SmallSEOTools documents an API for plagiarism checks and account status; it says its APIs are currently only available for checking plagiarism. |
| Founded | Crunchbase lists the company as founded in 2003. | 2010 |
| Headquarters | Crunchbase lists Copyscape in Tel Aviv, Israel. | London, UK |
| Purpose | Copyscape checks web content and new human- or AI-generated content for plagiarism and duplicate text found online. | The checker compares submitted text with online sources and returns a plagiarism report with matched sources. |
| WordPress integration | Copyscape provides a WordPress plugin that uses Premium API credentials and can work with a private index. | A WordPress plugin can check content from the WordPress dashboard and requires adding an API in the plugin settings. |
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
SmallSEOTools Plagiarism Checker
- FreeFree
- Monthly$9.80 a month
- Yearly$94.08 a year
- Enterprise & LMSPriced on request
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.
SmallSEOTools Plagiarism Checker
SmallSEOTools Plagiarism Checker compares submitted text with online sources and returns a report identifying matches. Users can paste text, upload files from local or cloud storage, or check a URL. Upload formats include.doc,.docx,.txt,.tex,.rtf,.odt, and.pdf. Reports show duplication scores, exact and partial matches, flagged sentences, and source URLs. Quotations, references, and other properly attributed material can be excluded from the similarity score. The checker says it detects paraphrased content and synonym replacements as well as exact matches, and supports checks in more than 25 languages. Reports can be downloaded in PDF or Word format. The free plan allows up to 1,000 words per scan; paid plans start at $9.80/mo. An API is documented for plagiarism checks and account status, and a WordPress plugin checks content from the dashboard after an API is added in its settings. The product page says submissions are processed through a secure connection and remain confidential after analysis.