Check-Plagiarism
Ranked in AI Plagiarism Checkers·paid from $4.17/mo
About
Check-Plagiarism checks submitted text and returns duplicated passages, similarity percentages, and matching sources. Users can paste or type text, or upload DOC, DOCX, TXT, or PDF files; the listed maximum is 7,000 words per document. The checker says its AI can find paraphrases and lightly edited text as well as exact matches. Reports include sentence-level matches, sources, and similarity percentages, and can be downloaded or shared. The service claims support for over 20 languages and describes coverage of billions of web pages plus academic databases and publications. File limits are described differently: one feature description allows up to five documents at once, while the homepage says free users can choose up to three and premium users up to 20 per search. Free online searches are limited, with higher limits available to registered accounts. An API returns matching sentences and URLs in detailed JSON and is described as integrable with any CMS; named platforms include WordPress, widgets, and Android. The API page advertises 24/7 support for selected tiers. The site says checked content is removed after processing, while its privacy policy also describes collection and specified sharing of personal and usage data.
Who it is for
The service is aimed at students, teachers, researchers, content creators, and digital publishers who need plagiarism checks or reports. Teams integrating checks into a CMS can also consider the API.
What is good
- Accepts pasted text and four document formats.
- AI matching covers paraphrases and edited text.
- Reports can be downloaded or shared.
- API returns matching sentences and URLs in JSON.
- Free checker and free plan are listed.
What to know first
- Free searches are limited.
- File-count limits differ between descriptions.
- Maximum document length is 7,000 words.
- Privacy policy allows specified personal-data sharing.
Verdict
Check-Plagiarism provides file-based and pasted-text checks, report exports, and an API. Confirm the applicable file limit and review the privacy terms before submitting sensitive material.
Compared on AI plagiarism checkers
- Free plan
- Yescheck-plagiarism.com
- Source coverage
- web_onlycheck-plagiarism.com
- Maximum document words
- 7,000 wordscheck-plagiarism.com
- Supported file formats
- doc, docx, txt, pdfcheck-plagiarism.com
- LMS integrations
- Yescheck-plagiarism.com
- API access
- Yescheck-plagiarism.com
- Report export
- pdfcheck-plagiarism.com
- AI writing check
- Yescheck-plagiarism.com
Facts
- Purpose
- The service checks text for plagiarism and reports duplicated sections, similarity percentages, and matching sources.check-plagiarism.com · 28 Sept 2026
- Input methods
- Users can paste or type text, or upload DOC, DOCX, TXT, or PDF files for checking.check-plagiarism.com · 28 Sept 2026
- AI matching
- The checker says its AI can identify paraphrases and slightly edited text in addition to exact matches.check-plagiarism.com · 28 Sept 2026
- Reports
- Results include sentence-level matches, matched sources, and similarity percentages, and reports can be downloaded or shared.check-plagiarism.com · 28 Sept 2026
- Languages
- The checker page claims support for over 20 languages.check-plagiarism.com · 28 Sept 2026
- File limit
- The feature description says up to five documents can be checked at once, while the homepage says free users can select at most three files and premium users up to 20 per search.check-plagiarism.com · 28 Sept 2026
- Privacy claim
- The checker page says checked content is automatically removed after processing and is not saved or shared with third parties.check-plagiarism.com · 28 Sept 2026
- Privacy policy
- The privacy policy says the company may collect account and usage data and may share personal information with service providers, affiliates, or business partners in specified circumstances.check-plagiarism.com · 28 Sept 2026
- Integrations
- The API page says the API can integrate with any CMS and names WordPress, widgets, and Android among supported platforms.check-plagiarism.com · 28 Sept 2026
- API response
- The API returns a detailed JSON response with sentences and URLs matching the submitted text.check-plagiarism.com · 28 Sept 2026
- Support
- The API page advertises 24/7 support for selected API tiers and offers contact for integration questions.check-plagiarism.com · 28 Sept 2026
- Intended users
- The maker identifies students, teachers, researchers, content creators, and digital publishers as users of the service.check-plagiarism.com · 28 Sept 2026
- Free use
- The homepage describes a free online checker, and the site says visitors have limited searches while registered accounts can increase the limit.check-plagiarism.com · 28 Sept 2026
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Sources
- check-plagiarism.com/about· checked 28 Sept 2026
- check-plagiarism.com· checked 28 Sept 2026
- check-plagiarism.com/privacy-policy· checked 28 Sept 2026
- check-plagiarism.com/plagiarism-checker-api· checked 28 Sept 2026
- check-plagiarism.com/plans· checked 28 Sept 2026