AI Plagiarism Checker with Report and Originality Certificate
AI plagiarism check with a similarity score, highlighted matches, Word/PDF report and an originality certificate. For students, teachers and writers.
About AI Plagiarism Detector
The Doffl AI Plagiarism Detector scans your text against indexed web pages and academic sources to identify duplicate content and unoriginal phrasing. It calculates precise similarity percentages alongside side-by-side source comparisons to help you maintain rigorous editorial, commercial, and academic standards.
Designed for educators, content marketers, researchers, and professional writers, this browser-based tool flags matched phrases and issues verifiable originality certificates. You can test the scanning engine with a free trial or select a subscription plan for ongoing document audits and full report exports.
Key features
- Comprehensive similarity scoring with side-by-side text comparisons
- Downloadable official originality certificates for verified authenticity
- Word and PDF report exports with color-coded highlights
- Deep scanning across billions of web pages and publications
- Detailed source breakdown showing matching URLs and excerpts
- Flexible subscription plans with an introductory free trial
How to use AI Plagiarism Detector
- Paste your text directly into the field or upload a document.
- Run the scan to cross-reference your copy against indexed web sources.
- Review the overall similarity score and inspect highlighted duplicate passages.
- Export the complete breakdown as a Word or PDF file.
- Generate and download an official originality certificate for your records.
Who is it for?
- Educators and professors grading academic essays and student assignments
- Content marketers and SEO editors auditing articles before publication
- Academic researchers verifying citations and literature reviews
- Freelance copywriters providing verifiable proof of original work to clients
Frequently asked questions
How does the AI plagiarism detector identify duplicate content?
The tool cross-references your submitted text against a massive index of published web content, articles, and public papers. Advanced matching algorithms identify identical phrasing, rearranged sentence structures, and paraphrased passages.
Can I export the scan results with highlighted text?
Yes. You can export detailed similarity reports directly to Word or PDF formats, complete with color-coded highlighting on matching text and links to the identified source URLs.
What is an originality certificate?
An originality certificate is a downloadable document that validates your scan results. It includes the document title, submission date, word count, and overall similarity score as formal verification of originality.
Is the AI plagiarism detector free to use?
Doffl offers a free trial that allows you to test the plagiarism detection features. Continued scanning, full document exports, and certificate generation require an active subscription plan.
What file types are supported for document uploads?
You can paste raw text into the browser interface or upload files in common document formats, including DOCX, PDF, and TXT.