Support Global Languages
Check content similarity across 100+ languages, including Spanish, Russian, Portuguese, Arabic, Indonesian, Italian, Dutch, Korean, Japanese, Vietnamese, French, Swedish, Romanian, Norwegian, Danish, Turkish, and more.
Check Duplicated Content
The plagiarism checker scans documents and web pages to detect duplicated text. CudekAI highlights similar sentences and paragraphs while calculating a clear plagiarism percentage. The advanced analysis also identifies original sources for accurate originality verification.
Detect Rephrased Content
Detect paraphrased content by analyzing sentence structures, paragraph patterns, and full-document context. CudekAI's free plagiarism checker highlights rewording and paraphrasing plagiarism, ensuring precise similarity scores for reliable verification.
Citations & Sources
Identify Content Sources & Suggest Citations
Identifies sources across all inputs and provides source recommendations for proper citation. The plagiarism checker generates APA, MLA, and Chicago-style references; highlights quotations; corrects attribution with quotation marks; and suggests verified cited results.
All the features you need in Plagiarism Checker
Ensure High-Accuracy
Achieve high-accuracy detection with CudekAI free plagiarism checker, powered by advanced AI and machine learning. It identifies patchwriting, partial, and exact matches through deep scanning while maintaining content authenticity.
Large Global Database
Access a continuously updated global database of millions of sources, including online content, offline documents, academic papers, journals, ebooks, blogs, and video transcripts. The plagiarism checker ensures reliable and up-to-date content verification.
Analyze Structural Writing Patterns
Examine sentence structure, syntax, and stylistic patterns for accurate similarity detection. CudekAI Plagiarism Checker applies pattern-based similarity, linguistic fingerprinting, and style mapping to highlight structure and patterns across documents.
Compare Documents Side-by-Side
Review documents side-by-side for easy checking. Plagiarism checker enables manual review, highlights original content alongside text, and traces similarities across documents for precise verification.
How to Scan for Plagiarism?
01
Upload, Paste, or Search the URL
Paste a URL, copy-paste text, or upload files to scan webpages and documents with optional URL exclusions. Supported formats include DOCX, PDF, TXT, RTF, HTML, PPT, and more.
02
Start Scanning
Run a real-time plagiarism check with advanced text analysis and source comparison to detect copied content with CudekAI's free plagiarism checker.
03
Get a Detailed Report
The plagiarism checker generates a percentage-based report with highlighted matches and a source list for verification. Download the detailed report in your preferred format.
Why is CudekAI the best Plagiarism Checker?
Discover how the CudekAI plagiarism checker ensures content originality across academia, businesses, and creative projects.
Academia & Research
Students, teachers, and researchers can maintain academic integrity across assignments. CudekAI plagiarism detector detects essay, thesis, and research paper plagiarism with precise analysis. It verifies quotations, applies proper attribution, and supports accurate citation practices.
Business & Corporations
Business professionals can detect plagiarism in projects, resumes, books, corporate reports, presentations, and emails. The AI plagiarism checker ensures professional standards across large-scale content.
Content Creator & Copy Writers
Bloggers, editors, and publishers verify blog posts, articles, and web content for originality. The CudekAI plagiarism checker also supports creative writers in verifying poems and other creative works while maintaining writing integrity.
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Plagiarism Checker API
Performs content scanning with API integration. CudekAI enables teams to automate plagiarism detection for multiple documents with full API access.
// CudekAI Plagiarism Checker API
POST /v1/plagiarism/check
{
"inputText": "Your content here",
"language": "en"
}
See Why 100,000+ Users Check Plagiarism With CudekAI
100,000+
Global Users
Instant
Bulk Analysis
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Plagiarism Checker Across Global Languages
CudekAI’s plagiarism checker scans content across multiple languages to detect duplicate text, matched sources, and originality issues with high accuracy. Check essays, blogs, academic papers, and SEO content without translating your text.
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English
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Afrikaans
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Albanian
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Amharic
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Arabic
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Armenian
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Azerbaijani
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Basque
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Belarusian
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Bengali
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Bosnian
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Bulgarian
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Catalan
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Cebuano
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Chichewa
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Chinese Simplified
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Chinese Traditional
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Corsican
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Croatian
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Czech
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Danish
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Dutch
Esperanto
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Estonian
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Filipino
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Finnish
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French
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Frisian
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Galician
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Georgian
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German
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Greek
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Gujarati
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Haitian Creole
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Hausa
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Hawaiian
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Hebrew
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Hindi
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Hmong
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Hungarian
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Icelandic
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Igbo
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Indonesian
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Irish
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Italian
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Japanese
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Javanese
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Kannada
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Kazakh
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Khmer
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Korean
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Kurdish
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Kyrgyz
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Lao
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Latin
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Latvian
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Lithuanian
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Luxembourgish
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Macedonian
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Malagasy
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Malay
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Malayalam
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Maltese
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Maori
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Marathi
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Mongolian
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Myanmar
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Nepali
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Norwegian
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Pashto
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Persian
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Polish
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Portuguese
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Romanian
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Russian
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Samoan
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Scots Gaelic
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Serbian
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Sesotho
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Shona
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Sindhi
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Sinhala
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Slovak
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Slovenian
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Somali
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Spanish
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Sundanese
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Swahili
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Swedish
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Tajik
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Tamil
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Telugu
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Thai
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Turkish
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Ukrainian
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Urdu
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Uzbek
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Vietnamese
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Welsh
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Xhosa
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Yiddish
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Yoruba
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Reviews
Professionals and everyday users rely on it
AI Content Detector
Cudekai’s AI detector has been a real stress reliever. Some of my professors are strict about AI-written work, and this tool gives me confidence that my papers look authentic before I turn them in.
D
Daniel
Refine AI
I use Cudekai’s humanizer tool after finishing my papers to make sure they actually sound like me. It smooths out the writing and makes everything flow naturally—like my own voice, just better polished.
C
Chelsea
Rewriter
Whenever I’m stuck trying to rephrase something, I just drop it into Cudekai’s rewriter. It gives me cleaner, clearer versions in seconds and saves me so much time for other work.
R
Ricardo
Plagiarism Checker
Cudekai’s plagiarism checker is really solid. The reports are detailed but easy to understand, which makes fixing issues much quicker. It’s a must-have for my projects.
M
Michael
Other AI Tools
Explore advanced AI tools designed to enhance content verification and writing workflow.
Detect AI Content
Identify AI-generated text across sentences, paragraphs, and full documents. CudekAI provides multilingual analysis, human vs. AI classification, and confidence scoring for AI-generated text verification.
Learn MoreHumanize AI Text
Transforms AI-generated text into natural, human-like writing. The AI humanizer refines phrasing, improves readability, and enhances overall text clarity while keeping the original meaning.
Learn MoreParaphrasing Tool
Rephrase sentences and paragraphs, ensuring grammar-safe paraphrasing for academic and professional use. It maintains clarity and consistency across all content.
Learn MoreGenerate Citations
Create accurately formatted references for any document. CudekAI supports in-text citations, reference lists, and bibliographies in APA, MLA, Chicago, Harvard, and other discipline-specific styles. It ensures citation consistency and style compliance.
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Frequently Asked Questions (FAQs)
Scan Content for Plagiarism
Run a free plagiarism scan. Generate a plagiarism report in seconds.