Professional Plagiarism & AI Detection
Enterprise-grade content analysis with advanced plagiarism detection, AI writing identification, and comprehensive originality reporting. Trusted by educators, researchers, and professionals worldwide.
🔍 Analyze Your Content
Upload documents or paste text to check for plagiarism, AI-generated content, and grammar issues
📊 Analysis Report
🎯 Executive Summary
Your content demonstrates high originality with minimal matches found across our database. The writing style exhibits natural human patterns with varied sentence structure and authentic voice. Overall quality is excellent with minor grammar improvements suggested.
- Plagiarism: 2 sources matched (5% similarity)
- AI Detection: Low probability (8%) - Human authorship likely
- Readability: Grade level 10-12, suitable for general audience
- Grammar: 92% accuracy with 3 minor issues
📝 Highlighted Content
Sections highlighted in red indicate potential plagiarism. Sections in orange suggest AI-generated content.
🔗 Matched Sources
💡 Recommendations
- Improve Originality: Rewrite the 2 highlighted sections to reduce similarity below 5%
- Add Citations: Properly cite the 2 matched sources using APA/MLA format
- Review AI Sections: The orange-highlighted sections show AI patterns - consider rewriting for authenticity
- Fix Grammar: Address the 3 minor grammar issues identified in the text
- Enhance Readability: Consider breaking up longer sentences for better flow
📈 Detailed Metrics
- Word Count: 1,247 words
- Character Count: 7,842 characters
- Sentence Count: 68 sentences
- Average Sentence Length: 18.3 words
- Reading Time: 5 minutes
- Flesch Reading Ease: 67.4 (Standard)
- Flesch-Kincaid Grade: 10.2
How Our Professional Plagiarism Checker Works
Our enterprise-grade content analysis system employs advanced algorithms and machine learning to provide the most accurate plagiarism detection and AI content identification available. Trusted by universities, publishers, and corporations worldwide.
Advanced Plagiarism Detection
Our plagiarism checker scans your content against:
- 60+ Billion Web Pages: Comprehensive index of publicly available content
- Academic Databases: ProQuest, JSTOR, PubMed, and other scholarly repositories
- Published Books: Millions of digitized books and publications
- Student Papers: Database of previously submitted academic work
- News Archives: Historical news articles and media content
AI Content Detection Technology
Our AI detector uses multiple sophisticated methods to identify AI-generated text:
- Perplexity Analysis: Measures the predictability and randomness of text patterns
- Burstiness Detection: Analyzes variation in sentence structure and length
- Stylometric Analysis: Examines writing style consistency and natural language flow
- Pattern Recognition: Identifies common AI writing signatures and artifacts
- Semantic Coherence: Evaluates logical flow and contextual consistency
Supported File Formats
We support all major document formats for your convenience:
- .TXT - Plain text files
- .DOC / .DOCX - Microsoft Word documents (all versions)
- .PDF - Portable Document Format files
- .RTF - Rich Text Format files
- Direct URL - Web page content extraction
Why Choose deesu Content Checker?
Enterprise-Grade Security
Your content is encrypted in transit and at rest. We never store, share, or sell your documents. SOC 2 Type II certified infrastructure ensures maximum data protection.
Lightning-Fast Analysis
Get comprehensive results in under 30 seconds for documents up to 10,000 words. Our distributed scanning infrastructure processes content in parallel for instant results.
Detailed Reporting
Download professional PDF and DOC reports with highlighted text, source links, similarity percentages, and actionable recommendations for improvement.
Academic Integrity
Trusted by 500+ universities and educational institutions worldwide. Compliant with academic integrity standards and citation requirements.
Multi-Language Support
Detect plagiarism and AI content in 100+ languages including English, Spanish, French, German, Chinese, Arabic, and more.
Free Forever
No registration required. No hidden fees. No usage limits. Professional-grade plagiarism detection available to everyone, completely free.
Frequently Asked Questions
Yes! Our plagiarism and AI checker is completely free with no registration required. You can check unlimited documents without any restrictions. We believe academic integrity tools should be accessible to everyone.
Our AI detector has a 95%+ accuracy rate for content generated by major AI models including ChatGPT, Claude, Gemini, and others. However, no detector is perfect, so we recommend using it as a guide alongside human review. The system analyzes multiple factors including perplexity, burstiness, and writing patterns.
We support TXT, DOC, DOCX, PDF, and RTF files up to 25MB each. For text input, there's no character limit. URLs can be checked directly. Larger files may take slightly longer to process but will be analyzed with the same accuracy.
Absolutely. We take privacy seriously. Your content is encrypted during transmission and processing, never stored on our servers, never shared with third parties, and never added to any database. All analysis is performed in real-time and your data is immediately deleted after processing. We are SOC 2 Type II certified.
Yes! Our tool is specifically designed for academic use and is trusted by universities worldwide. It checks against academic databases, scholarly articles, and student papers. The detailed reports include proper citation suggestions and similarity percentages required for academic integrity verification.
Our system uses advanced text-matching algorithms to compare your content against billions of web pages, academic databases, publications, and previously submitted documents. It identifies exact matches, paraphrased content, and similar sentence structures. The system provides a detailed report showing matched sources with similarity percentages and highlighted text.