Free Plagiarism Checker — Check Content Originality
Verify your content is original with detailed similarity reports and source matching.
About Our Free Plagiarism Checker
Our free plagiarism checker helps students, teachers, and content writers verify the originality of their work instantly. Simply paste your text or upload a PDF/DOCX file to check plagiarism online for free. ContentGuard compares your content against billions of web sources and academic databases, returning an exact match score, partial match score, and unique content percentage. Unlike paid tools, our plagiarism checker requires no account creation and stores no documents. Get detailed similarity reports with source citations in seconds.
Common Questions About Our Plagiarism Checker
How is ContentGuard different from Turnitin?
Turnitin requires an institutional license — your school or employer has to pay for access and create accounts. ContentGuard AI is completely free for individuals, with no signup needed. You also get plagiarism detection and AI content detection in a single scan, so you can verify originality and check for AI-generated text at the same time instead of using two separate tools.
Is there a word or character limit?
You need at least 10 words for a meaningful analysis. The maximum is 50,000 characters per scan — roughly 8,000–10,000 words, which comfortably covers most essays, research papers, and blog posts. There is no daily scan limit.
Can I check website or blog content, not just essays?
Absolutely. Bloggers and content marketers use ContentGuard to catch duplicate content across the web — whether someone has scraped your article or you want to make sure a freelancer's draft is original before publishing. Just paste the text from any page and the checker will cross-reference it against web sources, the same way it handles academic papers.