How accurate is your plagiarism checker?

Viper's plagiarism checker is powered by third-party technology that searches a vast range of online sources, academic databases, and internal materials to detect similarities with exceptional precision.

Independent testing has shown accuracy levels of around 99%, covering everything from direct copying and paraphrasing to AI-generated or translated content. The system compares your text against billions of web pages, academic journals, and open-access publications, helping ensure a thorough and reliable check.

It also supports more than 100 languages, making it one of the most comprehensive plagiarism detection tools available.

While results are highly dependable, no system can identify every possible match. Formatting, rare file types, or very obscure sources may sometimes limit detection. For the best results, always upload clean, text-based documents (such as DOCX or PDF).

Viper's plagiarism detection aims to give you the most accurate and transparent assessment possible - helping you confirm the originality of your work with confidence.