Viper Plagiarism Checker

What is Viper Plagiarism Checker?

Viper Plagiarism Checker is an online tool that runs in your web browser. It began as Windows software but moved to an online platform in 2017, which improved its scanning speed and accuracy.

You upload a document and Viper checks it against a database of over 10 billion sources, including essays, academic journals, and online content. It then produces a clear report showing exactly where matching text was found.

Viper works on a pay-as-you-go credit system, so there are no subscriptions. Free scan options are also available. Students and institutions use it as a cost-effective way to verify the originality of submitted work.

Who created Viper Plagiarism Checker?

Viper is run by All Answers Ltd. The founder’s name isn’t specified, but the tool’s history is well documented: it started as Windows software and transitioned to an online app in 2017, improving its plagiarism matching and scanning speed. It has since become a popular choice for students and institutions seeking an affordable originality check.

How to use Viper Plagiarism Checker

1. Visit the Viper website and open the plagiarism checker section.
2. Upload your text — either type it directly into the box or upload a document file.
3. Click “Check now” to start the scan.
4. Wait for the scan — Viper compares your document against its database of essays, journals, and online content.
5. Review the report, which highlights any text matching other sources.
6. Pay as you go — buy credits only when you need them, with no subscriptions or monthly plans.
7. Try a free scan — the free option supports documents up to 5,000 words.