Free Plagiarism Checker: Your Best Defense Against Plagiarism

Our online plagiarism checker scans over a billion texts online and in journals worldwide to identify potential plagiarism and similar content in your document. Ensure your work is original and free of copied content with just one click.

What is an AI plagiarism checker?

AI plagiarism detectors use sophisticated database technology to search for similarities and duplicate content between your document and pre-existing texts. Universities often utilize these tools to evaluate student papers. Commercial versions of plagiarism checkers are now available for individuals to verify the originality of their work before submission.

Our AI Plagiarism Checker's detection model can check for plagiarism by systematically exploring and cataloging online content and comparing your document against a database of internet-based materials for any similarities. They identify matching text through keyword analysis. Some plagiarism detectors are capable of recognizing instances of heavy paraphrasing, where the match is closely related.

Why choose our plagiarism checker?

plagiarism detector magnifying glass vector image

Comprehensive plagiarism checker software for any document

Our plagiarism detection and similarity check can:

  • Detect plagiarism in published works in over 100 languages
  • Inspect for multiple forms of paraphrasing
  • Detect source code plagiarism
  • Identify most AI-generated content
plagiarism detector magnifying glass vector image with file in background

Unrivaled depth of search results

Our AI plagiarism detector identifies content duplication and paraphrasing within trillions of pages of original content, including:

  • Open-access journals
  • Internal database documents
  • Websites
  • Code data repositories

How does our plagiarism checker work?

Enter your text or upload your document

Simply copy and paste all your content from your document into the plagiarism detection solution text field or upload your entire document and click “Plagiarism Check” to get started.

plagiarism checker report
plagiarism checker computer vector image

Check for plagiarism at the click of a button

Once the plagiarism check has begun, simply wait for the tool to cross-check references across the internet for exact or similar matches to the text you entered.

Get a similarity check with instant results

In just a matter of minutes, our plagiarism detection software scans and searches through millions of databases and sites online and gives you detailed results. Sources are provided for plagiarized text so you can see what has been included in your text and what needs to be changed.

plagiarism checker files vector image

Who can use the Wordvice AI Plagiarism Checker?

Our AI plagiarism checker app can be used by anyone who needs to ensure their writing is original and contains no plagiarized text or copyright issues.

plagiarism checker graduation cap vector image


Students can perform a quick plagiarism check for their papers or homework before submission to avoid making a teacher or professor question their academic integrity. Wordvice AI’s plagiarism-checking software makes it easier for students to prepare any written work and takes away some of the pressure of turning in important writing assignments.

plagiarism checker stylus and pencil vector image

Teachers & professors

Whether in middle school, college, or university, teachers and professors are tasked with ensuring that their students are writing work that is original and authentically researched. With the advent of AI writing tools, it has become ever easier for students to plagiarize or even compose writing that is not their own. Our plagiarism checker takes some of the burden off of teachers so they can focus on teaching the material.

plagiarism checker magnifying glass and paper vector image

Researchers & content writers

Every academic researcher knows just how crucial it is to write research papers that capture the important elements of their study. Unfortunately, many researchers and content writers end up plagiarizing other studies and source material by accident. Using an AI website to check for plagiarism before submitting your work to journals is always a good idea, as it shows journal publishers that you are an ethical researcher, instilling trust in your study approach and results.

Types of Plagiarism Detected by Our AI Plagiarism Checker

Plagiarism is the act of copying work from another source and passing it off as the author’s own in their work. There are a few different types of plagiarism you should be aware of. All of the following types are identified by our plagiarism tool.

plagiarism checker puzzle piece vector image

Mosaic plagiarism

Mosaic plagiarism occurs when an author applies phrases from a source without using quotation marks. It can also involve using synonyms for the original work’s language while maintaining the same overall structure and meaning. This is perhaps the most common form of plagiarism and is one reason why plagiarism checks will often show that parts of sentences have been copied, rather than entire sentences or paragraphs. Often, a query on search engines will yield results for this type of plagiarism.

plagiarism checker warning sign vector image

Accidental plagiarism

Although any kind of plagiarism could be done by accident, plagiarism can often occur when a writer simply forgets to paraphrase, rewrite, or cite the source in their final draft before submitting it. Cases of accidental plagiarism are common, especially in graduate studies, academic research, and even news articles. Use our plagiarism detection service to ensure there are no accidentally plagiarized phrases remaining in your text.

plagiarism checker check mark bulletin board vector image


Self-plagiarism means reusing one’s own previously published work. This could include data, parts of a paper, or graphs from an old paper. Many researchers assume that, if the work is their own, they can include it in current papers without citing it. However, if you are leading the reader to believe that your work is original when it is not, then you are plagiarizing. Be sure to check for self-plagiarism in your manuscripts before submitting them to journals.

Wordvice AI Plagiarism Checker FAQ

Here are some frequently asked questions about our plagiarism checker.

  • What is the Wordvice AI Plagiarism Checker?
  • How does the AI Plagiarism Checker work?
  • How does our plagiarism checker compare to other similar tools?
  • Is the Wordvice AI online plagiarism checker free?
  • How many pages can I scan each month with the AI Plagiarism Checker?
  • If I do not use all my scans in one month, can I use them in the following month?
  • What additional AI revision tools does Wordvice AI have?