Online paraphrasing detection of PDF documents

Automatically detect paraphrasing in PDF documents for free on any device

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Online PDF document paraphrasing detection

Unique content is a valuable resource nowadays, especially in some fields where plagiarism could lead to serious problems. PDF is the de facto standard for content distribution between businesses, organizations, scientists and individuals. It is designed to look the same on any device, including the structure and styles. And PDF is the most popular format to store documents of any kind, from scientific papers to invoices. Therefore plagiarism detection of PDF documents becomes very important and this service is proposed rather often, usually even providing links to documents or web pages that were used. Unfortunately most of services work only with direct plagiarism when some parts or the whole content were copied fully or with slight modifications, and unable to detect cases when text was seriously reworked.

Paraphrasing detection feature in GroupDocs Rewriter is a fast and easy-to-use API for document paraphrasing detection. As well as plain text it supports also the most popular document formats like Microsoft Word and Adobe PDF. Its advanced AI algorithms can analyze texts and detect paraphrases in seconds. The API tries to understand the meaning of the entire text and find unusual patterns that could be a signal of paraphrasing usage, rather than just comparing random parts of the text with the collection of documents. While the background process is very complex and resource-intensive, you do not have to worry about formulas, machine learning, and load – our cloud services do all the work by providing you with a REST API to interact with them.

This free online application powered by GroupDocs Rewriter API can automatically detect paraphrasing in English documents in Adobe PDF formats. Also it allows to get a detailed report in CSV format, with probability estimates of every paragraph. The application can process files hosted on websites without downloading them. It works on any device, including smartphones and tablettes.

Translation video

How to detect paraphrasing in PDF document

Step 1 icon

Provide a file

Upload PDF document or simply enter the file’s web address

Step 2 icon

Check for limits

Make sure that caracters number limit is not exceeded

Step 3 icon

Start detection

Click Detect button.

Step 4 icon

Get result

Wait for the detection to complete. You’ll receive the overall probability that Word document is paraphrased and a link to CSV file with full report.


Are there any limitations?

Can I detect paraphrasing in files with multilanguage content?

Is the text source important?

What additional information provides full report?

Does application returns a link or some info about original document if paraphrasing is detected?

Could I use this app for plagiarism detection?

What are the system requirements?

Can I use the app from mobile devices?

Is this app free?

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More than copy & paste detection

More than copy & paste detection

The application tries to understand if the entire document was paraphrased instead of checking in the collection if some random extracts are copied & pasted.

Check for paraphrasing large documents

Check for paraphrasing large documents

You can work with documents up to 10,000 characters in one request. It's about 4-5 full pages.

Detailed result

Detailed result

You could also get probabilities of been paraphrased for every paragraph in the document with significant textual content.

Zero system load

Zero system load

The processing is carried out by high-performance cloud servers. You can use the application on any system – from entry-level netbooks to smartphones.

No cost

No cost

The application can process any number of documents for free, for as long as you need.

Top content quality

Top content quality

Many years of experience in machine leaning technologies has led to the creation of state-of-the-art algorithms with superior speed and accuracy. GroupDocs products are used by most Fortune 500 companies across 114 countries.

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