3 simple steps

Add sources

Upload or copy-paste the documents that you want to compare with your paper.

How do I add sources?

Interpret your report

Similarities between your paper and the sources you uploaded are highlighted.

How do I interpret my report?

Review and resolve issues

Check similarities to avoid plagiarism and make adjustments where necessary.

How do I review similarities?

Own sources checker upload sources

1. Add sources

There are two ways to add your sources:

  • Upload a file (.pdf or .docx)
  • Copy and paste text (e.g. in the case of an internet source)

Manage sources

Forgot to add a source? No problem! You can upload more sources by clicking on the “manage sources” button at the top left corner of your screen.

2. Interpret your report

After the Own Sources Checker has compared your paper to the sources you’ve added, you receive a detailed report. On the left, you see an overview of the number of issues per source. On the right, you see your paper in which similarities are highlighted.

The overview

See the total number of issues and a list of all sources.

Issues per source

For each source, you see how many similarities have been detected.

Highlighted similarities

Similarities are highlighted in your text. The color corresponds to the respective source.

3. Review and resolve issues

Reviewing every similarity is important to make sure you have not committed unintentional plagiarism. Follow the steps below to review and resolve all issues.

1. Is it actually plagiarism?

Not every similarity is plagiarism. Ask yourself:

  • Are these my own words and ideas?

If the answer to this question is “Yes,” then this similarity probably does not constitute plagiarism.

If the answer is “no,” and you have copied or adapted someone else’s words or ideas, you should correctly credit the source.

2. Paraphrase or quote

Using someone else’s words or ideas is fine, but you need to credit the source. You should either quote or paraphrase the original text.

Paraphrasing means formulating someone else’s ideas in your own words, without changing the meaning of the original text. Even when you paraphrase, you should cite the source.

Learn how to paraphrase

Quoting means copying someone else’s words without changing them. A quote is placed in quotation marks and accompanied by an in-text citation.

Learn how to quote

Ready to detect plagiarism?

The Own Sources Checker is temporarily free in combination with the Scribbr Plagiarism Checker (normally $14.95).

Start the check


Ask our team

Want to contact us directly? No problem. We are always here for you.

Frequently asked questions

See all
Which file formats can I upload as a source in the Own Sources Checker?

You can use the following file formats:

  • Doc
  • Docx
  • Pdf
  • Txt

If you have a document in a different file format, we recommend converting it to docx or pdf and then uploading it as a source.

Can I change my original document?

No, it is not possible to change your original document. However, you can add, remove, and change as many sources as you want.

How can I add internet sources?

Here’s how it works:

  1. Browse to your internet source and select the text. Right click and choose “Copy”.
  2. Head over to the Own Sources Checker and click the “Paste text” button.
  3. Right click on the text area and choose paste.
  4. Your source text now appears in the text area.
  5. Click “Add source” to upload your source.

Tekst als bron gebruiken

How can I download my Plagiarism Report?

download-own-sources-checker-pdfClick the download icon at the bottom right of your screen.


When should I use the Own Sources Checker instead of the Scribbr Plagiarism Checker?

The Scribbr Plagiarism Checker compares your document against the largest content database in the world. It will detect any similarities with documents in that database.

However, you might be unsure if all of the sources you used are in that database – for example, because some of your sources are unpublished. In this case, you can make use of our Own Sources Checker. Here you can add all the sources you want to a private database and compare them with your own document.

How many sources can I add to the Own Sources Checker?

You can add up to 25 sources at a time to the Own Sources Checker. If you want to add other sources as well, you need to remove others first.

Will my sources/document be stored in a (shared) database?

No, the Own Sources Checker does not store your document in any public database.

In addition, you can delete all your personal information and documents from the Scribbr server as soon as you’ve received your plagiarism report.