This guide helps iThenticate administrators understand the settings used to control how Similarity Reports work for users in their account.
In this guide:
- Changing available search repositories
- Choosing submission indexing options
- Source text visibility
- Showing paper match details
Changing available search repositories
- Login to iThenticate and select Settings from the Main Menu sidebar.
- From the Settings page, choose the iThenticate Web tab.
- Select the Search Repositories that users can choose to compare their submission against by selecting the different checkboxes. Your selections will adjust the available search repositories in your users' account settings:
- Internet - Turnitin's 'web crawler' actively archives websites and holds over 90+ billion current and removed web pages in our database.
- Publications - Turnitin partners with leading content publishers to create a robust collection of over 170 million articles from library databases, textbook publishers, digital reference collections, subscription-based publications, and books. Theses and disserations via ProQuest are also included for iThenticate and Crossref Similarity Check users.
- Crossref & Crossref Posted Content - The Crossref repository is a collection of published scholarly works and the Crossref Posted Content collection of scholarly works that have been submitted but not yet published. Both available to search submissions against through our exclusive partnership with Crossref.
- Submitted Works - This is a collection of the works that have been previously submitted and indexed to the account and can be used as comparison sources.
- Use the Save button to confirm any changes you've made.
By default, content submitted to iThenticate is not indexed in any publicly searchable repository.
However, some customers have the option to enable a global repository. When this option is selected, submitted documents are stored in a shared, private database that other participating customers’ Similarity Reports can check against.
Choosing submission indexing options
Indexing is the process of storing a file within our repository. This process happens during the submission of a file.
- Login to iThenticate and select Settings from the Main Menu sidebar.
- Select the iThenticate Web tab and scroll down to Submission Indexing.

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Any indexed submissions will be available for comparison in Similarity Reports. You have three options you can select:
- Index all submissions: All submissions will be indexed in the relevant repository and will be available for comparison in Similarity Reports by other users within your organization. Depending on your license type, choosing this setting will also add submissions from your institution to the submitted works repository, which allows users outside of your organization to check for similarity among their submissions and yours.
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Allow users to choose: At upload, users can opt to index their submission to the account's repository (and, depending on your organization’s license, to the submitted works repository) and make it available for comparison in Similarity Reports by other users within your organization.
- Don't index any submissions: No submissions will be indexed to any repository, and therefore the user submissions will not be available for comparison in Similarity Reports.
- Use the Save button to confirm any changes you've made.
The following permissions impact how data can be shared across your organization. This data is the exclusive responsibility of your organization. When setting these permissions, consider whether they fully comply with your organization's policy regarding user records.
Source text visibility
As an administrator, you are able to change the default state of the source text visibility from the Administrator Account Settings page. Users can be allowed to view the full text of a matching source or none at all.
Source text visibility is only available when the 'Submitted works' search repository has been selected.
- Navigate to Settings using the Main Menu sidebar on the left and choose the iThenticate Web tab.
- From the Source Text Visibility section, decide what you'd like users on your account to view.

- Show full text - Users from your account will see the full text of the matching file.
- Don't show any text - Users will see a match, but won't see any of the matching file's text.
- Use the Save button to confirm any changes you've made.
Showing paper match details
If iThenticate finds matching text from a paper within your organization's private repository, this option will allow users to view the available details from this matched source.
- Select Settings from the Main Menu sidebar on the left and choose the iThenticate Web tab.
- From the Paper Match Details heading, choose the radio button that fits with your organization.
- Selecting Show paper match details will enable it for all users in your organization.
- Don't show paper match details is the default setting.
- Use the Save button to confirm any changes you've made.
How does it work?
User A uploads a document. It goes into your organization's private repository. Later, User B uploads a document. iThenticate scans this submission and finds that 20% of the text on User B's submission is identical to User A's submission.
When Show paper match details is enabled, any matches to sources within your private repository will appear in the source overview panel as 'Submitted works'. By default the source will be open on the Source view. This shows an excerpt of the submission with the matching text highlighted. If available, the Details view will show the following information:
- The name of the user who submitted the manuscript
- The date the file was uploaded
- The manuscript title
Selecting View Full Text will display the entire submission with the matching text highlighted.