SharePoint Document Issues

How to Find and Remove Duplicate Documents in SharePoint Online

Maira Mehtab Sep 22, 2026 869 views

Question details

The administrator needs a reliable method to identify duplicate documents and safely remove redundant copies from their SharePoint environment.

Product: SharePoint Online
Device & OS: not provided
Scenario: Cleaning up a SharePoint document library to free up storage space and improve file organization by eliminating redundant files.
Observed behavior: Multiple identical or outdated copies of documents exist across SharePoint sites, and a streamlined cleanup process is required.

Before you start

Before proceeding with deletion, verify that the suspected duplicate documents are not actively linked to other sites, shared with external users, or currently being used as working drafts by your team.

Solution 1Recommended

Use SharePoint Search and Metadata for Manual Identification

Utilize SharePoint's built-in search functionality and document library properties to manually locate and remove files with identical names or metadata.

SharePoint does not offer a native single-click button to find duplicates. However, utilizing the library's sorting and search capabilities allows administrators and users to pinpoint overlapping files effectively.

Access the Document Library

Navigate to the specific SharePoint site and open the Document Library where you suspect the duplicate files are stored.

Sort by Name and File Size

Click on the 'Name' column header to sort files alphabetically, which places files with identical or similar names next to each other. Add and check the 'File Size' column to verify if the grouped files are exact matches.

Check Version History

Right-click on a suspected duplicate and select 'Version History' to see if one file is an older iteration of another rather than an intended separate document.

Delete the Redundant Copies

Select the checkbox next to the duplicate files you wish to remove, then click the 'Delete' button in the top command bar to move them to the Recycle Bin.

Solution 2

Automate Duplicate Removal using PowerShell

For administrators managing extensive environments, PowerShell scripts can automate the detection and removal of duplicate files based on file hashes or specific naming conventions.

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Frequently Asked Questions

Can I recover duplicate documents if I accidentally delete the wrong one in SharePoint?

Yes, deleted documents are automatically moved to the SharePoint site's Recycle Bin. They remain there for 93 days by default, allowing you to easily restore them if a mistake is made.

Does SharePoint Online have a built-in 'Find Duplicates' tool?

No, SharePoint Online does not currently have a native, single-click feature specifically for finding duplicates. Users must rely on search, sorting by metadata, or using PowerShell and third-party tools.

How can I prevent duplicate files from being uploaded in the future?

You can prevent duplicates by enforcing version control within your document libraries. This encourages users to upload new iterations as versions of an existing file rather than entirely new files. Additionally, setting up a clear folder structure and naming convention helps minimize accidental duplicate uploads.

Can third-party tools help find duplicates in SharePoint?

Yes, numerous third-party SharePoint migration and governance tools exist that can scan your entire site collection, identify duplicate files based on content hashes or metadata, and provide a secure, automated way to clean them up.

Document & File Issues