Microsoft SharePoint and Microsoft OneDrive: New PDF compression feature

Microsoft SharePoint and OneDrive will introduce a PDF compression feature in April-May 2025, allowing users to reduce PDF file sizes with three compression levels. The feature will be available by default, and no admin action is required. Users can compress PDFs up to 300 MB. Coming soon: Users will be able to use the new Compress feature to reduce the file sizes of PDFs stored on Microsoft OneDrive for the web or Microsoft SharePoint. Users can choose from three different compression levels. This message is associated with Microsoft 365 Roadmap ID 487440. When this will happen: Targeted Release: We will begin rolling out late April 2025 and expect to complete by early May 2025. General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out early May 2025 and expect to complete by mid-May 2025. How this will affect your organization: To compress PDF files for a smaller size: 1. Open a PDF in OneDrive for the web (in SharePoint, go to the document library and choose Preview): 2. Select the Compress button at the top of the screen: View image in new tab 3. Select a compression level and then select Save a copy to save the compressed file: View image in new tab A progress notification will appear at the bottom of the screen. After the compression is complete, select Open from the notification to view the compressed file: FAQ What is the quality and subsampling for each compression level? We offer three levels of image compression. All use lossy compression and chroma subsampling to reduce file sizes while maintaining visual quality. The options are:  View image in new tab Light compression: Apply 4:2:0 color subsampling and reduce 25% of image pixels.  Medium compression: Apply 4:2:0 color subsampling and reduce 50% of image pixels.  Heavy compression: Apply 4:2:0 color subsampling and reduce 75% of image pixels. Users can compress one PDF at a time. The original file must be smaller than 300 MB. This feature is on by default. What you need to do to prepare: Note: Some users may see this feature before other users in […]

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