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How to turn off rounded corners in preview when viewing a PDF

I just upgraded to Tahoe and am not happy about how Preview by default rounds the corners of PDFs when viewing them. This is unacceptable. How do I turn this off?

PDFs are supposed to look consistent no matter how they're viewed and rounding the corners on a document is totally unneccesary and compromises the design of a PDF.

Overall, I'm not a huge fan of the UI updates in Tahoe and iOS 26. Liquid Glass is highly distracting. The rounded corners everywhere waste space. But while I can tolerate some of the new UI elements, changing how a PDF is viewed is where I draw the line.

Please for the love of God get rid of rounded corners in preview PDFs in the next Tahoe update.

MacBook Pro 14″, macOS 26.0

Posted on Sep 16, 2025 7:05 PM

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Level 10

137,909 points

Posted on Oct 4, 2025 8:47 AM

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Sep 16, 2025 7:12 PM in response to chinois

It's part of the new UI and cannot be changed by the user.

“We” are users like you and have no power to implement any suggestions. To have Apple consider your feedback, submit it here:

Feedback - macOS - Apple

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Level 10

137,909 points

Oct 4, 2025 3:57 AM in response to maurizio277

maurizio277 wrote:

Thanks!!!

This seems reassuring.

I do not see any round corners... How is that?

You're welcome. The round corners are only the frame of the Preview app. They do not change a PDF or image file. If the round corners overlap the file you can simply resize the Preview window or change the Zoom level of the file.

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How to turn off rounded corners in preview when viewing a PDF

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