
Hi @Deepak Subhedar,
I checked the default Page Size of PDF on Edge, Chrome, and Firefox respectively, and found that the default sizes of different browsers are different, and the sizes of different PDF files in the same browser are also the same. So, we think this is actually by design. If you still want to change it, you can enter "Alt+Shift+I" in the Edge interface to submit feedback.
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Best Regards,
Jinxin Wang