Photo white border and resize

[Sridhar7]

I tried to add white border to photo by photoshop canvas size option but after adding border and shared to my mobile the photo size looks smaller but orginal photo is portrait size and even I tried many times to increase the size of photo but once viewing from mobile still same problem, I want to get portrait size 

[Nancy OShea]

• What is the height and width of your original image in pixels?
• What size border do you require?

In this example, my original image was 1500 x 1500 px. To allow for a 50px border all around, I added 100 pixels to the canvas' height and width.  This preserves the original aspect ratio and does nothing to distort the image.  See screenshot.

I do not know what you mean by viewing from mobile, size looks smaller. 

Are you viewing at 100% zoom?

[Sridhar7]

The image is portrait size 1080×1383  and I wanted to add customized white border for it height 1 inch and width 3 inch.  I'm  editing from my macbook so once I added border to photo then I shared that picture through by email to my mobile, once I opened that edited image in my mobile the photo it's not in portrait size anymore and it's in 4:3,

For example I attached the screenshot here of orginal image and border and I wanted to get portrait size image with border ...

[Edited by moderator for clarity and language translators.]

 

[Nancy OShea]

This has nothing to do with Photoshop. 

Ask your e-mail provider what they're doing to shared images.

[gener7]

I want to throw in this tip: When applying a border, checkmark "relative" on Canvas Size to directly enter your border size: