batch resize and fit to canvas without distortion

[Nezih26406623c8bd]

I have over 2000 web images that I need to resize for an e-commerce site. As a batch, I need to fit the entire picture onto a 2000x2000 white canvas while keeping the aspect ratio of the pictures.I showed in the picture what i want to do. I wonder how can I do

[c.pfaffenbichler]

Have you tried File > Automate > Fit Image? 

[Nezih26406623c8bd]

I created a new 2000x2000 layer behind the picture and tried that, but nothing happened.

[Nezih26406623c8bd]

It worked for a few pictures, but I have a lot of pictures with different resolutions, so some pictures are negative.

[c.pfaffenbichler]

Please include »Canvas Size« after the »Fit Image«-step. 

Please describe the actual process and post screenshots with ALL pertinent Panels visible to illustrate and provide some of the images that do not yield the desired results. 

[Stephen Marsh]

If you search the forum, resizing to a square is a common request:

https://community.adobe.com/t5/photoshop-ecosystem-discussions/how-to-add-800x800px-white-background...

https://community.adobe.com/t5/photoshop-ecosystem-discussions/bring-a-batch-of-photos-into-a-square...