What size should the images be for my items?
Edited
Images in the BidWrangler bidding platform display at a 4:3 aspect ratio, such as a 1920 x 1440 resolution. Images in other sizes still import. The platform shows each image inside a 4:3 frame and fills the empty space around it.
Why Do My Photos Have Black Bars at the Top and Bottom?
A photo that is wider than 4:3 shows black bars at the top and bottom of the frame. For example, a 16:9 photo is wider than 4:3. A photo that is narrower than 4:3 shows a background at the sides of the frame. To make your photos fill the frame, set your camera to a 4:3 aspect ratio before you take the photos.
What a Narrower Photo Looks Like Next to a 4:3 Photo
Below is an example of a lot with a narrower resolution next to one following the 4:3 aspect ratio:

