[Koha] Uploading local cover images

[Cab Vinton]

Hi, All --

I've searched the manual & list archives, but wasn't able to find an
answer to this question.

What are best practices for uploading local cover images? I'm thinking
specifically of image size and aspect ratio.

According to github
(https://github.com/Koha-Community/Koha/blob/master/tools/upload-cover-image.pl):

"This script is called and presents the user with an interface
allowing him/her to upload a single cover image or bulk cover images
via a zip file.

Images will be resized into thumbnails of 140x200 pixels and larger
images of 800x600 pixels. If the images that are uploaded are larger,
they will be resized, maintaining aspect ratio."

Is this information still accurate? Our source images are typically
several megabytes in size & we don't want to spend time preprocessing
if this is unnecessary.

Any other tips not covered in the manual?
(https://koha-community.org/manual/18.11/en/html/tools.html#upload-local-cover-image-label)

Many thanks in advance!

Cab Vinton, Director
Plaistow Public Library
Plaistow, NH