Which wordpress plugin can change image size (WxH)?

Question

Images

Hello!
You need to display a picture of a certain size (WxH), but so that it is not cut off, but a white background is added (as on opencart).
Like this one: https://ru.wordpress.org/plugins/jresizr/ only it is necessary that he does not change all the pictures, but only those that are needed (code in the php template).

Answer 1

Well, you can take this plugin and tweak it for yourself.
It has not been updated for 6 years. Feel free to edit.
There, as I understand it, all the functionality you need is already there.