Hello @ONE_Orinda ,
Similar to our advice when it comes to mobile image sizing, if you're wanting absolute consistency with image sizes, you'll want to set the size manually by editing the images. We have a few articles regarding this:
Determine an image's file size and dimensions
Edit images in the Library
Resize an image in an email for an optimal look on desktop and mobile
Once you've set your images to an explicit size, you can then insert into your email or other campaign type. Do not drag out or in the corners after inserting, otherwise it will cause the image to no longer be the same consistency.
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