That's a good question. I'm not sure what is the right answer to your question. I'll do some investigation and get back to you if I discover an good answer. You should email the people at iPage as they probably can answer it..
Why are jpgs better than gifs in this instance..
I ask as I do not know a lot about the pros and cons of different image formats - thanx...
Typically jpgs make for clearer and cleaner photos while gifs are better suited for clip art and drawings (plus it supports transparencies). PNG is the best of both worlds but older browsers don't support it so you need to use it wisely (translation: not in an ecommerce application IMHO)..
That's kinda the nutshell version. Hope it helps...
I adopted a convention to use a square gif for product images making all the displays nice and neat and if the original pic for a product is not square, paste it into a square with transparency around it..
And, with the Big Images contribution, the popup image can be any proportion; so if the product needs a bigger image and I have one, it is usually a jpg..
That way, the product has a gif and a jpg with the same name but different type extensions, making image directory maintenance saner. [cat_11.gif, cat_11.jpg]..
I would like to use JPG files for larger images (the image that opens when a customer clicks on "Click to Enlarge"), while using GIF files for the thumbnails. Is this possible in osCommerce?.
If so, how do I set it up?..
You need to use one of the multiple image contributions. Search the contribution section. There are several..
Why use GIF though? If we're talking about product images (actual photos) jpg (or png) is the best way to go...