Quote Originally Posted by enzo-ita View Post
Thank for answering.
I did not notice in the installation instructions that the small size images will no get the watermark, and actually it is not so. They get the watermark but only on the attribute images and not in the product listing. There is the setting that allow you to select if watermark smalll images or not, however. May be I am not understanding something but as far as I know we have three image classe: 1) normal 2) medium 3) large. Plus there are the 4) attributes images. ON 2,3,4 the images are watermarked on 1 no. If this is how it should work it is ok for me since this is a real piece of softwrae howver, but I would like a confirmation or a suggestion on what to watch to mek it working correctly.
It remains also to be understood if google page speed is just trowing scores without reasons or if they are right, and if they are right how much this will influence the ranking.
Thanks
enzo
I believe that in the aggravation of trying to get the desired result(s) that my previous post was also not understood. So, for you to see what is going on, I suggest the following test to prove things to yourself. First of all, small is a relative term. The popup images could be displayed as the smallest size image, but that would defeat the purpose of someone clicking to see a "larger" image. The thumbnails (small) images could be displayed larger than any other picture, but then again, that too would not make sense because they are supposed to be small, not large.

So, now comes the "how's it work" part. If you upload the single largest resolution picture of a product using IH4, then that image will be resized as necessary for viewing as a small (think thumbnail), medium (typically the product information), and large (popup image for clicking on an image to zoom in on it). The original file remains on the server and from what I have seen, if the original image has a resolution lower than the larger image, then no resizing is performed on the image, because it doesn't need to be shrunk, but that's another story.

Now, when viewing the admin window for IH4 after that upload, there are three image locations that can have an image applied. The default image, the medium image and the large image. If no medium or large image are uploaded, then the default image applies to all of them. If a medium sized image is then uploaded, then the medium image will be used wherever medium is identified in the code, and the default image will be used for all other images. Now if a large image is loaded, then the large image will be used wherever large is used, the medium wherever medium is used, and the remaining locations will use the default image (yes I know small).

Regarding the watermark, and again, IH4 only works on images that are generated using the ZC PHP code of zen_image, there are three settings related to watermarks, one for each sized image... The watermark is applied to the image(s) that are "designated" as that size. For example, typically on the main/home page the small images are coded to be used in say the specials, new, and featured product listings as well as on the side(s). This is also true on the product_listing page(s). The medium image is typically used for the main product image when looking at the product image field. So, let's assume that you only wanted a watermark to be applied to small images, then that setting when turned on, would apply the watermark to each of the above locations except on the product info page for the main product. It would show for the additional images though...

Now, I mentioned a "test"... Based on the above discussion, upload a completely different image to say the medium image position for the product and navigate through the store to see where that image is used/applied. It ought to appear as the main product image on the product info page, but as you insert/swap images around, you should be able to see the results and prove to yourself, which image is displayed at which location and whether there is a problem with your template's display of the main image or not.