Image gallery would be for me a fantastic tool. Pb: PSI don’t like it.
For example, the page below is rated 72 without image gallery and gets a poor 39 with 3 image galleries on it.
PSI gives me a suggestion to solve the pb : adding Preload key requests.
I am not sure how to use it.
Do you think it could work? Do you know where & which code I should add?