You are 65k bytes over the unstrip post-expand size, which is 5 million bytes (5 mb). In short, you have too much stuff in the galleries on the page and you need to split them up via other pages.

@BronzeRattle Thank you! 2 questions:

* Would I be able to turn the sections of the gallery into templates and then put them on the page, or would that not work? If so, I will discuss on that wiki if the gallery should be split into different pages.

* Where did you find the unstrip post-expand size?

1. Not sure. I've played around a bit with transclusion, but not really with images (and definitely not that many), so someone can probably give you a more definitive answer.

2. If you go into Preferences and go to Editing, there is an option to use the Source Editor. If you preview the page, you'll see some page statistics before the preview.

I mean you have 3550 images on that page. 3550! That's crazy. And you want to add more?

It's not gonna work. You have to split up the page.

Much better would be to massively reduce the amount of images. Such an amount of images is unreasonable. It's also terrible for your visitors. It's not user friendly. Imagine someone visiting the site on a mobile...

I would never put more than 2-300 images on a page, and that's already a lot.

Hiding it in collapsibles doesn't make it less.

Turning it into templates neither.

You have to reduce the amount of images.