I've been searching for ages and haven't yet found anything.

I've made my mum a website for her preschool and she wants their logo and the OFSTED outstanding logos at the bottom of every page, however each page is a different size and I'm struggling to get the correct size for the page.

At the moment I've just used one set size but I'm getting problems like this where theres lots of space at the bottom.

Does anyone know a way of calculating/getting the correct size for the page so I can go and make it in photoshop?