Board Thread:Support Requests - Designing Your Wiki/@comment-36535642-20191217124348/@comment-9605025-20191217154104

I believe you are misinterpreting the ICO specs. From what I can find online, it is not possible to have an ICO larger than 256 px. However, this does not mean the image is 256x256 px. What it means is that the total number of pixels is not larger than 256. 16x16 px gives you 256 pixels exactly so if you want the ICO to be a square (aspect ratio 1:1), that is as large as you can go. If you don't want the ICO to be a square, then you have more options. For example, it would be 32x8 px; which is an aspect ratio of 4:1.