This update was a long time coming. We no longer prevent you from uploading comic images over the file size limit - instead, we automatically compress images that are over the limit.
For example: before, on a comic without a subscription, if you tried to upload an image that was 1 MB in size, we wouldn't let you because it was over the limit. Now, if you try to upload a file that is 1 MB, we allow it and automatically compress it.
The compression quality is very good, and for donators and premium subscribers, if you somehow manage to go over your file size limit, we use the maximum quality possible. Images that end up getting automatically compressed may end up over the limit, but we still allow them to be uploaded anyway.
Here is an example of a page automatically compressed by the new uploader:
Before (1.6MB) vs After (641KB):
Credit to Riverside Extras
for the beautiful chapter cover image.
The compressed image is nearly 1MB or 2/3 smaller than the original.
As you can see, this is a very high detail image, and the resulting quality is very good. This is the compression being used on free comics. The quality on donator and premium comics is even higher, but since the original image is under the 2MB limit for donators and the 5MB limit for premium subscribers, the image wouldn't be compressed by the new system for a donator/premium comic anyway; the original would be uploaded untouched.
This change benefits everyone - free users and subscribers - by removing the hassle of the upload limits while maintaining a very high image quality. Donator and premium comics continue to have very high file size limits for comic images that will allow them to upload their comics at a completely lossless image format. Learn more about Donator and Premium subscriptions