Why do my images sometimes look blurry?

Question: Sometimes images uploaded with the Upload/Embed Image tool look a bit blurry when compared to when I use the native Canvas tool. Why is this?

Answer: The UEI reduces the size of large images and also compresses the image. It is trying to walk a fine line between having a clear image and optimizing that image to load faster.

Canvas on the other hand just uploads the original image without any optimization for load time.