I would like to use the same icon set as another application that our company use for consistency across the customer experience. The icons I have been provided with are 48px by 48px PNG files. I uploaded one of the icons to use as a custom request icon and the image appears blurry in the customer portal. I downloaded the image using "save image as..." in the browser from the customer portal and it is still a 48px by 48px PNG but it is visibly blurry. Like it was processed as part of the upload. I've seen this sort of change before in image conversion but only when a PNG file has been saved as a JPG. Here are the 2 images:
- Original:

- Following Upload

Any thoughts about what could be causing this? And how I might prevent it?