Currently all avatars that are displayed are using the original uploaded file in its original size, so for displaying a 24x24 User Avatar we load a 500 KB File sometimes. Also we should look at optimising PNG and eventual WebP There is a huge potential on saving bandwidth and loading time :  For all solutions we should align avatar sizes (i found 24, 26, 32, 36 , etc.). Also resized avatars will help a lot with rendering performance as the browser doesn't need to do it anymore. ## Potential solutions : ### CDN We use a CDN to route our traffic through for .com, might be a quick win for now. ### Resize + Caching on the fly Our Backend is capable on a routing basis to deliver different predefined sizes. As soon an avatar is created the file will be saved + cached. Could be done also through NGINX http://nginx.org/en/docs/http/ngx_http_image_filter_module.html We should be aware about cleaning up avatars, if new versions are uploaded etc. Also use only predefined sizes otherwise DDOS is easy. ### Create them during upload Do the creation of the different sizes during upload. Problematic with existing avatars.