Thread:Talk:Requests for comment/Standardized thumbnails sizes/Potential client: Extension:MultimediaViewer/reply (3)

Be very, very careful about using "full-size" image. Sometimes that's a 4MP or 8MP photo, but sometimes it's a 100MB TIFF file. And of course sometimes it requires rotation for display in browser, or transformation to a JPG, PNG, etc. Generally... never EVER use the original file as anything but a download link, unless the API happens to return you the original file when you ask for a rendered thumbnail...