|
|
|
|
|
|
by derefr
1180 days ago
|
|
|
1. If the thing that's going to be loaded isn't a JPEG, but rather a PNG, or WebP, or SVG, or MP4... 2. These are usually delivered embedded in the HTML response, and so can be rendered all at once on first reflow. Meanwhile, if you have a webpage that has an image gallery with 100 images, even if they're all progressive JPEGs, your browser isn't going to start concurrently downloading them all at once. Only a few of them will start rendering, with the rest showing the empty placeholder box until the first N are done and enough connection slots are freed up to get to the later ones. |
|
|