HTML and CSS Reference
Smaller image files
The Network tab records all images that are fetched for use on index.html . We
can see that the images that are fetched for the index.html page in the publish
folder are noticeably smaller in size.
In the following screenshot, the bottom section of the screenshot shows the list of
images in the publish folder, which are noticeably smaller than the images used in
our original project (listed in the top section of the screenshot):