OPINION - HTTP versus HTTPS versus HTTP/2 performance test with 360 images
This test is a similar to the https://www.httpvshttps.com/ website but also shows HTTPS without HTTP/2 (i.e. over HTTP/1.1). For more details see this blog post.
I also have a similar page showing the same test for just 36 images, which is perhaps more representative of the typical web page.
Images will load below.