DjVu is excellent format for e-Comics and e-Magazines.
Check out the Amazing Science Fiction Stories, Amazing Stories, Planet Stories, Weird Tales and more.. in DjVu format: https://commons.wikimedia.org/wiki/Category:Scanned_English_...
Note that PDF :
1. Supports JPEG2000 compression, which is very similar to what DjVu uses for images
2. Supports JPEGs compressed with jpegli which is competitive with DjVu at higher quality settings
3. Supports JBIG2 for bi-level images, which is very similar to what DjVu uses for bi-level layers.
Note that PDF :
1. Supports JPEG2000 compression, which is very similar to what DjVu uses for images
2. Supports JPEGs compressed with jpegli which is competitive with DjVu at higher quality settings
3. Supports JBIG2 for bi-level images, which is very similar to what DjVu uses for bi-level layers.