View single post by Eric
 Posted: Fri Oct 11th, 2019 17:00
Eric



Joined: Thu Apr 19th, 2012
Location: United Kingdom
Posts: 4424
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 Quick (crude editing) example to show a png with its transparent cutout, which enables the image to be overlayed over other images...in this case just the blue webpage background 'image'....



.......versus a jpeg where the cutout is automatically 'backfilled' with the default background colour...here white....which then itself becomes part of the overlay.








As JK said the png file is bigger than the jpg. In the case of this image about 10%. But colour content will influence the file compression and resulting sizes.

Last edited on Fri Oct 11th, 2019 17:17 by Eric



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Eric