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Different levels of compression for images
pubblicato da softpillowSTAFFMOD il 1 maggio, 2025 alle 5:34AM
A mod has, in previous conversation said that images uploaded to this site may receive different amounts of loss in quality due to the compression that occurs on this site. I can no longer remember or find that previous conversation, but I would like to know if someone (preferrably a mod) can expand on why that happens, and more importantly if there is any way to predict which images are more likely to experience greater amounts of loss in quality (due to compression) from uploading. And in consequence, also which images are more likely to experience lesser if not almost negligible changes in quality.
One way this would be beneficial is being able to predict how an image is actually going to look like once its uploaded (which helps determine the "true" - or eventual quality of an image that you are considering to upload)....unless there is no way to know/its all just random?
Risposta da Travis Bell
il 2 maggio, 2025 alle 12:34PM
Hi @softpillow, the original source JPEG's are encoded at 85% quality, standard across the board. However, this may not be the file you see in your browser since we do serve optimized WEBP files if your browser asks for them.
Most browsers have an extension that will let you download the source JPEG. This is one for Chrome as an example. This can let you compare the two versions side by side. Bottom line though, if you're only concerned with JPEG's, they're encoded at 85%.
Risposta da softpillow
il 3 maggio, 2025 alle 3:27PM
How do I know if my browser asks for them (optimized WEBP files)? (eg. Is it based on what type of browser I'm using? eg. chrome vs firefox vs opera vs brave, etc.)
or do i just have to test it out myself and see if images from this site look the same downloaded (source JPEG) vs. viewed on a browser/internet/url?