why is it that when a digital picture is loading on a monitor it shows up blurry and then clear instead of showing up top to bottom like a printed out picture?
In: Technology
This is a stylistic choice that web designers put in. They store two copies of the picture — one extremely low quality (and therefore low file size and fast to load), and the original or high quality version. They will quickly load the low quality one and put a huge blur on it, and then progressively unblur it as the high quality version loads, until they finally switch to it.
This is something you do when you want to prevent people from thinking that the site isn’t loading. If you just displayed nothing until the picture loaded, you might find some users thinking it’s broken and mashing the refresh button, making the whole process take longer. By including this lazy-loading mechanism, users can “see” their picture loading, so they’re less likely to assume there’s a problem.
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