Banner Getting Scaled on YouTube

Unless they're doing something insane, they're using browser directives - so it's going to be based on whether the manufacturer broadcasts a pixels ratio of 2.
I'll have to take a look at the JavaScript on the channel page and see what I can find. I don't think you can get the user's screen width/height in inches using JS, but I am also not aware of any "pixel ratio" attribute in JS.
 
It's not JS, it's a CSS3 media query
Oh. I didn't know CSS had the ability to pull data from the user. I thought it could only be used to tell the browser what to do. Thanks for the info! This will probably even help my own websites!
 
Oh. I didn't know CSS had the ability to pull data from the user. I thought it could only be used to tell the browser what to do. Thanks for the info! This will probably even help my own websites!

It's not actually pulling data from the user - it's CSS that's scoped to particular directives (such as min-width, max-width, etc). Then the browser itself only executes that portion of the CSS if it meets those criteria.

See more: http://www.w3.org/TR/css3-mediaqueries/
 
It's not actually pulling data from the user - it's CSS that's scoped to particular directives (such as min-width, max-width, etc). Then the browser itself only executes that portion of the CSS if it meets those criteria.

See more:
Right, but it's pulling info from the user's browser. It's a conditional that relies on info from the user, so it has to pull the info.
 
Hello! Can anybody help me? I made a banner for my youtube channel but it looks blurry... I've read what u guys were talking about but I dont really know what can I do. The thing is that I have seen other banners and they dont look blurry, so there has to be a way to get it sharp and clear. But I think I've created the banner as it is supposed to be... I mean, with the measures that Youtube says, etc... Do you guys have any idea?
 
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