Making sure your cover image looks great on high density displays with responsive design

I am facing a significant issue that I have not been able to find a solution for yet, so I'm hoping you might be able to help.

My work involves creating websites, and I am in need of making the cover background image responsive (covering the entire page). I initially used the following code:

/* Location of the image */
  background-image: url(main.jpg);

  /* Background image is centered vertically and horizontally at all times */
  background-position: center center;

  /* Background image doesn't tile */
  background-repeat: no-repeat;

  /* Background image is fixed in the viewport so that it doesn't move when 
     the content's height is greater than the image's height */
  background-attachment: fixed;

  /* This is what makes the background image rescale based
     on the container's size */
  background-size: cover;

  /* Set a background color that will be displayed
     while the background image is loading */
  background-color: #464646;

This code works well, even when I resize the window. However, I encountered an issue on high-resolution screens like iPad or iPhone. On these devices, the image appears very zoomed-in, pixelated, or unfocused. Initially, I thought this was due to low image resolution, but upon realizing that the image is nearly 5K, I understood that wasn't the case. I aim to achieve responsiveness similar to that seen on this site.

I would greatly appreciate any assistance as I need to resolve this promptly!

Thank you.

Answer №1

To customize the background-image on high-resolution screens like retina displays, you can set up a media query in CSS.

For more information, visit CSS-tricks.

Mediaquery for retina displays:

@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) { ... }

Future-proofing:

@media
only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and (   min--moz-device-pixel-ratio: 2),
only screen and (     -o-min-device-pixel-ratio: 2/1),
only screen and (        min-device-pixel-ratio: 2),
only screen and (                min-resolution: 192dpi),
only screen and (                min-resolution: 2dppx) { ... }

Queries:


Refer to this discussion for similar insights.

Answer №2

If you're encountering this issue, it might be due to the combination of using background-attachment:fixed with background-size: cover on iOS devices. To fix this, you can try adding the following CSS code:

/* for handling background-size:cover on iOS */
@media only screen and (orientation: portrait) and (device-width: 320px), (device-width: 768px) {
    header {
      -webkit-background-size: auto 150%;
      background-attachment: scroll;
    }
}
@media only screen and (orientation: landscape) and (device-width: 320px), (device-width: 768px) {

    header {
      -webkit-background-size: 150% auto;
      background-attachment: scroll;
    }
}

You can find more information and the initial solution here on Stack Overflow.

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