Multiple “apple-touch-startup-image” resolutions for iOS web app (esp. for iPad)?

Question

I\'ve written an HTML5-based iOS web application and all seems to be working well, but I\'m trying to polish it up with multiple startup screens. The iPhone/iPod touch works

Answer 1

Apparently the startup screen only works under the following conditions

1) must be the exact size required by the device. 2) the device must be in portrait orientation when the app is launched. 3) some sources say png only but jpg seems to work now.

Answer 2

iPhone 6 and iPhone 6+

<link href="launch6.png" media="(device-width: 375px)" rel="apple-touch-startup-image">
<link href="launch6plus.png" media="(device-width: 414px)" rel="apple-touch-startup-image">

From this link: http://www.mobilexweb.com/blog/safari-ios8-iphone6-web-developers-designers

Answer 3

Complete meta:

<!-- Icons -->

<!-- iOS 7 iPad (retina) -->
<link href="icon-152x152.png"
      sizes="152x152"
      rel="apple-touch-icon">

<!-- iOS 6 iPad (retina) -->
<link href="icon-144x144.png"
      sizes="144x144"
      rel="apple-touch-icon">

<!-- iOS 7 iPhone (retina) -->
<link href="icon-120x120.png"
      sizes="120x120"
      rel="apple-touch-icon">

<!-- iOS 6 iPhone (retina) -->
<link href="icon-114x114.png"
      sizes="114x114"
      rel="apple-touch-icon">

<!-- iOS 7 iPad -->
<link href="icon-76x76.png"
      sizes="76x76"
      rel="apple-touch-icon">

<!-- iOS 6 iPad -->
<link href="icon-72x72.png"
      sizes="72x72"
      rel="apple-touch-icon">

<!-- iOS 6 iPhone -->
<link href="icon-57x57.png"
      sizes="57x57"
      rel="apple-touch-icon">

<!-- Startup images -->

<!-- iOS 6 & 7 iPad (retina, portrait) -->
<link href="startup-image-1536x2008.png"
      media="(device-width: 768px) and (device-height: 1024px)
         and (orientation: portrait)
         and (-webkit-device-pixel-ratio: 2)"
      rel="apple-touch-startup-image">

<!-- iOS 6 & 7 iPad (retina, landscape) -->
<link href="startup-image-1496x2048.png"
      media="(device-width: 768px) and (device-height: 1024px)
         and (orientation: landscape)
         and (-webkit-device-pixel-ratio: 2)"
      rel="apple-touch-startup-image">

<!-- iOS 6 iPad (portrait) -->
<link href="startup-image-768x1004.png"
      media="(device-width: 768px) and (device-height: 1024px)
         and (orientation: portrait)
         and (-webkit-device-pixel-ratio: 1)"
      rel="apple-touch-startup-image">

<!-- iOS 6 iPad (landscape) -->
<link href="startup-image-748x1024.png"
      media="(device-width: 768px) and (device-height: 1024px)
         and (orientation: landscape)
         and (-webkit-device-pixel-ratio: 1)"
      rel="apple-touch-startup-image">

<!-- iOS 6 & 7 iPhone 5 -->
<link href="startup-image-640x1096.png"
      media="(device-width: 320px) and (device-height: 568px)
         and (-webkit-device-pixel-ratio: 2)"
      rel="apple-touch-startup-image">

<!-- iOS 6 & 7 iPhone (retina) -->
<link href="startup-image-640x920.png"
      media="(device-width: 320px) and (device-height: 480px)
         and (-webkit-device-pixel-ratio: 2)"
      rel="apple-touch-startup-image">

<!-- iOS 6 iPhone -->
<link href="startup-image-320x460.png"
      media="(device-width: 320px) and (device-height: 480px)
         and (-webkit-device-pixel-ratio: 1)"
      rel="apple-touch-startup-image">

Answer 4

Spent some time figuring out how to make splash screen for the new iPad (Retina), here is my tested and working solution for both orientation of the new iPad (Retina).

P.S. before posting this I've tested already given solutions and they didn't worked.

<!-- iPad (Retina) (Portrait) -->
<link href="/img/ios/apple-touch-startup-image-1536x2008.png" media="screen and (min-device-width: 481px) and (max-device-width: 1024px) and (orientation:portrait) and (-webkit-min-device-pixel-ratio: 2)" rel="apple-touch-startup-image" />

<!-- iPad (Retina) (Landscape) -->
<link href="/img/ios/apple-touch-startup-image-2048x1496.png" media="screen and (min-device-width: 481px) and (max-device-width: 1024px) and (orientation:landscape) and (-webkit-min-device-pixel-ratio: 2)" rel="apple-touch-startup-image" />

Answer 5

If you want to target the retina display I found a solution and blogged about it here: http://paulofierro.com/blog/2011/8/31/icons-and-splash-screens-for-ios-web-apps-retina-displays-also-welcome

Basically the sizes property and media queries will not work. You have to inject the high-res startup image via JavaScript once your page is loaded. Hacky but works.

Answer 6

This may be obvious to some but the startup image would not work for me unless I added I added a shortcut to the home screen, ran it from there, and had the following code:

<meta name="apple-mobile-web-app-capable" content="yes" /> 

This page was useful for figuring this all out: http://lineandpixel.com/blog/ios-web-app-icons-and-startup-images