What size should apple-touch-icon.png be for iPad and iPhone?

Solution 1:

Updated list December 2019, iOS13 One icon for iOS 180x180 px and one for android 192x192 px (declared in site.webmanifest).

<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
<link rel="manifest" href="/site.webmanifest">

#### site.webmanifest
{
    "name": "",
    "short_name": "",
    "icons": [
        {
            "src": "/android-chrome-192x192.png",
            "sizes": "192x192",
            "type": "image/png"
        }
    ],
    "display": "standalone"
}

Deprecated list October 2017, iOS11

List for iPhone and iPad with and without retina

<!-- iPhone(first generation or 2G), iPhone 3G, iPhone 3GS -->
<link rel="apple-touch-icon" sizes="57x57" href="touch-icon-iphone.png">
<!-- iPad and iPad mini @1x -->
<link rel="apple-touch-icon" sizes="76x76" href="touch-icon-ipad.png">
<!-- iPhone 4, iPhone 4s, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6s, iPhone 7, iPhone 7s, iPhone8 -->
<link rel="apple-touch-icon" sizes="120x120" href="touch-icon-iphone-retina.png">
<!-- iPad and iPad mini @2x -->
<link rel="apple-touch-icon" sizes="152x152" href="touch-icon-ipad-retina.png">
<!-- iPad Pro -->
<link rel="apple-touch-icon" sizes="167x167" href="touch-icon-ipad-pro.png">
<!-- iPhone X, iPhone 8 Plus, iPhone 7 Plus, iPhone 6s Plus, iPhone 6 Plus -->
<link rel="apple-touch-icon" sizes="180x180" href="touch-icon-iphone-6-plus.png">
<!-- Android Devices High Resolution -->
<link rel="icon" sizes="192x192" href="icon-hd.png">
<!-- Android Devices Normal Resolution -->
<link rel="icon" sizes="128x128" href="icon.png">

Update Oct 2017 iOS 11: iOS 11 checked, iPhone X and iPhone 8 introduced

Update Nov 2016 iOS 10: New iOS version iPhone 7 and iPhone 7plus introduced, they have the same display resolution, dpi, etc as iPhone 6s and iPhone 7plus, until now no changes found respecting the update 2015

Update Mid 2016 Android: Add Android Devices to the list as the apple-touch links are marked as deprecated by Google and will be not supported anytime for their devices

<!-- Android Devices High Resolution -->
<link rel="icon" sizes="192x192" href="icon-hd.png">
<!-- Android Devices High Resolution -->
<link rel="icon" sizes="128x128" href="icon.png">

Update 2015 iOS 9: For iOS 9 and iPad pro

<link rel="apple-touch-icon" sizes="167x167" href="touch-icon-ipad-pro.png">

The new iPhones (6s and 6s Plus) are using the same sizes as the iPhone(6 and 6 Plus), the new iPad pro uses an image of size 167x167 px, the other resolutions are still the same.

Update 2014 iOS 8:

For iOS 8 and iPhone 6 plus

<link rel="apple-touch-icon" sizes="180x180" href="touch-icon-iphone-6-plus.png"> 

Iphone 6 uses the same 120 x 120 px image as iphone 4 and 5 the rest is the same as for iOS 7

Update 2013 iOS7:

For iOS 7 the recommended resolutions changed:

• for iPhone Retina from 114 x 114 px to 120 x 120 px
• for iPad Retina from 144 x 144 px to 152 x 152 px

The other resolution are still the same

• 57 x 57 px default
• 76 x 76 px for iPads without retina

Source: https://developer.apple.com/ios/human-interface-guidelines/icons-and-images/app-icon/

Solution 2:

Use these sizes 57x57, 72x72, 114x114, 144x144 then do this in the head of your document:

<link rel="apple-touch-icon" href="apple-touch-icon-iphone.png" />
<link rel="apple-touch-icon" sizes="72x72" href="apple-touch-icon-ipad.png" />
<link rel="apple-touch-icon" sizes="114x114" href="apple-touch-icon-iphone4.png" />

This will look good on all apple devices. ;)

Solution 3:

With the iPad (3rd generation) there are now four icon sizes 57x57, 72x72, 114x114, 144x144.

Because retina icons are exactly double the size of the standard icons we really only need to make 2 icons: 114 x 114 and 144 x 144. By setting the retina sized icon to the corresponding standard icon iOS will scale them accordingly.

<!-- Standard iPhone --> 
<link rel="apple-touch-icon" sizes="57x57" href="touch-icon-iphone-114.png" />
<!-- Retina iPhone --> 
<link rel="apple-touch-icon" sizes="114x114" href="touch-icon-iphone-114.png" />
<!-- Standard iPad --> 
<link rel="apple-touch-icon" sizes="72x72" href="touch-icon-ipad-144.png" />
<!-- Retina iPad --> 
<link rel="apple-touch-icon" sizes="144x144" href="touch-icon-ipad-144.png" />

Solution 4:

The icon on Apple's site is 152x152 pixels.
http://www.apple.com/apple-touch-icon.png

Hope that answers your question.