Pretty rad!!!! Look, it’s got a kitten on it! Holding a gun!! Awesome!!
I want to create a nice bookmark icon that people can add to their Home screen on Apple devices like iPhones and iPads for quick access to my awesome site.
The screen resolution (in pixels) for Apple iOS devices varies. Here’s a rundown:
iPhone 4 640 × 960 @ 326 ppi (pixels per inch)
iPhone 3G 480 × 320 @ 163 ppi
iPad 1024 × 768 @ 132 ppi
The recommended icon size for a web clip icon varies with the different types, too:
iPhone 4 114 × 114px (high resolution)
iPhone 3G 57 × 57px
iPad 72 × 72px
Although these are the guidelines, all these devices will automatically rescale your image to the right dimensions. So you really only need to make one, the largest, sized at 114 × 114px.
第2步 - 做一个图标！
I’m going to design my icon at four times the size of the resolution I need so I can apply some detail. I’ll scale the image down later.
My document is 456 x 456px at 72dpi. I’ve also placed some guides 80px from the edge of the document to center the artwork. The grey area is representative of how the Apple device will apply rounded corners (20px for a 114 x 114 icon) to the image (yes, it does this for you!!) And the nice glass reflection effect, too!!
This is just there as a guide and won’t be in the final image.
Since we’re working at four times the size this works out at an 80px rounded corner (the width of my guides).
So here is my quick icon design! The shape is centered inside the guides and it has a little bit of texture to it.
OK, so it’s not going to win any awards but what the hey! You could use your company logo or whatever you like. As long as it’s better than this you're good to go!!
Flatten the artwork and go to Image > Image Size and scale the icon down to 114 x 114px (or by 25%).
Go to Save For Web And Devices and save the image as a 24-bit PNG file. You can call it what you like.
第3步 - 把在互联网上
Upload your PNG image into the root folder of your website. This will be the same place as your index.html file. If you're using Wordpress this will be in your ‘Theme’ folder, something like wp-content/themes/your-theme.
All you have to do is add this line of code to the section of your HTML files. Inside Wordpress this would go in your ‘Theme’ header.php file.
The rel="apple-touch-icon" in the link is telling the Apple device that there is an image available to be used as a Web clip icon.
Here’s my code inside Coda.
Now when somebody uses the ‘Add To Home Screen’ function on your site inside iOS Safari they will see this screen with your icon! You may find you have to wait a second as Safari loads the image.
Once they add it it will appear on their Home screen as an icon. Here it is on iPhone 3GS:
And on iPhone 4. Because of the Retina display this should capture some real detail:
All you have to do now is sit back and wait for the money to roll in! Sweet!
Seriously though, this can add a nice little professional touch to a website and the fact that the Apple device adds all the effects for you makes it really easy.
For the past 20 years Toby has worked as a professional guitarist, programmer and producer. Clients include Sir Paul McCartney, George Michael, Shirley Bassey, Yusuf Islam, Giles Martin as well as the London 2012 Olympic Ceremonies.
He has also worked extensively in TV, Advertising and Film. As well as composing himself he has also worked alongside many composers like David Arnold, Clint Mansell and Simon Franglen on many major film releases.
An expert in synthesis and sound design Toby has also lectured for Apple on their Logic Pro music software which he has used since its days on the Atari. He has also worked as an educator for the International Guitar Foundation and the Brighton Institute of Modern Music teaching guitar.
In his spare time (of which there is very little) he moonlights as a motion graphics artist specialising in Cinema 4D and After Effects.