通过3G阻止移动网站图像压缩(Prevent mobile website image compression over 3G)

 我正在使用移动网站和某些设备（在我的特殊测试中，iPhone 4）在3G网站上浏览网站时，图像被压缩，看起来模糊不清。 当通过wifi访问网站（并清除缓存并退出Safari）时，图像按预期显示。 
 
 我们尽可能减少了图像大小而不会丢失质量（介于2到26KB之间），并在另一篇文章中添加了“无缓存”修复建议： 
 
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="pragma" content="no-cache">
 
 仍然没有运气！ 
 
 我们还有什么可以通过3G强制图像质量？ 
 
 谢谢，凯夫 

I'm working on a mobile website and on some devices (in my particular test, an iPhone 4) when visiting the site over 3G the images are compressed and look unacceptably fuzzy. When visiting the site over wifi (and clearing cache AND quitting Safari) the images appear as expected. 
 
We've reduced the image size as much as possible without losing quality (between 2 and 26KB) and added the 'no-cache' fix recommended on another post:
 
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="pragma" content="no-cache">
 
Still no luck!
 
Is there anything else we can do to force the image quality over 3G?
 
Thanks, Kev

原文：https://stackoverflow.com/questions/5714149