picasa web的图片大小自定义

picasa相册的图片连接通常为下面的格式，可以说是没有规律可言：

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg99tjBEen6W5R9a2b8fSO8ubbjwarHIuegTa-11kUTR5mD_dp0mL7JneAoRGU0ohkv8DjFGH12JIghLNc5Nh89j4AxqAiKHlmjE5Xba62uj4hDoK-NTI3sUdx6-IhcUBOlvsp6ag/s144/dile-newegg.jpg

picasa，提供了四种图片大小供你选择：144，288，400，800。

当我们比较上面四种图片地址的时候会发现其中的规律：
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg99tjBEen6W5R9a2b8fSO8ubbjwarHIuegTa-11kUTR5mD_dp0mL7JneAoRGU0ohkv8DjFGH12JIghLNc5Nh89j4AxqAiKHlmjE5Xba62uj4hDoK-NTI3sUdx6-IhcUBOlvsp6ag/s144/dile-newegg.jpg
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg99tjBEen6W5R9a2b8fSO8ubbjwarHIuegTa-11kUTR5mD_dp0mL7JneAoRGU0ohkv8DjFGH12JIghLNc5Nh89j4AxqAiKHlmjE5Xba62uj4hDoK-NTI3sUdx6-IhcUBOlvsp6ag/s288/dile-newegg.jpg
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg99tjBEen6W5R9a2b8fSO8ubbjwarHIuegTa-11kUTR5mD_dp0mL7JneAoRGU0ohkv8DjFGH12JIghLNc5Nh89j4AxqAiKHlmjE5Xba62uj4hDoK-NTI3sUdx6-IhcUBOlvsp6ag/s400/dile-newegg.jpg
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg99tjBEen6W5R9a2b8fSO8ubbjwarHIuegTa-11kUTR5mD_dp0mL7JneAoRGU0ohkv8DjFGH12JIghLNc5Nh89j4AxqAiKHlmjE5Xba62uj4hDoK-NTI3sUdx6-IhcUBOlvsp6ag/s800/dile-newegg.jpg

现在你发现了其中的规律了吧，其实除了上面的四种大小，我们还可以用下面的一些：

s72,s144,s200,s320,s400,s512,s576,s640,s720,s800,
s912,s1024,s1152,s1280,s1440,s1600.

现在你的选择多了吧:)