are you on Pro acct？

来源: 于 2012-07-10 20:44:09 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

as far as i know, if you upload a jpeg, flickr does not modify the original size image in any way, at least not on a Pro acct.

怎么知道被压缩了近50％？