why png size doesn't change after using http gzip compression
问题 I use following .htaccess to set gzip compression: AddOutputFilterByType DEFLATE text/html image/png image/jpeg text/css text/javascript Please check this url: http://www.coinex.com/cn/silver_panda/proof/china_1984_27_gram_silver_panda_coin/ the gzip compression works for html, css, js and jpg, but not working for png (really amazing..) 回答1: PNG is already a compressed data format. Compressing it with GZIP is not likely to decrease the size, and can in fact make it larger. I'm surprised you