注：以下数据均采用“***”压缩得出。
一、使用winra工具对目标文件进行压缩，得出如下结果(winrar支持两种格式压缩)：
文件格式压缩前大小（字节）rar压缩后大小（字节）zip压缩后大小（字节）rar压缩率zip压缩率JPEG25,049,66624,379,71024,379,3922.67%2.68%BMP22,616,5508,175,53712,507,96863.85%44.70%MP330,154,22829,931,10529,897,3550.74%0.85%MP4396,231,169395,504,834394,879,5820.18%0.34%AVI108,300,864102,183,647104,713,9645.65%3.31%RMVB449,221,835447,904,871447,630,7440.29%0.35%MKV564,619,749564,222,464563,811,1620.07%0.14%Word25,731,07215,337,08116,611,76840.39%35.44%Execl34,787,3285,293,3768,405,34884.78%75.84%txt26,655,34912,380,13414,032,89053.55%53.55%
见图表：
二、使用好压对目标进行压缩，得出结果如下：
文件格式压缩前大小（字节）7z压缩后大小（字节）zip压缩后大小（字节）7z压缩率zip压缩率JPEG25,049,66624,465,06324,392,5492.33%2.62%BMP22,616,55010,038,51912,506,94255.61%44.70%MP330,154,22830,025,18929,896,7470.43%0.85%MP4396,231,169394,879,532399,346,6660.34%-0.79%AVI108,300,864101,627,786104,713,8426.16%3.31%RMVB449,221,835449,471,757447,630,692-0.06%0.35%MKV564,619,749568,724,028563,811,006-0.73%0.14%Word25,731,07214,975,59716,604,05641.80%35.47%Execl34,787,3283,413,1708,403,42090.19%75.84%txt26,655,34912,344,66914,009,64053.69%47.44%
结果中有负数，说明文件压缩后比压缩前大了。
见图表：
三、使用360压缩后，结果如下：
文件格式压缩前大小（字节）rar压缩后大小（字节）7z压缩后大小（字节）zip压缩后大小（字节）rar压缩率7z压缩率zip压缩率JPEG25,049,66624,379,71024,464,64824,344,3312.67%2.34%2.82%BMP22,616,5508,175,53710,038,45811,906,30663.85%55.61%47.36%MP330,154,22830,154,84630,025,14229,878,2270.00%0.43%0.92%MP4396,231,169396,231,255396,231,281396,231,3270.00%0.00%0.00%AVI108,300,864102,183,647101,627,762103,886,0545.65%6.16%4.08%RMVB449,221,835449,221,924449,471,733449,221,9950.00%-0.06%0.00%MKV564,619,749564,222,464564,619,915564,619,9870.07%0.00%0.00%Word25,731,07215,337,08114,975,36716,410,16640.39%41.80%36.22%Execl34,787,3285,293,3763,412,8457,716,33384.78%90.19%77.82%txt26,655,34912,380,13412,344,09013,584,15853.55%53.69%53.55%
见图表：
四、综合各工具最高压缩率的格式对比如下：
| 文件格式 |
winrar压缩率 |
好压压缩率 |
360压缩率 |
| JPEG |
2.67% |
2.33% |
2.67% |
| BMP |
63.85% |
55.61% |
63.85% |
| MP3 |
0.74% |
0.43% |
0.00% |
| MP4 |
0.18% |
0.34% |
0.00% |
| AVI |
5.65% |
6.16% |
5.65% |
| RMVB |
0.29% |
-0.06% |
0.00% |
| MKV |
0.07% |
-0.73% |
0.07% |
| Word |
40.39% |
41.80% |
40.39% |
| Execl |
84.78% |
90.19% |
84.78% |
| txt |
53.55% |
53.69% |
53.55% |
三种工具的压缩率对比图如下：
通过上面的实测，对于大家平时选择什么压缩工具，使用什么格式压缩，可以起到一定的参考作用。
本文转自Y.weisheng 51CTO博客，原文链接：http://blog.51cto.com/yuan2/835692，如需转载请自行联系原作者
