Although it seems a very good compressor tool, do not forget that the above screenshot resembled compressing plain text.
A lesson about compression:
Compression is to use algorithms that are actually smaller than the original data, to store that particular data.
There are two kinds of compression. Lossless and lossy.
Lossless does not affect the quality of the data. All the data can be uncompressed and it is still 100% quality. Examples: WinZip, LHA, ARJ, etc.
Lossy does affect the quality of the data. All the data can be uncompressed but is never the same 100% quality although it might be very very hard to actually spot the difference with your senses. Examples: Jpeg and Mp3
Remember, compression is just some bunch of algorithms! Another example: I have this file called test.txt which contains the following information:
I can “compress” this by writing it as:
. Compression ratio : 75%. Why 75%? Because the datasize i still have is 25% of the original.
It gets a lot worse when i try to compress this
and get this result
. Compression ratio: 60%. The datasize is 40% of the original.
As you can all imagine, it gets a lot worse when you compress this
In fact, the “algorithm” i used actually increases the size!
So don’t use plain text as reference, but the things you actually want to compress.