UPX: How to Reduce Executable Files Size

UPX: How to Reduce Executable Files Size

By Dedy Yasriady12:35 AMNo comments

A Way of Using UPX the Ultimate Packer for eXecutables
Using upx should be sufficient to reduce (compress) size of executable file.

• Download and extract upx
• Select the files you want to compress
• Click [Start compression]

My example Firefox.exe down sized from 149.8KB to 138.3KB, 92.62% size remain.
These are common steps I found on the internet on how to compressed executable files.
A Simple Trick by Utilize strip.exe
Anyway, to conserve more space, big ratio of compression sound interesting. How to make bigger compression? I found another program/tools for compression: strip.exe is a common executable stripping at MSYS/MinGW. Simple issuing command line:
C:\>strip –strip-all Firefox.exe

The sample file compressed from ~ 153KB to ~ 57KB. We got 62% compress ratio. Much bigger than 1rst step above.
If you still want to make more compression, then do it with UPX.
The complete order of make extremelly compression are:

• strip.exe
• UPX

By following ordered step above, you can make more compression than what upx does.
Do it at your own risk and enjoy…..