Description

UPX is a small utility for compressing .exe files. It works with DLLs and DOS programs, and even supports Linux binaries. You can download different versions for different needs in the news section below.

The program is completely portable: just copy it to a flash drive, run it from any drive, and you're good to go.

Important:

Please note that it only works via the command line; there's no graphical interface. If you're not comfortable with the console, you'll be in trouble. For everyone else, this is a convenient, no-frills tool.

How to use:

Open a command line in the folder with the unpacked UPX file and enter a command like upx filename.exe . The file is compressed, reducing its size, while the program remains functional and runs as usual.

There are different compression levels, and the default balance is between compression level and speed. For maximum compression, use the --best flag, and for fast compression, add --fast.

After launching UPX, you'll see a command window. Simply enter the path to the desired file and the compression command. You can also specify the output file name and some other parameters. There are fast and optimal compression modes, and you can also unpack files, of course.

UPX allows you to change the console's appearance; for example, you can remove unnecessary colors and make everything completely gray. If you enter the advanced settings mode, you can configure the program for maximum performance. Overall, there's nothing more to say about this product; enjoy your use.

Additional Information