Cheat Engine

[AquariiSong]

How do I make one? It seems pretty cool to make gb into kb.

[Austin Powers]

A decompression bomb is a file that is extremely large, most of the time larger than your system can handle or larger than normal for that type of file... which is probably around 256GBs or more compressed down into a smaller compressed file (zip, pkr, 7zip, tar.gz, tar, gz, etc.)

When this file is decompressed it can cause your system to halt, crash, or lock up until the decompression is complete or you run out of space to run your operating system.

Here is a link to some files here
The creation of a decompression file is easy. Not going to tell you how to make but let's just say it is easier to make it and compress it than it is to decompress and open the file. More than likely your system will run out of space or RAM and freeze up.

Example Counter Strike Server Start messages that countdown before a match starts. Well if you make that message too big the physical server will crash.

[Kirito]

if you decompress a 1GB file then your hard drive space is 160 GB
will your pc crash?

[AquariiSong]

[Austin Powers]

nope

its from here

[AquariiSong]

[Karakawe]

Easy. Make a file filled with zeroes of a specific size and compress it however you want.
In *nix-like:

[hcavolsdsadgadsg]

fill a file with one character then hope whatever type of archive you use supports that method of compression.

instead of something like: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
it would probably compress to something like: a64


and this is probably the dumbest thing ever and you'll probably get bored waiting for your own machine to stop chugging while it tries to actually save (or even work on) a 1gb text file before you actually manage to compress it.

[Zarr]

I wish I still had that decompression bomb I lost a while back. 40tb compressed down to 40kb.