.ZST File Extension
File Type 1ZSNES Save File
What is a ZST file?
Game file saved by ZSNES, a Super Nintendo emulator for Windows and Linux; stores game progress in a saved state so that the game can be opened and resumed at a later time; now also supported by the Snes9x emulator.
NOTE: ZSNES provides numerous save states from 0 to 99, which use the file extensions .ZS1, .ZS2, and so on, for each save state. The files can be saved using the "Save State" option under the "Game" menu.
File Type 2Zstandard Compressed File
.ZST File Association 2
A ZST file is a file compressed with the Zstandard (zstd) compression algorithm. It contains a file compressed with lossless compression at a level specified by the user. ZST files are used for reducing file sizes for various purposes, such as databases, file systems, networks, and games.
After compressing a file with the zstd algorithm, the .zst file extension is appended onto the file being compressed. For example, the sample.doc file becomes sample.doc.zst. When the file is decompressed the .zst extension is removed.