TEX is a file format for compressing textures in Don't Starve and Don't Starve Together. It is a derivative of the DXT (S3 Texture Compression) file format. Sometimes unimplemented items and character portraits can be found by opening TEX files from the game files.
Most images or icons in this wikia are directly converted from TEX files.
TEX location[]
TEX files in Don't Starve are usually located under \Don't Starve\data.
Here is a list of useful TEX locations:
\Don't Starve\data\bigportraits\Don't Starve\data\images\Don't Starve\data\inventoryimages\Don't Starve\data\minimap\Don't Starve\data\portraits
When doing actions involving core game files, one should be careful and make a backup.
TEX Decompression[]
To read a TEX file, it is required to decompress it into any visible image format (usually PNG).
Here is the tool provided by Matt, TEXTool.
Gallery[]
Deerclops' tex file
Spider Queen tex file
Hound Tex file
Splumonkey Tex file
Depths Worm Tex file
Krampus Tex file
Water Beefalo Tex file
Yaarctopus Tex file
Unused Screecher files for the Child
Unused Screecher files for the demon child
Unused Screecher files for the Camp Leader
WX-78 Tex files
Unused files for the Slipstor