> For the complete documentation index, see [llms.txt](https://noskill.gitbook.io/titanfall2/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://noskill.gitbook.io/titanfall2/documentation/file-format.md).

# File Format

- [NUT & GNUT - Squirrel](https://noskill.gitbook.io/titanfall2/documentation/file-format/nut-and-gnut-squirrel.md)
- [PSD - Photoshop Document](https://noskill.gitbook.io/titanfall2/documentation/file-format/psd-photoshop-document.md): PSD, Photoshop Document, represents Adobe Photoshop's native file format used for graphics designing and development.
- [TGA - Truevision Graphics Adapter](https://noskill.gitbook.io/titanfall2/documentation/file-format/truevision-graphics-adapter-tga.md)
- [TXT - Text file](https://noskill.gitbook.io/titanfall2/documentation/file-format/txt-text-file.md): A file with .TXT extension represents a text document that contains plain text in the form of lines.
- [VPK - Valve Pak file](https://noskill.gitbook.io/titanfall2/documentation/file-format/vpk-valve-pak-file.md): VPK (Valve Pak) files are uncompressed archives used to package game content.