KTX

File Format
Name	KTX
Ontology	Electronic File Formats Graphics KTX
Extension(s)	.ktx
MIME Type(s)	image/ktx
PRONOM	fmt/970
Released	2010

KTX (Khronos Texture) is, according to its documentation, "a format for storing textures for OpenGL and OpenGL ES applications."

Identification

KTX files begin with a 12-byte signature: AB 4B 54 58 20 ?? ?? BB 0D 0A 1A 0A.

The "??" bytes are for a version number. Possible values include ASCII "11" and "20".

Specifications

• KTX File Format Specification; archived: https://web.archive.org/web/20200414231150/https://www.khronos.org/opengles/sdk/tools/KTX/file_format_spec/
• KTX™️ File Format Specification (version 2.0); archived: https://web.archive.org/web/20191123013209/http://github.khronos.org/KTX-Specification/

Sample files

• https://github.com/KhronosGroup/KTX/tree/master/testimages

Links

• OpenGL ES SDK: KTX tool set
  • Khronos KTX Repository at GitHub