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PNG is a lossless compressed image file format that supports transparent backgrounds and high-resolution images. It provides high-quality images without taking up too much bandwidth, so it is widely used on the web. It contains 24-bit RGB color images, 8-bit grayscale images, and 24-bit images with alpha channels, and supports multiple color spaces, including sRGB, Adobe RGB, and grayscale. It can be created and edited in many different applications, including Adobe Photoshop, GIMP, and Microsoft Paint.

. ktx2 file is a file format used to store texture data. It is the latest version of the texture compression and packaging format specification developed by the Khronos Group. Compared to the old version of. ktx files,. ktx2 files have higher compression efficiency, lower file size, and faster loading speed.

The. ktx2 file stores texture data and related metadata information in binary format. These metadata information include texture size, pixel format, color space, compression format, and other texture related attributes. Through this metadata information, the application can correctly parse and use texture data.

The. ktx2 file supports various common texture compression formats, such as BC1, BC3, BC7, etc., and also provides the lossless compression format KTXu to meet the needs of different application scenarios. In addition, it also supports multiple mipmap levels, cube textures, array textures, volume textures, and other functions.

Due to the efficient compression algorithm used in. ktx2 files, the file size of texture data can be significantly reduced, thereby reducing storage and transmission costs. Meanwhile, its fast loading feature also enables faster loading and rendering of texture data in computer graphics applications, improving application performance and user experience.