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XCF to AVIF
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XCF (eXperimental Computing Facility) is the native image format of the GIMP (GNU Image Manipulation Program) software. It is a layered image format, allowing users to save their progress, layers, channels, paths, and text layers for further editing. While XCF retains all editing data and layers, it's not typically used for web or print because many other programs do not recognize it. Instead, it's primarily used to save intermediate stages of digital art or photo editing within GIMP.

AVIF (AV1 Image File Format) is a cutting-edge image file format developed by the Alliance for Open Media, utilizing the AV1 video codec for highly efficient image compression. It supports a wide range of features including high dynamic range, wide color gamut, and 8-10 bit color depth, all while achieving significantly smaller file sizes compared to traditional formats like JPEG and PNG, though it may not be as widely supported across all platforms and software yet.