Blurhash-macos

Extensions of NSImage to encode and decode blur hashes, based on Wolt's implementation for iOS.

Usage

    // scale down for performance + encode
    let blurHashString = image.small()?.blurHash(numberOfComponents: (4,4))
    
    // decoding
    let decoded = NSImage(blurHash: hash, size: CGSize(width: 32, height: 32)) // use small size and scale up in UI for performance