This is a native WebP encoder written entirely in Go, with no dependencies on libwebp or other external libraries. Designed for performance and efficiency, this encoder generates smaller files than the standard Go PNG encoder and is approximately 40% faster in execution.
Currently, the encoder supports only WebP lossless images (VP8L).
We conducted a quick benchmark to showcase file size reduction and encoding performance. Using an image from Google’s WebP Lossless and Alpha Gallery, we compared the results of our nativewebp encoder with the standard PNG decoder.
image source: https://developers.google.com/speed/webp/gallery2
| PNG encoder | nativeWebP encoder | reduction | |
|---|---|---|---|
| file size | 54kb | 50kb | 7% smaller |
| encoding time | 5651958 ns/op | 1950541 ns/op | 65% faster |
To install the nativewebp package, use the following command:
go get github.com/HugoSmits86/nativewebpHere’s a simple example of how to encode an image:
file, err := os.Create(name)
if err != nil {
log.Fatalf("Error creating file %s: %v", name, err)
}
defer file.Close()
err = nativewebp.Encode(file, img)
if err != nil {
log.Fatalf("Error encoding image to WebP: %v", err)
}