WebP Encoder/Decoder for Golang based on official libwebp distribution
go get -u github.com/nickalie/go-webpbin
All env can be override with option functions.
| Name | Default | Desscription |
|---|---|---|
| SKIP_DOWNLOAD | false |
Download webp bin automatically. Since there is no precompiled file for alpine, THE SKIP_DOWNLOAD MUST BE true AND ASSIGN A SOURCE FOR RUN. |
| VENDOR_PATH | .bin/webp |
When there is no lib within and SKIP_DOWNLAOD is not true, it'll be downloaded. |
| LIBWEBP_VERSION | 1.2.0 |
The latest version for now. (2021/07/16) |
package main
import (
"image"
"image/color"
"log"
"os"
"github.com/nickalie/go-webpbin"
)
func main() {
const width, height = 256, 256
// Create a colored image of the given width and height.
img := image.NewNRGBA(image.Rect(0, 0, width, height))
for y := 0; y < height; y++ {
for x := 0; x < width; x++ {
img.Set(x, y, color.NRGBA{
R: uint8((x + y) & 255),
G: uint8((x + y) << 1 & 255),
B: uint8((x + y) << 2 & 255),
A: 255,
})
}
}
f, err := os.Create("image.webp")
if err != nil {
log.Fatal(err)
}
if err := webpbin.Encode(f, img); err != nil {
f.Close()
log.Fatal(err)
}
if err := f.Close(); err != nil {
log.Fatal(err)
}
}
CWebP is a wrapper for cwebp command line tool.
Example to convert image.png to image.webp:
err := webpbin.NewCWebP().
Quality(80).
InputFile("image.png").
OutputFile("image.webp").
Run()
DWebP is a wrapper for dwebp command line tool.
Example to convert image.webp to image.png:
err := webpbin.NewDWebP().
InputFile("image.webp").
OutputFile("image.png").
Run()
Under the hood library uses official libwebp distribution, so if you're going to use it on not supported platform (arm or alpine), you need to build libwebp from sources and set SKIP_DOWNLOAD=true.
Snippet to build libweb on alpine:
apk add --no-cache --update libpng-dev libjpeg-turbo-dev giflib-dev tiff-dev autoconf automake make gcc g++ wget
wget https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-0.6.0.tar.gz && \
tar -xvzf libwebp-0.6.0.tar.gz && \
mv libwebp-0.6.0 libwebp && \
rm libwebp-0.6.0.tar.gz && \
cd /libwebp && \
./configure && \
make && \
make install && \
rm -rf libwebp
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent