GENERATING DATAURI IMAGES WITH GO - main.go - 3

main.go

//main.go

...

func main() {
    ...
    for ... {...}

    // Here we allocate and create a buffer that can easily be
    // turned into a []byte
    out := new(bytes.Buffer)

    // We now encode the image we created to the buffer
    err := png.Encode(out, img)
    if err != nil {
        // Handle errors
    }

    // This now takes a []byte of the buffer and base64 encodes it to a string
    // Never needing to create the image file all done in memory
    base64Img := base64.StdEncoding.EncodeToString(out.Bytes())

    //And now you can see the magic happen.
    // Go ahead and run it then take the output and copy/paste it in your
    // browser's URL bar, and you'll see your image.
    fmt.Println("data:image/png;base64,", base64Img)
}