Encode and compress a string to base64 and Decode it back to a string

decode.go

func main() {
  input := "KkktLgEEAAD//w=="

	out, err := base64.StdEncoding.DecodeString(input)
	if err != nil {
		log.Panicln(err)
	}

	enflated, err := ioutil.ReadAll(flate.NewReader(bytes.NewReader(out)))
	if err != nil {
		log.Panicln(err)
	}

	content, err := url.QueryUnescape(string(enflated))
	if err != nil {
		log.Panicln(err)
	}

	fmt.Println(content)
}

encode.go

func main() {
  content := `test`

	var buf bytes.Buffer
	escapedURL := url.QueryEscape(content)
	writter, err := flate.NewWriter(&buf, flate.BestCompression)
	if err != nil {
		log.Panicln(err)
	}
	writter.Write([]byte(escapedURL))
	writter.Close()

	outData := base64.StdEncoding.EncodeToString(buf.Bytes())
	outData = outData + "" // make the go compiler happy

	fmt.Println(outData)
}