Read small icon files and covert to []byte variable to embed in go code

readicontobytes.go

package main

import (
	"fmt"
	"io/ioutil"
	"os"
	"strings"
)

// Reads the input file (e.g. favicon.ico) and creates outputs  variable=[...bytes].. build go files with the output for embeddineg ico impages
func main() {

	f, _ := os.Open(os.Args[1])
	data, _ := ioutil.ReadAll(f)
	str := fmt.Sprintf("%d", data)
	str = strings.ReplaceAll(str, " ", ",")
	str = strings.ReplaceAll(str, "[", "{")
	str = strings.ReplaceAll(str, "]", "}")
	fmt.Println("package main\n var favicon=[]byte", str)

}