otiai10 https://blog.hatena.ne.jp/otiai10/ DRYな備忘録 https://otiai10.hatenablog.com/ go package main import ( "encoding/base64" "io/ioutil" "os" ) func main() { f, err := os.Open("./hoge.png") if err != nil { panic(err) } defer f.Close() b, _ := ioutil.ReadAll(f) out, _ := os.Create("out") base64.NewEncoder(base64.StdEncoding, out).Write(b) } その逆 func main() { f, err := os.Open("./hoge… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fotiai10.hatenablog.com%2Fentry%2F2015%2F10%2F07%2F182002" title="【Go言語】画像ファイルをbase64エンコード文字列にする、とその逆 - DRYな備忘録" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2015-10-07 18:20:02 rich https://otiai10.hatenablog.com/entry/2015/10/07/182002 1.0 100%