data URI bytes HTML Windows Android iPhone Mac ref
Chrome 56 Firefox 52 IE 11 Edge 38 Safari Vivaldi Browser Chrome 56 Safari Safari Chrome 56
42 NG NG NG NG OK NG NG NG OK NG NG 1
54 OK NG NG NG OK NG OK OK NG NG OK 1
58 OK NG NG NG OK NG OK OK NG NG OK 3
60 (SVG) OK OK NG OK OK OK OK OK OK OK OK 1
74 OK OK OK OK OK OK OK OK OK OK OK 1
78 OK OK OK OK OK OK OK OK OK OK OK 3
82 OK OK OK OK OK OK OK OK OK OK OK 1
82 OK OK OK OK OK OK OK OK OK OK OK 2
114 (PNG) OK OK OK OK OK OK OK OK OK OK OK 5
4 OK NG NG NG NG NG OK OK OK NG OK 3
11 NG NG OK OK OK NG OK NG OK OK NG 4

※1つのdata-uriの処理に平均45マイクロ秒（最小23マイクロ秒、最大1365マイクロ秒）ほどかかるので、2500画像埋め込んだらdata-uriのほうが100ms～300msほど遅かった。

※svgバージョンでも1つあたりの処理にかかる時間はGIFと同じぐらいだった

※処理にかかる時間はCPU速度依存

※ref
  1. http://stackoverflow.com/questions/9126105/blank-image-encoded-as-data-uri
  2. http://probablyprogramming.com/2009/03/15/the-tiniest-gif-ever
  3. http://stackoverflow.com/questions/6018611/smallest-data-uri-image-possible-for-a-transparent-image
  4. http://stackoverflow.com/questions/5775469/whats-the-valid-way-to-include-an-image-with-no-src/28077004#28077004
  5. http://proger.i-forge.net/%D0%9A%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80/[20121112]%20The%20smallest%20transparent%20pixel.html
※See Also