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css背景使用base64編碼或者將base64編碼放在img圖片標簽中

2020/5/4 15:19:18 字體: 瀏覽 7526

css背景使用base64編碼或者將base64編碼放在img圖片標簽中


將圖片轉為base64編碼然后放在css的background背景中使用或者放在前臺 img 圖片標簽中直接使用
減少HTTP請求,加快小圖像或者小圖標的加載時(shí)間。

// Base64 在CSS中背景圖使用
.diymenu {
  background-image: url("data:image/png;base64,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");
}
// Base64 在HTML中的使用
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAABQCAYAAACOEfKtAAAGi0lEQVR4Xu2baYgcRRTH/28mmeoeE9GgguKnoCh+8UOiqNF47MxsjBfq9oriRUBFjOIFIiJGCUHR4BlRUcQTMcaQy2S7J7dGo8ZICCHEJd63yRp3Z3p6NjtPerKG2WN2uqpm1mW26mu/36uqH6+6q6drCKZpGSAt2sAwAjWLwAg0AjUNaOKmAo1ATQOauKlAI1DTgCZuKtAI1DSgiZsKNAI1DWjipgKNQE0Dg3CrIzEPcWojYCoY+wF8S4Qn8qlg5XA9mQqssGJnxXIwLhtOFJf40UJrcd7ga0ZgvxHbE+sBXFCtnhn4p0R8djFV3FUZYwQCqCWvQtjzfjq4ywisXLY1Km9ARTI6/UxwshEYcdkOWc5EXX6qMMUIlFu2lb62+elg+rgXKHHPG1CERJibTwWLxrVAZXngN/Pp4k3jehujKg/AEj8VOCDwuBWoLI+x1P87cNCOvnH7JmJ7Yh2ACxVe+pb5RwcOpqO3Gtv0G2nbE1kALdLyGCv8g4GD2QhGYptaYNIVLhPS0vKAVf4RgYNz4Ndim1aglRWriTGrloDB15mxusCBg1bkorBNKdDyxCoCZkcRUBnDQEfBDhyci+6obNMJtD2xAsClUQX8F0cMT1DgdKVxQIZtKoG2J5YBuFxGQH/s2oQVOAfOQ5cs2zQC7az4EIwrZQUAWD+BEk53qnufAtscx9tsT3wA4GoFARvjYqLTM7PnTwW2jNSswEmbJh3LueLxuYuLO1Q7aSRne+J9AI5CH5tjNMHJpXK/K7CHkaoCk66YzcQPA3RWf/TPABb76eAenQ7rydqe9R7A1yjk/IRE3MnPzP+qwA5AhhVouWIVUdVtwAY/Hai8FumOdQBvu9a7IL5WPil/iljc8Vv8sCC02xCBtpe4CqAlI2UmhpvPBK3avSsmsLOJt8B0vTzOW5GIO/75/o/y7PDEEIGWJ14m4NYIHSz308EVEeLqGpL0Em8w6Eb5pPQFx+AUWgrfy7PViaEV6IpvQDgpYifhPbE9Yqx2WNJNvM5ENysk2sZE7YVUYa8COyIy3BLeB9CADycjZmB+288Ub6j3wAbnS3qJ1xg0R6Gf7aU+tAezgk4FtiYyVGDW2grmM2uSFQFMeLWQCm6RYWRiLU+8QoBK/h0lghOkgj0y/cnEDlOB4m4AT8skKccyFvmZYK40VwOwsuIlYtwmm5cZO0vMTrG1uFuWlYkffhvTkZhHMXpEJlE5lrDQTwX3S3NVANsTLwK4XTYfAbsOEjuDj2HI5okSP8JG2lrAxA9GSVIZQ0QL8qnCQ7Lc4HjbFS+AcId0HsbuOLPT01rcKc0qACO+ytlZ8RQY98nmrXaSKWoeOyueBWPAGZSI7J4YsZNLjd5rZ813YdsTzwG4M+IEDoepSrQ9Ed5/w/uwXGN0xlBycpner+VAveiaAsP0yjfyKmfqqg3ZdsVCEO5VmNJeipWcfEvvVwqsFhJJYNiD6iY2aiXanngSgPwDiPAdlUpOPtP7pZYJRTiywDC/7VnvAHydbF+1JNpZ63EwPyCbF8AP6Cs5/qzezxXYuiBSAssSXbEYhDbZ3qtJTLpqT3sQfgLHHD/tfyY7lnrGSws8VIlq3x4GS0x61nwGq2x5fkEp5vit/pZ6ylDJpSSw/8Gi9t21/8GSdK3HDv1gK9kIvzGTU0gXPpYkGxKuLLC/EpXOnISVqPSmA/zBJXIKrYVNDbGhkFRLIBhkZ8VmADMU+pZDCH/1V94GObCx0XoCw7FtgW3nrI0An9G4odJ+LiGsvLDix1TTFwjgyDWY0jtBrAPj9HrPjoEDIGorpArhKasx1+oiMJxV0k2ewOhbC8KpdZxld4nRFmQCt44565qqbgIPPZmtqcTsIfyfmX7LxQhtuVSwRj9V4zLUVWA4zEQ2cVq8RB0gnKgxbJ/iaMtfFHykkWNU0LoLLC/njonTOBYLJ3+cwiwCIrRV+3ekQr6GIg0RGI7Ydu0ZiJVWgnGUxAx6+ytvuQTzv4Y2TGD5nuhaLUQcntezI8yyD8yOnykujRA7ZkIaKrC8nD1xCQPhub34CLNmgB0/XRzxRMSYsVYxkIYLLC/njkQbYjQfwClDJDCHPwg842eKi8eioFpjGhWB4SAmr5h8zEGrGH5lm1be5jA6QdjudwVz0I6eWgMdq9dHTeBYFaA7LiNQ06ARaARqGtDETQUagZoGNHFTgUagpgFN3FSgEahpQBM3FWgEahrQxE0FGoGaBjTxfwEuZSVvUpE5IwAAAABJRU5ErkJggg==" />


經(jīng)過(guò)Base64 編碼后的文件體積一般比源文件大 30% 左右。
*請上傳小于300KB的.jpg/.jpeg/.gif/.bmp/.png/.ico格式圖片,不建議將大圖轉換。

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