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TechniqueMobile browsersDesktop browsersAll browsers
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AverageMedianSDAverageMedianSDAverageMedianSD
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Optimized icons
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Inline SVG79.8587.6021.5571.2186.3023.8674.9186.9523.14
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Symbol Sprite103.43113.1030.5295.00104.6532.3898.61112.1031.65
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External Symbol Sprite127.1774.25113.53125.1979.0592.04126.0474.25101.02
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External Image76.1573.0038.3376.5083.3028.7576.3573.9532.94
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Image + Data URI67.8069.1026.5766.8176.7019.0567.2471.8522.41
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Image + CSS Filter99.5596.7523.35121.95108.1566.59112.35107.5553.48
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Background120.81115.3066.83102.1788.1557.72110.16109.8062.02
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Background + Data URI116.52121.4053.57103.6197.7548.74109.14117.7550.90
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Background + CSS Filter157.60151.2061.85140.58179.0062.46147.87174.5562.33
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Mask181.20190.8571.56124.6285.8071.79148.87128.2576.55
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Mask + Data URI172.41190.9556.03124.34122.4051.00144.94140.1058.00
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Unoptimized icons
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Inline SVG197.41192.80100.69187.76204.6054.37191.89192.8077.17
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Symbol Sprite178.60211.9075.76154.53157.9066.96164.85201.7071.35
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External Symbol Sprite166.5599.00162.13190.9895.45156.16180.5199.00158.05
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External Image80.6275.6537.4182.8192.0029.7681.8782.8033.01
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Image + Data URI80.6583.6525.8875.6079.3021.5377.7683.6523.45
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Image + CSS Filter98.4496.7024.52124.90112.5068.47113.56109.3555.47
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Background122.90116.1563.99105.2288.5559.71112.80114.2561.76
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Background + Data URI129.17131.7555.49114.09104.1050.11120.55121.1552.63
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Background + CSS Filter159.07153.4068.33141.83181.2064.72149.22162.2566.36
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Mask163.68141.8564.10145.44122.7569.57153.25133.6567.42
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Mask + Data URI165.66160.2043.22137.65134.5052.40149.65140.2550.32
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All icons
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Inline SVG127.7489.7092.51118.9492.1573.60122.7191.6282.08
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Symbol Sprite131.84119.0070.55116.99104.5062.16123.35113.3066.09
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External Symbol Sprite139.7681.30137.41149.5079.00128.51145.3380.00132.06
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External Image75.0173.0039.5976.0889.0032.4575.6277.8035.57
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Image + Data URI70.6176.4029.4067.9172.3524.1569.0773.2426.47
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Image + CSS Filter94.9596.6029.92118.13110.3069.78108.20105.9057.29
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Background117.45114.6066.88100.1168.0059.77107.54108.9063.30
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Background + Data URI117.38122.6058.08104.3692.0052.07109.94114.3054.93
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Background + CSS Filter152.77151.1067.81135.95178.0566.74143.16166.0067.51
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Mask166.94162.9072.94129.92117.6072.87145.79128.0074.96
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Mask + Data URI162.76169.7057.59125.58129.1555.82141.52136.0059.35