![]() Lossless WebP uses a much more complicated set of methods that were developed by the WebP team. Predictive coding uses the values of neighboring pixels in an image to predict values and then only encodes the difference. With lossy compression, WebP uses something called “predictive coding” to lower the file size. So how does Google’s WebP format achieve these reductions in file size?įirst, it supports lossy and lossless compression, so the exact reduction will depend on whether you’re using lossy or lossless compression. That’s the reason why if you run your site through PageSpeed Insights, one of the many recommendations is to Serve images in next-gen formats like WebP: Google PageSpeed Insights suggests using WebP images 26% smaller than a comparable PNG image.25-34% smaller than a comparable JPEG image.We also try to be at that level with our SaaS tool support.įor example, in Google’s WebP compression study, Google found that a WebP image file is on average: Kinsta spoiled me so bad that I demand that level of service from every provider now.
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