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Reduce JPEG subsampling

Reduces color sampling of jpeg images to 4:2:0. Enabled by recompress_images.

Configuration

For PageSpeed on IIS and PageSpeed on ATS

Enable
pagespeed EnableFilters jpeg_subsampling

Enabled by default via RewriteLevel CoreFilters

Disable
pagespeed DisableFilters jpeg_subsampling

Risk Classification

Unclassified

Examples that demonstrate optimization in real time are available here.

core
PageSpeed optimization, powered by the official Google PageSpeed SDK

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Some content on this website represents a modified version of the official Google PageSpeed documentation