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Recommendations

Lighthouse
Metrics
Audits
PageSpeed (Legacy)
YSlow (Legacy)

PageSpeed: Specify a Vary: Accept-Encoding header (deprecated)

Overview

Bugs in some public proxies may lead to compressed versions of your resources being served to users that don't support compression. Specifying the Vary: Accept-Encoding header instructs the proxy to store both a compressed and uncompressed version of the resource.

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Summary

Server
Low
Easy

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