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This rule is triggered when PageSpeed Insights detects that a compressed resource on a Web page is not provided with HTTP compression.

Overview

Many network servers can compress files into a file by calling a third-party module or using a built-in program gzipFormat, and then send the compressed file for download. This can save you some time when downloading the resources needed to render the website.

建議

您應(yīng)在自己的網(wǎng)絡(luò)服務(wù)器上啟用壓縮功能。以下這些參考展示了某些熱門(mén)網(wǎng)絡(luò)服務(wù)器上所啟用的壓縮功能:

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Frequently Asked Questions

PageSpeed Insights reports that many static content files need to be compressed into gzip format, but I have configured my network server to provide these files in gzip compressed format. Why can't PageSpeed Insights recognize these compressed files?
在將文件下載到客戶(hù)端計(jì)算機(jī)時(shí),代理服務(wù)器和防病毒軟件可以停用壓縮功能。由于PageSpeed Insights是根據(jù)實(shí)際返回到客戶(hù)端的標(biāo)頭來(lái)報(bào)告結(jié)果,因此,如果您要在使用此類(lèi)防病毒軟件或在后面放置中級(jí)代理服務(wù)器的客戶(hù)端計(jì)算機(jī)上運(yùn)行分析(許多代理服務(wù)器是透明的,您甚至可能意識(shí)不到代理服務(wù)器介入您的客戶(hù)端和網(wǎng)絡(luò)服務(wù)器),則可能會(huì)導(dǎo)致出現(xiàn)此問(wèn)題。
要確定代理服務(wù)器是否為導(dǎo)致此問(wèn)題的原因,您可以使用PageSpeed Insights Chrome ExtensionsTo check the header:
  1. Run PageSpeed on the related web page.
  2. 點(diǎn)擊顯示資源標(biāo)簽。
  3. Expand the URL of the resource marked uncompressed. The system displays the header displayed with the resource. If you see a file namedVia、ForwardedProxy-ConnectionIndicates that the proxy server has provided the resource.

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