PageSpeed ​​Suggestion: Using Browser Caching ... How?

I have a WordPress site with a custom theme that I created myself. I am currently working on Google PageSpeed ​​Insights suggestions to improve the user experience on my website.

PageSpeed ​​suggests "Use browser caching". Below are the results:

**Leverage browser caching**

Setting an expiry date or a maximum age in the HTTP headers for static resources
instructs the browser to load previously downloaded resources from local disk 
rather than over the network.
Leverage browser caching for the following cacheable resources:
  http:.// (60 minutes)
  http:.// (60 minutes)
  http:.//…callback%22%3A%22__gcse.sacb%22%7D%5D%7D (60 minutes)


So basically, this is asking me to set the "expiration time" for the Adsense script cache to 60 minutes.

I tried to check the caching status of my website using REDbot. Below are the results:


The server clock is set correctly.

Content Consolidation

The resource does not transmit Vary sequentially.

Supports content negotiation for gzip compression, keeping 72%.


This answer allows you to keep all caches.

This answer allows the cache to assign its own freshness lifetime.

My understanding of the results is that my site allows for caching and allows the cache to schedule its own refresh time. I don't use HTML "meta" tags for caching, so basically my server is configured this way.

Now my question is how would I manually set the expiration time of scripts to 60 minutes. I know how to use a .htaccess file to set caching duration for different file types ((using FilesMatch)). But apparently this method works for file types and not for individual scripts in ".php" files. So how can I change the adsense scripts cache expiration time?

((This is my first question about stack, so if there is any bug or flaw please point it for me .. Thanks))


Following the answer from "Andrew" I added the following to my .htaccess file.

<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/jpg "access plus 1 hour"
ExpiresByType image/jpeg "access plus 1 hour"
ExpiresByType image/gif "access plus 1 hour"
ExpiresByType image/png "access plus 1 hour"
ExpiresByType text/css "access plus 1 hour"
ExpiresByType text/html "access plus 1 hour"
ExpiresByType text/x-javascript "access plus 1 hour"
ExpiresByType image/x-icon "access plus 1 hour"
ExpiresDefault "access plus 1 hour"


But it gave me strange results. Pagespeed has now lowered my score and now has the following guidelines:

Use browser caching Setting an expiration date or maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from the local drive rather than the network. Use browser caching for the following cached resources:

http.:// (60 minutes)
http.:// (60 minutes)
http.://…callback%22%3A%22__gcse.sacb%22%7D%5D%7D (60 minutes)
http.://…heme/images/mananatomy_logo_modified.jpg (60 minutes)
http.://…mages/mananatomy_logo_modified_small.jpg (60 minutes)
http.://…s/mananatomy-theme/images/sidebar_bg.jpg (60 minutes)
http.://…ontent/themes/mananatomy-theme/style.css (60 minutes)
http.://…t/uploads/2010/12/basic-anatomy-logo.jpg (60 minutes)
http.://…nt/uploads/2010/12/body-systems-logo.jpg (60 minutes)
http.://…ntent/uploads/2010/12/histology-logo.jpg (60 minutes)


So it got even more confusing. Any help ???


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5 answers

read here:

    Leverage browser caching for the following cacheable resources:
  http:.// (60 minutes)
  http:.// (60 minutes)
  http:.//…callback%22%3A%22__gcse.sacb%22%7D%5D%7D (60 minutes)


Your resources are not cached!



The parenthesis in front (60 minutes) is not a suggestion from Google to set the cache for that amount. Actually Google tells you that the cache is set very low (60 minutes), i.e. 1 hour

For images and other static files, set the cache to at least 1 month!

About google JS files, you can't do anything .. you can't cache external links (esp javascript) without loading your site up



I have used some code to improve browser caching performance to improve website performance and got good results.

Step 1: Preselect Google Analytics. Just enter the code into the site code.

Step 2: Then added code to the .htaccess file to keep the browser cache history for 1 year or 1 month.


ExpiresActive On

ExpiresByType image / jpg "1 year access"

ExpiresByType image / jpeg "access 1 year"

ExpiresByType image / gif "access 1 year"

ExpiresByType image / png "access 1 year"

ExpiresByType text / css "1 month access"

ExpiresByType text / html "1 month access"

ExpiresByType application / pdf "1 month access"

ExpiresByType text / x-javascript "1 month access"

ExpiresByType / x-shockwave-flash application "1 month access"

ExpiresByType image / x-icon "1 year access"

ExpiresDefault expiration date "1 month"


Step 3: After you have supplied the above code, added additional code to your .htaccess file.

Cache-Control Header Set "max-age = 2592000, public"

This code will help control the cache on your website and improve website performance as a high situation.



This is the final header code that covers everything you need to add this code to your .htacess file that you will find in the root of the site.

<IfModule mod_mime.c> AddType text/css .css AddType text/x-component .htc AddType application/x-javascript .js AddType application/javascript .js2 AddType text/javascript .js3 AddType text/x-js .js4 AddType video/asf .asf .asx .wax .wmv .wmx AddType video/avi .avi AddType image/bmp .bmp AddType application/java .class AddType video/divx .divx AddType application/msword .doc .docx AddType application/ .eot AddType application/x-msdownload .exe AddType image/gif .gif AddType application/x-gzip .gz .gzip AddType image/x-icon .ico AddType image/jpeg .jpg .jpeg .jpe AddType image/webp .webp AddType application/json .json AddType application/ .mdb AddType audio/midi .mid .midi AddType video/quicktime .mov .qt AddType audio/mpeg .mp3 .m4a AddType video/mp4 .mp4 .m4v AddType video/mpeg .mpeg .mpg .mpe AddType video/webm .webm AddType application/ .mpp AddType application/x-font-otf .otf AddType application/ ._otf AddType application/vnd.oasis.opendocument.database .odb AddType application/vnd.oasis.opendocument.chart .odc AddType application/vnd.oasis.opendocument.formula .odf AddType application/ .odg AddType application/vnd.oasis.opendocument.presentation .odp AddType application/vnd.oasis.opendocument.spreadsheet .ods AddType application/vnd.oasis.opendocument.text .odt AddType audio/ogg .ogg AddType application/pdf .pdf AddType image/png .png AddType application/ .pot .pps .ppt .pptx AddType audio/x-realaudio .ra .ram AddType image/svg+xml .svg .svgz AddType application/x-shockwave-flash .swf AddType application/x-tar .tar AddType image/tiff .tif .tiff AddType application/x-font-ttf .ttf .ttc AddType application/ ._ttf AddType audio/wav .wav AddType audio/wma .wma AddType application/ .wri AddType application/font-woff .woff AddType application/font-woff2 .woff2 AddType application/ .xla .xls .xlsx .xlt .xlw AddType application/zip .zip </IfModule> <IfModule mod_expires.c> ExpiresActive On ExpiresByType text/css A31536000 ExpiresByType text/x-component A31536000 ExpiresByType application/x-javascript A31536000 ExpiresByType application/javascript A31536000 ExpiresByType text/javascript A31536000 ExpiresByType text/x-js A31536000 ExpiresByType video/asf A31536000 ExpiresByType video/avi A31536000 ExpiresByType image/bmp A31536000 ExpiresByType application/java A31536000 ExpiresByType video/divx A31536000 ExpiresByType application/msword A31536000 ExpiresByType application/ A31536000 ExpiresByType application/x-msdownload A31536000 ExpiresByType image/gif A31536000 ExpiresByType application/x-gzip A31536000 ExpiresByType image/x-icon A31536000 ExpiresByType image/jpeg A31536000 ExpiresByType image/jpg A31536000 ExpiresByType image/webp A31536000 ExpiresByType application/json A31536000 ExpiresByType application/ A31536000 ExpiresByType audio/midi A31536000 ExpiresByType video/quicktime A31536000 ExpiresByType audio/mpeg A31536000 ExpiresByType video/mp4 A31536000 ExpiresByType video/mpeg A31536000 ExpiresByType video/webm A31536000 ExpiresByType application/ A31536000 ExpiresByType application/x-font-otf A31536000 ExpiresByType application/ A31536000 ExpiresByType application/vnd.oasis.opendocument.database A31536000 ExpiresByType application/vnd.oasis.opendocument.chart A31536000 ExpiresByType application/vnd.oasis.opendocument.formula A31536000 ExpiresByType application/ A31536000 ExpiresByType application/vnd.oasis.opendocument.presentation A31536000 ExpiresByType application/vnd.oasis.opendocument.spreadsheet A31536000 ExpiresByType application/vnd.oasis.opendocument.text A31536000 ExpiresByType audio/ogg A31536000 ExpiresByType application/pdf A31536000 ExpiresByType image/png A31536000 ExpiresByType application/ A31536000 ExpiresByType audio/x-realaudio A31536000 ExpiresByType image/svg+xml A31536000 ExpiresByType application/x-shockwave-flash A31536000 ExpiresByType application/x-tar A31536000 ExpiresByType image/tiff A31536000 ExpiresByType application/x-font-ttf A31536000 ExpiresByType application/ A31536000 ExpiresByType audio/wav A31536000 ExpiresByType audio/wma A31536000 ExpiresByType application/ A31536000 ExpiresByType application/font-woff A31536000 ExpiresByType application/font-woff2 A31536000 ExpiresByType application/ A31536000 ExpiresByType application/zip A31536000 </IfModule> <IfModule mod_deflate.c> AddOutputFilterByType DEFLATE text/css text/x-component application/x-javascript application/javascript text/javascript text/x-js text/html text/richtext text/plain text/xsd text/xsl text/xml image/bmp application/java application/msword application/ application/x-msdownload image/x-icon image/webp application/json application/ video/webm application/ application/x-font-otf application/ application/vnd.oasis.opendocument.database application/vnd.oasis.opendocument.chart application/vnd.oasis.opendocument.formula application/ application/vnd.oasis.opendocument.presentation application/vnd.oasis.opendocument.spreadsheet application/vnd.oasis.opendocument.text audio/ogg application/pdf application/ image/svg+xml application/x-shockwave-flash image/tiff application/x-font-ttf application/ audio/wav application/ application/font-woff application/font-woff2 application/ <IfModule mod_mime.c> # DEFLATE by extension AddOutputFilter DEFLATE js css htm html xml </IfModule> </IfModule> <FilesMatch "\.(css|htc|less|js|js2|js3|js4|CSS|HTC|LESS|JS|JS2|JS3|JS4)$"> FileETag MTime Size <IfModule mod_headers.c> Header unset Set-Cookie </IfModule> </FilesMatch> <FilesMatch "\.(html|htm|rtf|rtx|txt|xsd|xsl|xml|HTML|HTM|RTF|RTX|TXT|XSD|XSL|XML)$"> FileETag MTime Size <IfModule mod_headers.c> Header append Vary User-Agent env=!dont-vary </IfModule> </FilesMatch> <FilesMatch "\.(asf|asx|wax|wmv|wmx|avi|bmp|class|divx|doc|docx|eot|exe|gif|gz|gzip|ico|jpg|jpeg|jpe|webp|json|mdb|mid|midi|mov|qt|mp3|m4a|mp4|m4v|mpeg|mpg|mpe|webm|mpp|otf|_otf|odb|odc|odf|odg|odp|ods|odt|ogg|pdf|png|pot|pps|ppt|pptx|ra|ram|svg|svgz|swf|tar|tif|tiff|ttf|ttc|_ttf|wav|wma|wri|woff|woff2|xla|xls|xlsx|xlt|xlw|zip|ASF|ASX|WAX|WMV|WMX|AVI|BMP|CLASS|DIVX|DOC|DOCX|EOT|EXE|GIF|GZ|GZIP|ICO|JPG|JPEG|JPE|WEBP|JSON|MDB|MID|MIDI|MOV|QT|MP3|M4A|MP4|M4V|MPEG|MPG|MPE|WEBM|MPP|OTF|_OTF|ODB|ODC|ODF|ODG|ODP|ODS|ODT|OGG|PDF|PNG|POT|PPS|PPT|PPTX|RA|RAM|SVG|SVGZ|SWF|TAR|TIF|TIFF|TTF|TTC|_TTF|WAV|WMA|WRI|WOFF|WOFF2|XLA|XLS|XLSX|XLT|XLW|ZIP)$"> FileETag MTime Size <IfModule mod_headers.c> Header unset Set-Cookie </IfModule> </FilesMatch> <FilesMatch "\.(bmp|class|doc|docx|eot|exe|ico|webp|json|mdb|webm|mpp|otf|_otf|odb|odc|odf|odg|odp|ods|odt|ogg|pdf|pot|pps|ppt|pptx|svg|svgz|swf|tif|tiff|ttf|ttc|_ttf|wav|wri|woff|woff2|xla|xls|xlsx|xlt|xlw|BMP|CLASS|DOC|DOCX|EOT|EXE|ICO|WEBP|JSON|MDB|WEBM|MPP|OTF|_OTF|ODB|ODC|ODF|ODG|ODP|ODS|ODT|OGG|PDF|POT|PPS|PPT|PPTX|SVG|SVGZ|SWF|TIF|TIFF|TTF|TTC|_TTF|WAV|WRI|WOFF|WOFF2|XLA|XLS|XLSX|XLT|XLW)$"> <IfModule mod_headers.c> Header unset Last-Modified </IfModule> </FilesMatch> <IfModule mod_headers.c> Header set Referrer-Policy "no-referrer-when-downgrade" </IfModule>



You will have a solution to this problem by following these steps:

  • create a .htpasswd file by going to and generate a username and password.
  • upload the .htpasswd file to your WordPress wp-admin folder

  • add the following code to your .htaccess file

    ErrorDocument 401 default
    AuthType Basic
    AuthName "Restricted Area"
    AuthUserFile /home/public_html/wp-admin/.htpasswd
    require valid-user



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