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Cache & Compress Your WordPress Site Without a Plugin

WordPress caching and compression is mostly common sense. If you have a powerful caching solution on your server and you take advantage of the browser caching, you are all set, and you don’t need the overhead of a caching plugin.

Here’s what you need: OPcache or Varnish on the server. Or APC or XCache. It doesn’t matter. I won’t go into any detail on these because they are outside the scope of this article.

Next, you need several lines of code for your Apache or Nginx configuration files:

For Apache:

# Cache
<IfModule mod_expires.c>
    ExpiresActive On
    ExpiresDefault "access plus 1 month"
    ExpiresByType text/html "access plus 0 seconds"
    ExpiresByType text/xml "access plus 0 seconds"
    ExpiresByType application/xhtml+xml "access plus 0 seconds"
    ExpiresByType application/xml "access plus 0 seconds"
    ExpiresByType application/json "access plus 0 seconds"
    ExpiresByType application/pdf "access plus 0 seconds"
    ExpiresByType application/rss+xml "access plus 1 hour"
    ExpiresByType application/atom+xml "access plus 1 hour"
    ExpiresByType application/x-font-ttf "access plus 1 month"
    ExpiresByType application/x-font-woff "access plus 1 month"
    ExpiresByType application/x-font-woff2 "access plus 1 month"
    ExpiresByType image/svg+xml "access plus 1 month"
    ExpiresByType application/vnd.ms-fontobject "access plus 1 month"
    ExpiresByType image/jpg "access plus 1 month"
    ExpiresByType image/jpeg "access plus 1 month"
    ExpiresByType image/gif "access plus 1 month"
    ExpiresByType image/png "access plus 1 month"
    ExpiresByType video/ogg "access plus 1 month"
    ExpiresByType audio/ogg "access plus 1 month"
    ExpiresByType video/mp4 "access plus 1 month"
    ExpiresByType video/webm "access plus 1 month"
    ExpiresByType text/css "access plus 6 month"
    ExpiresByType text/javascript "access plus 6 month"
    ExpiresByType application/javascript "access plus 6 month"
    ExpiresByType application/x-javascript "access plus 6 month"
    ExpiresByType application/x-shockwave-flash "access plus 1 week"
    ExpiresByType image/x-icon "access plus 1 week"

    # Webfonts
    ExpiresByType application/x-font-ttf "access plus 1 month"
    ExpiresByType font/opentype "access plus 1 month"
    ExpiresByType application/x-font-woff "access plus 1 month"
    ExpiresByType image/svg+xml "access plus 1 month"
    ExpiresByType application/vnd.ms-fontobject "access plus 1 month"
</IfModule>

# Headers
Header unset ETag
FileETag None
<ifModule mod_headers.c>
    <filesMatch "\.(ico|jpe?g|png|gif|swf)$">
        Header set Cache-Control "public"
    </filesMatch>
    <filesMatch "\.(css)$">
        Header set Cache-Control "public"
    </filesMatch>
    <filesMatch "\.(js)$">
        Header set Cache-Control "private"
    </filesMatch>
    <filesMatch "\.(x?html?|php)$">
        Header set Cache-Control "private, must-revalidate"
    </filesMatch>
</ifModule>

# GZip Compression
<IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/text text/html text/plain text/xml text/css application/x-javascript application/javascript text/javascript font/opentype application/rss+xml application/json
    BrowserMatch ^Mozilla/4 gzip-only-text/html
    BrowserMatch ^Mozilla/4\.0[678] no-gzip
    BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
    SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary
    Header append Vary User-Agent env=!dont-vary
</IfModule>

For Nginx:

# Expire rules for static content

# cache.appcache, your document html and data
location ~* \.(?:manifest|appcache|html?|xml|json)$ {
    expires -1;
    access_log off;
}

# Feed
location ~* \.(?:rss|atom)$ {
    expires 1h;
    add_header Cache-Control "public";
}

# Media: images, icons, video, audio, HTC
location ~* \.(?:jpg|jpeg|gif|png|ico|cur|gz|svg|svgz|mp4|ogg|ogv|webm|htc)$ {
    expires 1M;
    access_log off;
    add_header Cache-Control "public";
}

# CSS and Javascript
location ~* \.(?:css|js)$ {
    expires 1y;
    access_log off;
    add_header Cache-Control "public";
}

That’s it. Don’t forget to measure your site’s speed before and after implementing the solutions above.



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