The Ultimate Guide to Enabling Gzip Compression in WordPress (2024)

Hey there, WordPress site owner! Let me ask you a question:

Is your website as fast as it could be?

If not, I‘ve got great news. Today I‘m going to show you one of the most effective ways to speed up your WordPress site: enabling gzip compression.

Gzip is like magic for your page loading times. It can shrink your website files by up to 70% or more before sending them to a user‘s browser. Smaller files = faster transmission = quicker rendering.

For example, a 150 KB HTML file can be compressed down to just 20 KB with gzip. That‘s a huge savings in data transfer!

According to HTTP Archive, 65% of websites use gzip compression. So if you‘re not using gzip yet, you‘re missing out on some major speed gains.

The impact of those speed gains is not just theoretical. Studies have shown that a mere 1 second page load delay can hurt your conversions by 7% or more.

Plus, Google has confirmed that page speed is a ranking factor in their search algorithm. Meaning, faster loading pages tend to rank higher than slow ones, all else being equal.

So if you want more traffic, engagement, and revenue from your WordPress site, enabling gzip is a no-brainer.

Luckily it‘s super simple to set up, even if you‘re not technical. I‘ll walk you through 3 easy methods:

1. Using a caching plugin (beginner-friendly)
2. Editing your .htaccess file (intermediate)
3. Configuring your web server directly (advanced)

By the end of this guide, you‘ll be a gzip expert. You‘ll have a faster site that both users and search engines love.

Sound good? Let‘s dive in!

Method 1: Enable Gzip Using a WordPress Caching Plugin

The simplest way to start using gzip on your WordPress site is to install a caching plugin that supports it out-of-the-box.

Two of the most popular options are:

• WP Rocket (premium)
• W3 Total Cache (free)

These plugins will automatically apply gzip compression (and other speed best practices) without you needing to touch any code.

Here‘s a quick comparison table of the two:

As you can see, the main difference is that WP Rocket is a paid option, while W3TC is free and open source. But don‘t let the price tag scare you away from WP Rocket. It can be well worth the cost in terms of the time and effort it saves you optimizing your site.

In fact, in WP Johnny‘s latest test, sites using WP Rocket were 63% faster on average than those without any caching plugin.

To start using WP Rocket:

1. Purchase a WP Rocket subscription
2. Download the plugin ZIP file
3. Go to your WP dashboard and click Plugins > Add New
4. Upload the ZIP and activate the plugin
5. Gzip will be enabled by default on Apache servers

No other setup required! You can explore the additional options if you‘d like, but the defaults are well optimized already.

Using W3 Total Cache instead? Here‘s how to enable its gzip feature:

1. Search for "W3 Total Cache" under Plugins > Add New
2. Install and activate the plugin
3. Go to Performance > Browser Cache
4. Toggle the "Enable HTTP (gzip) compression" button on
5. Save your settings

There are a ton more settings available in W3TC to tweak. But don‘t get overwhelmed! Gzip is one of the most important, so you‘re already in a good place.

Once you have either plugin running, I highly recommend testing your site in a speed tool like Pingdom or GTmetrix.

Compare the results before and after to quantify just how much faster gzip made your pages. Here‘s an example from my own testing:

Pretty awesome right? Gzip is doing a ton of work behind the scenes to accelerate your site.

Method 2: Enable Gzip by Editing .htaccess File

If you‘d rather not use a caching plugin, you can enable gzip by adding some code snippets to your WordPress site‘s .htaccess file.

The .htaccess file is like a configuration file for your site. It lets you set up redirects, restrict access, and more. Be careful editing it though, since incorrect syntax can break your site.

To turn on gzip compression via .htaccess:

1. Connect to your site‘s server via FTP or cPanel File Manager
2. Navigate to your WordPress root folder (where wp-config.php is)
3. Find the .htaccess file and download a copy as a backup
4. Edit .htaccess in a text editor and paste this at the top:

<IfModule mod_deflate.c>
  AddOutputFilterByType DEFLATE text/html
  AddOutputFilterByType DEFLATE text/css
  AddOutputFilterByType DEFLATE text/javascript
  AddOutputFilterByType DEFLATE text/xml
  AddOutputFilterByType DEFLATE text/plain
  AddOutputFilterByType DEFLATE image/x-icon
  AddOutputFilterByType DEFLATE image/svg+xml
  AddOutputFilterByType DEFLATE application/rss+xml
  AddOutputFilterByType DEFLATE application/javascript
  AddOutputFilterByType DEFLATE application/x-javascript
  AddOutputFilterByType DEFLATE application/xml
  AddOutputFilterByType DEFLATE application/xhtml+xml
  AddOutputFilterByType DEFLATE application/x-font  
  AddOutputFilterByType DEFLATE application/x-font-truetype
  AddOutputFilterByType DEFLATE application/x-font-ttf
  AddOutputFilterByType DEFLATE application/x-font-otf
  AddOutputFilterByType DEFLATE application/x-font-opentype
  AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
  AddOutputFilterByType DEFLATE font/ttf
  AddOutputFilterByType DEFLATE font/otf
  AddOutputFilterByType DEFLATE font/opentype
  BrowserMatch ^Mozilla/4 gzip-only-text/html
  BrowserMatch ^Mozilla/4\.0[678] no-gzip
  BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
</IfModule>

This code basically says: "Hey Apache web server, if a browser requests any of these file types, compress them with gzip first." The last few lines are for older browsers that don‘t fully support gzip.

5. Save your changes and re-upload the .htaccess file
6. Test your site to make sure nothing broke

If all looks good, gzip should now be enabled! Again, I suggest running a before/after speed test to see the impact.

One nice benefit of the .htaccess method is that you have more control over which file types get compressed. The plugin approach is more of an all-or-nothing deal.

Method 3: Configure Gzip in Web Server

The last way to enable gzip in WordPress is to edit your web server software‘s configuration files directly. This gives you the most granular control, but also requires the most technical expertise.

Note: This method varies quite a bit depending on your particular hosting environment. Check with your host if you have questions.

For servers running Apache, you can turn on gzip by adding mod_deflate directives to your httpd.conf or apache2.conf file like so:

<IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/plain
    AddOutputFilterByType DEFLATE text/html
    AddOutputFilterByType DEFLATE text/xml
    AddOutputFilterByType DEFLATE text/css
    AddOutputFilterByType DEFLATE text/javascript
    AddOutputFilterByType DEFLATE application/xml
    AddOutputFilterByType DEFLATE application/xhtml+xml
    AddOutputFilterByType DEFLATE application/rss+xml
    AddOutputFilterByType DEFLATE application/javascript
    AddOutputFilterByType DEFLATE application/x-javascript
</IfModule>

For servers running Nginx, enable gzip in your nginx.conf file:

gzip on;
gzip_vary on;
gzip_min_length 10240;
gzip_proxied expired no-cache no-store private auth;
gzip_types text/plain text/css text/xml text/javascript application/x-javascript application/xml;
gzip_disable "MSIE [1-6]\.";

After making your changes, restart your web server software and test thoroughly.

Verifying Gzip Compression is Working

Whichever gzip implementation method you chose, definitely verify that it‘s working before calling it a day.

Some easy ways to check:

• Use an online gzip compression test like gziptest.com
• Run your site through a speed test tool and look for a gzip audit
• Inspect your page sizes in your browser devtools network panel
• Look for gzip headers in your HTTP response using curl or Chrome devtools

If any issues arise, make sure to revert your changes and troubleshoot. Gzip should not cause any visible changes to your site, so if you spot new errors, that‘s a red flag.

Additional Website Speed Best Practices

I hope you‘re pumped to have gzip compression enabled on your WordPress site! It‘s one of the best quick wins you can make for your page speed.

But don‘t stop there! To get your site loading lightning-fast, implement other optimizations like:

• Choosing a lightweight, well-coded WordPress theme
• Auditing your plugins and disabling unnecessary ones
• Optimizing your images to reduce their file size
• Minifying CSS, JS and HTML files
• Setting up browser caching and a CDN
• Enabling lazy loading for images/videos
• Cleaning your database with WP-DBManager
• Upgrading to faster hosting as your traffic grows

Put all those together and you‘ll have one of the snappiest sites on the web. Guaranteed.

Wrapping Up

See, I told you enabling gzip compression in WordPress was easy!

Whether you used a caching plugin, .htaccess, or your server config, you‘re now enjoying much faster page loads.

And that means happier visitors, more engagement, and even better search rankings. All huge wins for your WordPress site.

So give yourself a pat on the back. You just made the web a little bit faster.

If you liked this guide, check out my other WordPress performance tutorials. I‘m always sharing the latest speed tips and techniques.

Now go forth and dominate the search results with your blazing fast WordPress site! And if you have any other questions about gzip or optimization, drop me a comment below.