A step-by-step guide on how to optimize your WordPress installation:
We’ve listed some plugins and written some recommendations for our WordPress users seeking optimization help.
Note: These plugins address mainly front-end optimization issues only. If your site still takes a long time to load, an improved server or back-end code optimizations is what will make a real difference.
Step 1) Scale your images (Optional)
In WordPress, you can insert smaller sized images based on what WordPress has generated for you.
Basically, you do not want to serve images that are larger in dimensions than what your user needs to display.
Step 2) Install and activate WP Smush (Smush Image Compression and Optimization)
Under the “Media” section in your WordPress sidebar, you’ll have access to a new menu option called “WP Smush”
In this section, ensure that the “Auto-Smush Images on upload” feature is checked. The plugin will now optimize every image you upload henceforth since you activated it.
Next, smush all of the images in your Media Library by clicking on “Bulk Smush 50 Attachments” (The free version of the plugin is limited to bulk smushing 50 attachments at a time. You’ll need to revisit this page and bulk smush the next 50 attachments).
Step 3) Install and activate WP Fastest Cache OR Any Good Cache Plugin
On the sidebar, you’ll notice a new option called “WP Fastest Cache.”
a) Enable the following settings:
- Cache System
- Enable caching for faster delivery of pages.
- Upon clicking this, you’ll get a popup telling you which pages to cache.
- Check all of them and leave the “pages per minute” at 4 – click “OK”.
- You may need to reduce this number if your hosting service complains.
- Logged-in Users
- Ensures that if you’ve logged in, you see the actual state of your pages, not the cached versions.
- Minify HTML*
- Compresses HTML and reduces file size.
- Minify CSS*
- Compresses CSS and reduces file size.
- Combine CSS*
- Joins your CSS files into a single CSS resource, reducing number of HTTP requests.
- Combine JS*
- Further compress your pages to be smaller in file size and faster to download.
- Browser Caching
- Helps with the Leverage browser caching recommendation.
lick “Submit” when you’re done.
That’s it for the WP Fastest Cache settings!
Minification and Combining
Because these processes modify data, they sometimes break functionality due to coding typos, syntax errors, duplicate function names, etc.
Make sure to check your site functionality after enabling the minification/combining features. If you find things are broken, disable all minification/combining features, and re-enable them one-by-one to find which feature is causing the issue.
If your hosting environment supports HTTP/2, combination of scripts is not needed, as the HTTP/2 protocol supports multiplexing – essentially allowing multiple downloads using a single TCP connection (as to only 6 parallel connections in HTTP/1.x.)
Whenever you make major changes to the site, like adding a plugin or modifying the CSS/theme, its recommended to delete the cache and preload it again to ensure you’re serving the latest version of the site. You can find the option to delete the cache in WP Fastest Cache in the “Delete Cache” tab.
WP Fastest Cache will automatically preload the cache again after you’ve deleted it. New content like posts or pages do not require you to delete the cache.
Step 4) Analyze your site
Analyze your site again (via GTmetrix.com) and see the difference in performance!
You should see improvements in the following metrics:
- Fully loaded time/Onload time
- Total Page Size
- PageSpeed/YSlow scores
- Serve scaled images
- Optimize images
- Leverage browser caching
- Minify CSS/HTML
- Enable gzip compression
- Make fewer HTTP requests
Your mileage may vary! Due to the varying nature of WordPress installations, plugin usage and hosting environments, you may not be able to considerably affect all of the above metrics. Things like third-party resources (Facebook widgets, YouTube embeds, etc) and ads can still heavily affect your score.
Before and after following our WordPress Optimization Guide.
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