A slow website loses visitors. Research shows that a 1-second delay in page load time reduces conversions by 7%. Here are 10 proven techniques to dramatically improve your WordPress site speed.
1. Use a Lightweight Theme
Themes like GeneratePress or Astra load under 30KB. Avoid page-builder-heavy themes that bloat your HTML output with unused CSS and JavaScript.
2. Install a Caching Plugin
WP Super Cache or W3 Total Cache generate static HTML files from your dynamic WordPress pages, serving them faster without hitting the database on each request.
3. Optimise Images
Use WebP format and compress images with ShortPixel or Smush before uploading. Enable lazy loading so images below the fold only load when scrolled into view.
4. Use a Content Delivery Network (CDN)
Cloudflare or BunnyCDN distribute your static assets across global edge servers. Australian visitors benefit significantly when your CDN has a Sydney or Melbourne PoP.
5. Minify CSS, JavaScript and HTML
Plugins like Autoptimize combine and minify your scripts and stylesheets, reducing the number of HTTP requests and file sizes delivered to browsers.
6. Enable GZIP Compression
Add GZIP compression via your .htaccess file or your hosting panel. This compresses text files before sending them to browsers, typically reducing transfer sizes by 70%.
7. Limit Post Revisions
Add define('WP_POST_REVISIONS', 5); to wp-config.php to cap the number of saved revisions. This keeps your database lean and reduces autoload data.
8. Use PHP 8.x
PHP 8.x is significantly faster than PHP 7.x for WordPress. Check your hosting control panel and upgrade if you’re still on an older version.
9. Deactivate Unused Plugins
Each active plugin adds potential overhead. Audit your plugins regularly and remove anything you’re not actively using.
10. Choose Quality Hosting
Your hosting environment is the foundation. Consider managed WordPress hosts with Australian data centres for the best performance for local audiences.