WordPress Site Speed Optimization
Is your WordPress site slow? A slow site drives away visitors and also negatively affects search engine visibility. That's why site speed is one of the most important factors for user experience, search engine optimization, and conversions.
Fortunately, you can speed up your WordPress site with a few effective methods.
Site speed optimization starts with choosing a good server or WP web host. Web hosting significantly affects your site's loading speed.
In this article, we'll take a closer look at how you can easily speed up your WordPress site!
3.7.2025
The author is an employee of Hostaan Oy and WordPress expert who also works in blog article production, helping small businesses succeed online.
WordPress site speed starts with carefully building the foundation. The right web host or server choice and proper WordPress settings are key to speed optimization.
Server selection is one of the most important factors in WordPress site speed optimization. Consider at least these things:
Fast SSD storage is a necessity today, as SSD drives are up to 20 times faster than traditional hard drives
PHP 8.0 or newer significantly improves site speed
Web host location should be chosen according to your customer base: for Finnish customers, a server located in Finland
Hostaan offers web hosting on Finnish and ultra-fast servers that use fast SSD drives. Hostaan's WP web hosts also support the latest PHP versions (8.4 at the time of writing).
WordPress installation optimization starts even before adding content. Here's how to achieve the best performance:
Install only essential plugins - each plugin slows down your site
Choose a lightweight theme - complex themes increase loading time
Enable Nginx Cache - caching speeds up your site
When installing your WordPress site, enable the HTTPS protocol. It not only improves security but also speeds up your site with modern browsers.
Hostaan's web hosts automatically activate HTTPS and Nginx Cache.
WordPress site speed significantly affects both user experience and search engine visibility.
The right plugin choices and a lightweight theme are the cornerstone of speed optimization.
Improve Performance with Plugins
Caching plugins are essential for speeding up your WordPress site. They save a static version of your site in cache, so each page doesn't need to be loaded from the database every time.
Recommended caching plugins:
WP Rocket - The paid version offers features for power users
W3 Total Cache - Free and versatile
WP Optimize - Automatically installed on Hostaan servers
Image optimization is another important area. Large images significantly slow down your site.
Image optimization tools:
Smush - Reduces image file sizes without quality loss
WP Optimize - Also includes image optimization tools
SEO plugins help with search engine optimization and improving site structure. SEOPress is a newer and lightweight option that doesn't burden the site too much.
Choose a Fast and Lightweight Theme
Theme selection directly affects your site's loading speed. A heavy theme slows down the entire site regardless of all other optimization measures.
Features of fast themes:
Minimalist structure
Little JavaScript code
Responsiveness without extra "ballast"
Good options include:
GeneratePress - Lightweight and customizable
Astra - Fast and compatible with page builders
Kadence - Modern and performant
Avoid themes that include many animations, sliders, or other visual effects. These can significantly slow down site loading.
An SSL certificate not only improves security but also your site's loading speed. The HTTPS protocol enables the use of HTTP/2 technology, which is a significantly faster option than the old HTTP.
SSL
More trustworthy site for visitors
Better ranking in search engines
Faster data transfer thanks to HTTP/2
On Hostaan servers, SSL certificate is included as standard in all web hosting packages. Our WP web hosts are optimized for WordPress sites, ensuring excellent performance.
There are several possible solutions to WordPress site slowness. The right choices regarding theme, images, and server make a significant difference in loading speeds. Caching is one of the easiest ways to significantly improve site performance.
Why is my WordPress site so slow?
Your WordPress site's slowness is usually due to a few common reasons. A heavy theme and too many plugins are the most common culprits for site slowness. Unoptimized images and poor web hosting can also slow down your site. WordPress needs appropriate resources to function efficiently.
The possible lack of caching is one significant factor: using a good caching plugin can speed up your site by up to 200-300%.
Does the number of plugins affect my WP site's speed?
The number of plugins directly affects your site's speed. Each plugin adds code that must be loaded when the page opens. Plugin quality also matters. A poorly coded plugin can slow down your site more than five well-made ones. Check plugin reviews and update frequency.
We recommend using only essential plugins. Remove unused plugins.
How should image sizes be adjusted so that WordPress site loads quickly?
Compress images to the right size before uploading them to the site. If you display an image 600 pixels wide, don't upload a 2000-pixel wide image.
Use the right file format:
JPEG is suitable for photographs
PNG for transparent images
WebP is a new and efficient compression format
Image compression plugins like Smush or WP Optimize help optimize images automatically. On Hostaan web hosts, images are automatically optimized with the WP Optimize plugin.
Does it matter where in the world the site server is located?
Server location directly affects your site's speed. A server closer to your visitors provides faster loading times.
For Finnish visitors, a server located in Finland is the best option. Hostaan's WP web hosts are placed on servers located in Finland, so they offer ultra-fast connections for Finnish users.
If you have visitors from around the world, a CDN service (Content Delivery Network) - like Cloudflare - can help. It distributes your static content, such as images and CSS files, to multiple servers globally.
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