You can make your website faster by optimizing and reducing its HTTP requests.
Whether your website uses a standard HTTP connection or an encrypted HTTPS connection, it will communicate with visitors through the use of HTTP headers.
When a visitor attempts to access a web page, he or she will send your website a series of HTTP request headers. Your website must then process the visitor’s request and respond with a separate series of HTTP response headers.
By optimizing these HTTP requests, your website can complete these data transfers more quickly.
What Are HTTP Requests?
An HTTP request is a type of HTTP header initiated by a visitor that asks your website for content. Before your website can send content to a visitor, it must determine what type of content the visitor is seeking. The visitor’s HTTP requests will contain this information.
After receiving the visitor’s HTTP requests, your website will respond with HTTP responses along with the requested files.
Visitors don’t create HTTP requests themselves. Rather, HTTP requests are generated automatically by a visitor’s web browser.
Whether a visitor tries to access your website directly, or if he or she clicks a link to it, the visitor’s web browser will automatically generate and send a series of HTTP requests to your site.
How HTTP Requests Affect Load Times
HTTP requests affect load times by dictating how many files, as well as how much total data, your website sends to visitors.
For a web page to completely load, the visitor must download all of its files. HTTP requests contain instructions that tell your website which files it needs to send to visitors.
The more files your website must send to a visitor, the longer it will take the visitor to load the web page. Additionally, visitors will spend more time downloading large files than small files.
HTTP requests govern the specific files that your website must send to visitors, so they greatly influence load times.
How To Reduce HTTP Requests
Now let’s walk through some of the most effective ways to reduce HTTP requests and speed up your website.
Delete Junk Images
If an image doesn’t offer any value or purpose, you may want to delete it.
Allowing unnecessary images to go unchecked will inflate the number of HTTP requests your website must process, thereby slowing down your site.
Web browsers automatically generate an HTTP request for each file, including images, on the visited web page. If a web page has 15 images, that’s an extra 15 HTTP requests your website must process on top of all the page’s other files.
You can still use images when developing web pages. If an image doesn’t offer value, though, deleting it will speed up your website.
Compressing the images that you decide to keep on your website can reduce the size of its HTTP requests.
Each image on a web page will generate an HTTP request from visitors, regardless of whether they are compressed or uncompressed. But your website can process and respond to these HTTP requests more quickly if you use compressed images.
Or, if you use WordPress, you can use the Imagify plugin to automatically resize and compress your images on-the-fly as you upload them.
Once compressed, your image files will be smaller in size. As a result, your website can send them to visitors more quickly upon request.
Consolidate CSS Files
If your website uses multiple CSS files, consider consolidating them into a single CSS file.
Like images, each CSS file called upon by a web page increases the number of HTTP requests for that page. A web page with multiple CSS files will typically take longer to load than a mirror web page with a single CSS file because it has more HTTP requests to process.
CSS file consolidation involves copying all your website’s CSS code and pasting it into a single file. After consolidating the CSS code, you’ll need to update the CSS links in your website’s HTML files so that they all point to the same consolidated CSS file. You can then delete the old CSS files from your website.
If you use WordPress, you can do this automatically using a caching / speed optimization plugin. Check out our recommendations here. 👈
Again, you can do this automatically with the right WordPress plugin.
Instead of hosting videos natively on your website, embed them from another platform.
When embedded, your website won’t have to send video files to visitors upon request. The platform hosting the embedded videos will handle all video file transfers requested by your website’s visitors.
You can embed videos by uploading them to YouTube. Once uploaded, grab the videos’ embed code by clicking the “Share” link, and paste them into your website’s HTML code. As the hosting platform, YouTube will process visitors’ requests by sending the video files to their web browsers.
Activate Browser Caching
Activating browser caching can reduce the number of HTTP requests your website must process.
Browser caching is a server technology that prompts visitors to locally store static files after initially downloading them. When visitors access a web page for the first time, they’ll download all of the page’s files.
The easiest way to activate browser caching is to use a plugin that’s compatible with your website’s content management system (CMS).
You can find a detailed comparison of these caching plugins here.
You can also activate browser caching manually using a
.htaccess file. For instructions on how to use a
.htaccess file for browser caching, check out this GTmetrix tutorial.
Your website’s speed is heavily impacted by HTTP requests.
These browser-generated messages determine what files your website must send to visitors. When visitors access your website, they’ll generate HTTP requests that your site must process and respond to.
The good news is that you can optimize and reduce your website’s HTTP requests to prevent them from slowing your performance.
Want to learn more about WordPress speed optimization? See how we achieved <1s load times with our definitive performance guide. 👈
If you have any questions about reducing HTTP requests, please feel free to leave a comment below!