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Using too many HTTP requests: Each time a browser requests a resource, it must wait for the server to respond. Minimizing the number of requests can significantly improve page load times.
Not using a Content Delivery Network (CDN): A CDN can help distribute resources to users based on their geographic location, reducing the distance data has to travel and improving load times.
Not optimizing images: Large, high-resolution images can significantly slow down page load times. Optimizing images by compressing them or using responsive images can help improve load times.
Not using browser caching: Browser caching allows frequently-used resources to be stored in the user’s browser, reducing the number of requests to the server and improving load times.
Page load time is important for several reasons:
User Experience: Long page load times can negatively impact the user experience and cause users to leave the website.
SEO: Search engines like Google consider page load time as a ranking factor. Websites with faster load times are more likely to rank higher in search results.
Conversion Rates: Slow-loading pages can lead to higher bounce rates and lower conversion rates, resulting in a decrease in revenue.
Brand Reputation: A slow-loading website can give the impression that a company is out of date or unprofessional.
Mobile Optimization: With the increase in mobile internet usage, page load time is even more crucial as mobile devices often have slower connections than desktop computers.
Overall, faster load times can lead to a better user experience, increased search engine visibility, improved conversion rates, better brand reputation and mobile optimization.
Large files: Large files such as images, videos, and scripts can take a long time to download and can slow down the page load time.
Too many HTTP requests: Each time a browser requests a resource, it must wait for the server to respond. Minimizing the number of requests can significantly improve page load times.
Poorly optimized code: Poorly written code can slow down the browser’s rendering process, resulting in longer page load times.
Browser caching: Browser caching allows frequently-used resources to be stored in the user’s browser, reducing the number of requests to the server and improving load times.
Third-party scripts: Third-party scripts such as analytics, social media buttons and ads can slow down page load times by adding additional HTTP requests.
Use a Content Delivery Network (CDN) to distribute resources to users based on their geographic location, reducing the distance data has to travel and improving load times.
Optimize images by compressing them or using responsive images.
Use browser caching to store frequently-used resources in the user’s browser.
Minimize the use of third-party scripts and consider lazy loading them
Use a tool to measure and analyze page load times to identify any bottlenecks and areas for optimization.
Regularly check and update your website, remove any unnecessary elements that slow down the website.
Use a framework or a library to help you optimize your website.
Use the latest version of browser and be sure that your website is compatible with them
Make use of prefetching, preloading, prebrowsing to improve the load time.
Is your website too slow? Then, it is time to take some action to resolve this matter. Even it’s not the case; you might be curious to find out the common pitfalls developers make that affects page load time.
The load time of a page is directly related to the website’s perceived performance.
When it comes to websites, If it takes more than 3 seconds to load, you will lose half of your visitors before they even arrive on your website.
Let’s look at a few examples based on research done by HubSpot.
According to the above facts, you can see how important page load time is for your website.
Many factors affect page load time. Out of those, I’ve listed the top five mistakes I’ve come across while building websites.
HTTP requests are made whenever the browser needs to fetch a file, page, or image from a web server. You can monitor how your applications make many network requests through the
Network tab in Developer Tools.
The browser usually limits the number of simultaneous requests between 4–8. Therefore, you cannot make a large number of requests in parallel either.
Research done by Yahoo states that 80% of your application load time depends on HTTP requests. Reducing the number of HTTP requests will increase your page load time.
You can do the following to reduce the number of HTTP requests.
If there is no CDN for your website, load time increases when the user’s physical location is far from the server. These latencies get visible since it affects all the HTTP requests to the server.
Using a CDN will improve page load time.
Using a CDN will enable users to fetch the resources required for the webpage from a server nearest to their location. Servers in a CDN are distributed across various geographical locations. This method may be a bit expensive, but it is an effective way to improve your application load time.
For example, if your original server is in California, your Content Delivery Network may look like this.
However, it’s also important to properly configure CDN to cache content with the right Time To Live (TTL) values for efficient usage.
But what happens for the very first request or once the CDN cache gets expired, since it might travel to the origin to fetch the data?
This is where things get interesting. If you are operating on a scale where the impact of loading data from the origin is high, you could consider warming-up your CDN once in a while to repopulate the cache.
Also, keep in mind, most of the CDN services owns their network backbone, where they can provide higher Quality of Service compared to the internet. This will reduce packet loss resulting in faster loading times.
Tip: Share your reusable components between projects using Bit (Github).
Bit makes it simple to share, document, and reuse independent components between projects. Use it to maximize code reuse, keep a consistent design, collaborate as a team, speed delivery, and build apps that scale.
Bit supports Node, TypeScript, React, Vue, Angular, and more.
Retrieving a large file or a page from the web server will consume a lot of time. Fetching a few such large files makes the page size large and makes the page load time more.
Reducing file sizes by enabling compression can improve page load time.
Compressing files is the best way to reduce file sizes and improve load time. Gzip is commonly used to enable compression. Gzip locates similar code in your files and temporarily replaces them to make files smaller. Most web servers support Gzip compression.
Another compression scheme is available called Brotli compression, which you can also consider depending on your file types.
Enabling compression for your HTML or CSS files usually saves about 50% or 70% of the file size, resulting in less page load time and less bandwidth used.
You can further reduce the page load time by reducing the size of the images used in your application.
Loading all your HTML, CSS, and JS files at the same time will increase page load time as rendering will get blocked until all these resources are loaded.
Loading JS files after other elements will improve page load time.
If you have an HTML site, you need to place a call to an external JS file (defer.js) before your
The above code says, “Wait for the entire document to load, then load the external defer.js file.”
Most of the time, we use redirects to handle moved or deleted pages to avoid broken links. However, more redirects mean more HTTP requests. This increases page load time drastically. Google advises site owners to eliminate redirects to improve load time, especially on mobile-first sites.
You can use a tool like Screaming Frog to identify all the redirects in your application. By analyzing this, you can clear up any unnecessary redirects.
When it comes to redirects, there are two types.
It is best to avoid client-side redirects and keep server-side redirects at a minimum to optimize your web page load time.
Who doesn’t love a website that loads faster? I hope the article convince you enough regarding the importance of page load time.
If you are thinking of evaluating your website performance, there are many tools that you can use, such as Google Pagespeed Insights, Pingdom, YSlow, etc. These will give some insight into where your website falls behind.