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Website speed testing and optimization -

JavaScript and CSS files are among the largest files on a website. They also count as individual HTTP requests. So five JS files and five CSS files would require a total of 10 HTTP request. Another way you can reduce the size of your JavaScript and CSS files is minifying them.

This technique involves removing any unnecessary code like:. This will reduce file sizes and therefore load times. You can do this manually or use a minification tool. The longer it takes your domain name server DNS to respond, the longer your time to first byte TTFB and the slower your site loads.

Free online tools can determine where your DNS provider ranks compared to other offerings, which in turn helps pinpoint specific performance issues.

Worth noting? In some cases, your hosting provider will also supply DNS services, while in others these two functions are separate. The good news is many CMS platforms provide built-in features or plugins to enable asynchronous loading for CSS and JavaScript elements, which allows them to load simultaneously.

To maximize page loading speed, use the fewest number of fonts possible, and focus on fonts that are optimized for speed. For example, in a study of the top 10 Google Fonts by KeyCDN , Open Sans had the lowest load time at 0.

Last but not least: identify performance-sapping plugins also called add-ons or extensions. Here, the speed rule is simple: Only keep the plugins you need and always deploy the latest, fastest versions.

This is particularly important if you run a WordPress website. For more advanced methods to optimize your WordPress website speed using Google PageSpeed Insights specifically, check out this video by Jack Cao:. To speed up load times for return visitors, you can add expires headers to the.

htaccess file of your site. This type of HTTP header indicates how long until cached copies of site resources expire so the browser knows whether to serve site resources from the cache or request them from the server.

Expires headers are important for two reasons. They let your browser serve up-to-date resources from the cache, which reduces server load and load time — and they prohibit your browser from serving outdated resources to visitors, which could have hurt the user experience. If your site is on WordPress, check out our guide 2 Ways to Add Expires Headers in WordPress to complete this step.

The faster your website loads, displays content, and responds to user input, the lower your bounce rates and the higher your conversions. Editor's note: This post was originally published in November and has been updated for comprehensiveness.

Speed Up Your Website with HubSpot's Built-In CDN. CMS Hub is flexible for marketers, powerful for developers, and gives customers a personalized, secure experience.

Anna Fitzgerald. Updated: May 11, Published: July 19, Topics: Website Performance. Don't forget to share this post! Lazy Loading: How It Decreases Load Time and Increases Engagement. Page speed optimization is one of the most popular services we provide. Complex speed issues tackling bring fruitful results: decrease the bounce, exit, and cart abandonment rates; increase add-to-cart and conversion rates.

We ran a website speed test, and after a major website performance optimization for Timetravels , this Finnish tour provider achieved the following outcomes:. It takes a professional approach and painstaking work to reduce the load time and achieve really impressive results.

And to make them sustainable, there's a need for ongoing technical support: performance testing, looking for occurring bottlenecks, updating and upgrading infrastructure, optimizing new content, and so forth.

The need for optimization is here to stay, so you need to prepare for the long haul. Before we delve into the tips and tricks on how to improve page load speed, we need to determine some benchmarks.

Well, there's no strict consensus on how fast a website must be to satisfy users. Several years ago, Google recommended keeping it under 3 seconds for mobile sites because of the dependence between the speed and bounce rate we mentioned above.

Now, experts tend to name the 2 seconds as a perfect speed for both mobile and desktop websites. However, on mobile, you need to put more effort into reaching such a great result. When it comes to Google, the benchmarking is quite concrete. The largest Contentful Paint LSP metric used to evaluate page loading experience perceived load speed states that if the biggest piece of content above the fold usually an image or text block is loaded within 2.

But you should think not only about the initial page load times but also about interactivity , which is how quickly pages react to users' actions. Eventually, it's also about website performance.

So, the First Input Delay FID and Interaction to Next Point INP , which is to replace FID in , must also be under control. All in all, aiming to pass the Core Web Vitals assessmen t with flying colors is a good strategy.

Besides, draw attention to other Web Vitals such as Time to First Byte TTFB; read our guide on how to improve server response time , Speed Index, First Contentful Paint FCP , Total Blocking Time TBT , and Time to Interactive TTI.

How do we track all these indicators? Apart from Google Pagespeed Insights, you may consider another speed test tool: Google Lighthouse, Pingdom, GTMetrix, and more. It's better to measure website performance multiple times and draw attention to lab and field data.

PSI is optimal since it's a free tool that provides both data types for a more holistic picture of site performance.

Here, we'll discuss actual tips on how to improve website performance. While speed issues and best practices are similar for all sites , each platform, architecture, and site's current condition determine how exactly we should implement the measures and what we can skip.

In practice, we first conduct a website speed analysis and then create optimization strategies. This list will help you understand which snags to look for and what the work scope might look like.

The most obvious answer to the "How to reduce page load time? This is what saves your website from handling requests and generating the same content over and over again when users request it. Caching settings play a crucial role in this process, allowing you to fine-tune how and what content is stored and retrieved.

Most of the time, caching is utilized for static assets not changing frequently or not changing due to users' actions: images, videos, CSS, and JavaScript files. It's even possible to create an advanced strategy to cache dynamic content. There are several types of caching working the best way in combination.

Media files are vital for the website, especially if we're talking about online shops or travel agencies. Being the largest files on the page, unoptimized photos detrimentally impact load times and may ruin the user experience.

Here's how you can act to insure against poor website performance in this case. Read our comprehensive guide on image optimization.

Is your server hosting up to snuff? It should be modern and powerful enough to store and manage the website's code, media files, databases, CMS, web server, and so on. It also should have enough capacity for your average traffic and seasonal spikes.

If you have some misgivings on these points, check out whether the used hosting is optimal for your specific site and its needs.

The next step in sprucing your website up is checking out all extensions. While expanding functionality or enhancing appearance, add-ons might lead to website performance issues.

And if you have a significant number of plugins, the situation worsens. There are two typical reasons why. The UI is quite easy with only one input field for the URL.

While many other tools in this list allow you to customize requests, set up alerts, and select different locations to run your tests, Google PageSpeed Insights will not give you those options. Uptrends offers a straightforward test from one of 10 locations and you can configure the test to run either from a mobile device or a desktop.

For the desktop test, you can also pick the resolution of the screen one of four browsers Chrome, Firefox, PhantomJS, and IE and bandwidth throttling to test the site under different speed scenarios. See Sematext vs. Uptrends to see how we stack up. org is an open-source website performance testing tool that allows you to benchmark your website from one of its 40 locations and a wide range of devices.

You can also choose to simulate your tests over a slow mobile network or a fast 4G network. The result will be graded from F to A and will include information on compression, TTFB, caching, waterfall charts for the resources load speed, and more.

It also features a rather special test where they run a test 3 times and displays all three data sets. This helps figure out if the DNS or CDN might cause any delay and if the server can respond to all requests. GTmetrix allows you to get detailed information on your page speed, timings, performance score, and much more.

GTmetrix also provides information about how to fix the issues that were exposed by the test. This should paint a better picture of how your website works in different scenarios.

Varvy PageSpeed Optimization is a free tool that tests your website performance and provides tips on how to create a better experience for your users.

It was created by Patrick Sexton, who also created Getlisted. Varvy PageSpeed Optimization breaks down your report into 5 sections describing the general summary of the test, a resource map, details on CSS delivery, Javascript usage, and a number of separate information on Image Optimization, browser caching, compression, and server response.

With dotcom-monitor, you get 25 different locations and 7 different browsers that include Blackberry, which should make me think they really need to update their service, or perhaps they are historians.

Site24x7 is a simple product that offers a free alternative to Pingdom. Check out our page on Sematext vs Site24x7. Yellow Lab Tools is a newer addition to the website monitoring scene and provides basic information about your website without beating around the bush. The first thing you see once you run the test is a grade with a score followed by the test details that include the page weight with all the details related to it, request details, Dom details, bottlenecks, CSS details, and server configuration details.

All in all, it is a great tool but it does seem like it lacks in-depth when it comes to detailed information especially when you compare it with the other tools in this list.

DareBoost performs a detailed analysis from multiple locations across the world from both mobile and desktop. Their dashboard is quite simple yet provides a lot of information like the First byte, the moment it starts rendering the page, and when it finishes and goes on to provide tips on how to improve overall performance.

YSlow is an open-source tool that lets you analyze page speed and help you figure out performance based on Yahoo! You get it by installing their Free Chrome, Firefox, Opera, PhantomJS, and Safari extension and can even be installed via Node.

It provides information about your web page components, statistics on load time and performance, grades your website and provides suggestions on how to improve your performance. Powered by Google Lighthouse, Geekflare Website Audit is a simple website speed test that provides basic actionable information about your website.

Besides data like TTFB, SEO score, performance score, and others you get a series of snapshots of your website loading. A great feature of the Geekflare Website audit is its request waterfall chart that allows you to see how your resources are being requested and loaded.

This chart could make the decision to defer the loading of different resources in order to get the First meaningful paint number down as much as possible. Uptime totally different from UptimeRobot. com is a monitoring tool that lets you check your website, server, and APIs. Alongside their synthetic monitoring solution, they also offer page speed monitoring, real user monitoring, server monitoring, and a bunch of other services.

Make the Spee Faster. Discover Website speed testing and optimization and information to help you build high-performance websites. Wesite with Website speed testing and optimization Insights Get Beta-carotene and eye health PageSpeed score optimizatipn use PageSpeed suggestions to make your web site faster through our online tool. Run Insights Read docs. Speed up with the PageSpeed Modules Run the open source PageSpeed Modules on your Apache or Nginx server to automatically rewrite and optimize resources on your web site. Learn more about the PageSpeed Modules. According Website speed testing and optimization Webslte conducted tfsting Backlinko :. To achieve this level of web Athlete meal prep, you wnd strike teesting right balance Website speed testing and optimization regular testing and applying site speed optimizations promptly. The popular site speed testing tools have a similar UI and data visualization, but that doesn't mean the information they give you is the same. For instance, you might use one tool for checking your Core Web Vitals. Another for testing your website from different locations.