How To Test Your Website Speed


Analysis from Google discovered that web site bounce charges improve by as a lot as 31% from one-second to three-second load instances.

In my expertise, web page load instances are probably the most constant technical errors internet builders and internet admins make, particularly over cellular gadgets.

Step one to resolving web page pace errors is knowing how web sites load and figuring out essentially the most crucial metrics, which result in sooner load instances.

Understanding Web page Velocity: How Web sites Load

The web could be very difficult.

So to simplify this rationalization, we will break down the web page load course of into two important parts, which talk with each other.

Purchasers <> Servers

  • Purchasers: An online system that sends a request over the web to a server to render a webpage. Examples of purchasers embody pc gadgets related to WiFi, cellular gadgets related to information plans, and browsers used to execute this perform.
  • Servers: A pc that shops internet addresses and makes an attempt to render requests so purchasers can view a webpage. Servers can also be referred to as the DNS (area identify system), which homes each deal with accessible over the web.

Understanding the connection between purchasers and servers will aid you uncover any potential disruptions or will increase in latency that plague your web site web page pace.

As everybody is aware of, step one to loading a webpage is typing within the URL. This URL sends a request to a DNS, which fetches the distinctive IP deal with and processes the request on the net utility’s server.

As soon as the request is processed, the person’s browser will ship an HTML response to start processing the Doc Object Mannequin (DOM). The time to obtain this info is named the time to first byte (TTFB) – a significant web page load metric.

As soon as the browser processes the HTML response, it should map out the DOM and CSS Object Mannequin to execute JavaScript.

Earlier than correct rendering of a web page can start, a browser must render all CSS and JavaScript components, which signifies that if there are any exterior blocking scripts, that useful resource will have to be downloaded.

Then, one other request between the browser and server should be made (rising load instances).

As soon as full, a window load occasion will probably be triggered, and the web page will totally load above the fold.

Additionally, notice that pages with asynchronous loading will proceed loading components even after window load occasions are executed.

Nonetheless, web page load instances will differ between desktop and cellular gadgets, relying on the mobile-friendliness of the web site and the community the system makes use of to connect with the web.

For instance, Google establishes its benchmark for cellular web page speeds to load by not less than one second for all above-the-fold content material in order that customers can work together with websites as quickly as potential.

Since community latency over a 4G community will eat not less than 300 milliseconds of web page load instances, you’ve got 700 milliseconds to optimize a web page to load above-the-fold content material in not less than one second.

Load timesScreenshot from, March 2023

Reaching this benchmark is feasible however tough.

So, why does Google suggest that pages load not less than one second above the fold?

The Significance Of Web site Velocity

Since Google depends on optimistic buyer expertise to retain its market share, it solely desires to serve websites that load shortly and effectively.

Consequently, it tends to prioritize pages that load sooner than others. Moreover, your analytics will are inclined to replicate this, as slower pages will incur greater bounce charges than sooner pages.

Total, there are a number of the explanation why monitoring your web page pace is important:

  • Person Expertise: Customers anticipate fast-loading pages over cellular and desktop gadgets. The slower your web page, the extra time it takes till the primary interplay and the upper your bounce price. Not solely does this affect key person metrics, but it surely may additionally lower your conversion price and would possibly affect your web site income.
  • Google Algorithms: Analysis exhibits that Google locations significance on web page pace in its rankings algorithms, particularly on cellular. How a lot this impacts rankings is unknown, however Google has said that it prioritizes components, comparable to its Core Internet Vitals (metrics listed under).
  • Performance and Processing: Web page pace is one other necessary element of web site performance and may impede fundamental processes, comparable to loading buying carts or weblog posts, which trigger excessive bounce charges.
  • Authority and Belief: A quick-loading web site communicates some degree of belief and authority, whereas having a slow-loading web site may talk that your web site is poorly constructed and even spammy.

With these components in thoughts, you received’t be capable of optimize your web site’s web page pace with out uncovering points that negatively affect it.

Moreover, you’ll uncover that web page speeds differ throughout gadgets and areas, making the necessity for fixed testing much more necessary.

Issues When Operating A Webpage Check

Not each web page pace take a look at or instrument will ship the identical outcomes.

For that reason, balancing these outcomes and understanding what metrics to take care of will provide you with essentially the most unbiased outcomes.


Initially, I might suggest testing websites with caching enabled and disabled to see the distinction.

Most instruments will sometimes ignore caching, however different instruments like WordPress can help you take a look at web page speeds with caching enabled.

Configure your caching to see if it interferes along with your outcomes or skews them from what you discover on different instruments.


Many individuals don’t account for location when testing web page speeds, however individuals in several nations and areas will expertise totally different load instances relying on their community and server proximity.

I’ve even seen individuals cut back their web site load instances considerably by internet hosting their web site on a geographically nearer server or enabling a content material supply community (CDN) – a community of distributed servers.

Operating A number of Assessments

As you’ll expertise, every web page pace take a look at might ship totally different outcomes relying on anomalies along with your web site or community.

For that reason, I like to recommend working a number of assessments on a number of instruments for essentially the most correct outcomes of what customers are experiencing.


Lastly, we should perceive the metrics most necessary to our web page load speeds.

Under, I’ve outlined just a few that can affect web page load speeds essentially the most.

Web page Load Time

This metric accounts for the overall time it takes to load a web page utterly.

Google Analytics offers a web page load time report for every of your URLs and even throughout totally different browsers.

Google AnalyticsScreenshot from Google Analytics, March 2023

Time To First Byte (TTFB)

This measures the time it takes for browsers to obtain an HTML request from a server.

Poor TTFB scores may point out that you’ve got many massive information in your web site or want to maneuver to a brand new server.

Quantity Of HTTP Requests

Each time your web page must load a file, it sends a brand new request that would function a drain on web page speeds.

Core Internet Vitals

Core Web VitalsScreenshot from PageSpeed Insights, March 2023
  • Largest Contentful Paint: The time it takes to load the most important picture or textual content component on a web page. This metric measures how briskly the precise loadout of your web page renders visually.
  • First Enter Delay: The time it takes for a person to work together with a web page (i.e., click on a hyperlink or scroll).
  • Cumulative Structure Shift: How secure your web page is. In different phrases, it measures whether or not web page components shift as soon as the web page is loaded.

Discipline Vs. Lab Information

Lastly, when measuring web page speeds, it’s important to distinguish between subject and lab information.

Discipline information takes into consideration the historic load time of a web page, whereas lab information offers information from a simulated take a look at.

Google Analytics offers subject information and a historic file of how lengthy it takes, on common, to load pages in your web site.

Alternatively, lab information, like Google’s Lighthouse, offers an approximate measurement of web page load speeds underneath set variables.

Lab information is nice for diagnosing particular points, whereas subject information is a wonderful technique to chart the progress and usefulness of your web site over time.

With the following pointers in thoughts, let’s discover a number of the greatest instruments I like to recommend each web site ought to check out to check its web site speeds.

Greatest Instruments To Check Web site Velocity

Google PageSpeed Insights

Google PageSpeed Insights is a free instrument designed to diagnose particular alternatives the place web page pace is missing.

Google PageSpeed InsightsScreenshot from PageSpeed Insights, March 2023

These recommendations will enhance your web page pace scores and improve your key phrase rankings.

This instrument additionally offers metrics for Core Internet Vitals, time to interactivity, and its normal pace index.

PageSpeed Insights makes use of Lighthouse, which offers lab information to estimate how pages load on a regular system with an excellent WiFi connection.

PageSpeed Insights is a helpful first step for uncovering surface-level points that may be simply resolved.


GTMetrix is a wonderful audit instrument for web site web page speeds that gives comparable lab information as Google’s Lighthouse with even higher visualization instruments.

The Efficiency tab tells you all the pieces you could find out about Core Internet Vitals, and the Construction tab offers alternatives to enhance web page speeds.

GTMetrixScreenshot from GTMetrix, March 2023
GTMetrixScreenshot from GTMetrix, March 2023

Nonetheless, my favourite instrument on GTMetrix is the waterfall tab which lets you visualize web page load components and the way they affect web page load instances.

Waterfall tab: GTMetrixScreenshot from GTMetrix, March 2023


Pingdom is a paid instrument, which is properly well worth the cash when you want real-time web page pace monitoring by way of its Actual Person Monitoring setting.

This instrument permits each simulated lab information and real-time subject information so that you can see how your web site performs over totally different gadgets, networks, and purchasers.

Pingdom additionally offers all the identical metrics and actionable insights that different instruments present with ongoing help to your web site.


From my standpoint, WebPageTest is the perfect free pace take a look at instrument you’ve ever heard of.

This instrument offers all the identical lab information as Lighthouse, with the power to check on a number of gadgets and networks.

A few of its most notable options embody:

  • Waterfall.
  • Video of your web page loadout.
  • Efficiency metrics.
  • Hint views.
  • A number of assessments without delay.

Most significantly, you’ll be able to see your web site because it hundreds in actual time with the Filmstrip View.

WebPage Speed TestScreenshot from WebPageTest, March 2023

WebPageTest even offers a neat little questionnaire, comparable to whether or not your web site is fast, usable, or resilient, with solutions to let you know the place your web site wants enchancment.

Google Search Console

I extremely suggest you entry the Velocity Report in Google Search Console for a extra granular take a look at particular person web page speeds.

This report offers particular person pace scores and general efficiency throughout browsers and gadgets.

Google Search Console resultsScreenshot from, March 2023

Use Search Console to watch any progress or modifications to your web site. In fact, you may also uncover a whole lot of the identical information in Google Analytics.

New Relic

New Relic presents subtle instruments to watch web page speeds over time, debug your code, and even clear up your plugins to channel sooner web site pace.

This instrument requires a subscription, but it surely has helpful options like alerting you when web page speeds drop in actual time after a change has been made to the location.

Ideas To Enhance Web site Velocity

Whereas instruments might level to particular person points along with your web site, there are some normal greatest practices you’ll be able to comply with to enhance your web site web page speeds.

Allow Compression

Massive file and picture sizes are a big drag on any web site, so enabling compression by way of an automatic plugin can assist.

There are dozens of plugins accessible for WordPress, together with favorites like Optimole and WP Rocket that contains the Imagify plugin.


Caching is one other straightforward win to spice up web site speeds quickly for repeat clients.

Internet or browser caching permits web sites to retailer small bits of knowledge on client-side gadgets, so fewer sources are fetched the following time they load an internet site.

Plugins like WP Rocket and WP Tremendous Cache enable for caching and may considerably enhance your person expertise.

Lazy Loading

One other function that caching instruments like WP Rocket or LazyLoad supply is the power to delay file hundreds till the person accesses them.

In different phrases, if in case you have photographs under the fold on a webpage, lazy loading permits an internet site to delay loading that picture till a person scrolls down the web page.

Optimize Your Server Location/CDN

Internet hosting your webpage on a geographically shut server can considerably cut back latency and cargo instances.

Nonetheless, when you distribute content material to a worldwide viewers, investing in a content material supply community (CDN) can significantly cut back latency instances and cargo speeds for individuals worldwide.

Minify Assets

In addition to photographs, CSS and JavaScript would be the two largest components of any webpage which can be required to load.

Due to this fact, minifying or eliminating pointless CSS and JavaScript sources, comparable to duplicate information, will cut back the variety of requests and downloads a shopper and server should execute to load a web page correctly.

Cut back Plugins And Pointless Code

Lastly, eliminating pointless sources, comparable to massive backend plugins, will unlock sources in your web site and put much less stress on gadgets as they attempt to load your web site.

Sadly, it’s too frequent for WordPress web site homeowners to go away behind legacy plugins lengthy after they’ve served their objective, which might significantly affect an internet site’s effectivity and performance.


Now that you simply perceive how one can take a look at your web site pace and what metrics to search for, you’ll be able to implement options to extend your web site pace and monitor how they affect your search engine optimisation rankings.

Whereas web site pace is one in all many components, the advantages of a fast-loading web site will considerably outweigh any of the prices you place into it.

Extra Assets: 

Featured Picture: Kaspars Grinvalds/Shutterstock


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