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Web site velocity is arguably one of the essential metrics for any web site — for some websites, the distinction of a single second can add up to hundreds of {dollars} of missed (or gained) income. This makes precisely measuring website velocity essential. Sadly, website velocity isn’t a significantly straightforward metric to measure. On this article, I’ll present you the way to use one of the standard instruments out there, GTmetrix, to successfully gauge a web site’s velocity.

4 Necessary Speed Test Concerns

Many instruments — together with GTmetrix — are nice, however fairly ineffective if all you do is a one-off velocity test. As a substitute, you’ll want to run a number of exams and experiment with different components to get correct outcomes.

Listed here are a number of the largest components to think about…

1. Variety of Assessments

To get a actually good complete set of knowledge, you want to do a complete lot of velocity exams, ideally at completely different occasions all through the day. The best can be to schedule an hourly take a look at and depart it working for about a week or so.

The explanation for that is your web site’s efficiency will change all through the day, relying in your customer depend and even the utilization of your server field for those who’re on a shared host.

A pleasant side-effect of this take a look at is that you just’ll see your peak hours — which might doubtlessly point out the very best time for you to publish new content material or goal adverts or popups to your guests.

That stated, there’s nonetheless lots to be discovered by doing simply 5 or ten exams over the course of an hour or so. Though the precise load velocity given in seconds could change over the course of a day (and even week), a number of the issues GTmetrix can reveal — similar to most of the suggestions it’s going to yield on how to velocity up your web site — received’t change with time in any respect.

2. Test Places

The proximity of your website to the take a look at location (or a actual human customer) performs a huge position in your take a look at outcomes due to physics (we nonetheless haven’t discovered how to change the velocity of sunshine!).

Due to that, the situation you take a look at your website from makes a huge distinction.

Generally, you need to decide a take a look at location that’s as shut as doable to your goal guests (which also needs to be shut to the bodily location of your internet hosting server).

In case your web site solely targets one location, all you really want to care about is the take a look at outcomes for that location.

Nevertheless, for those who’re focusing on a international viewers, it is best to decide 4 or 5 testing servers in key places around the globe. Strive to unfold them out if doable — e.g. select a minimum of one server from the US, one from Europe, one from Australia and one from Asia.

To give you the option to select the situation from which to take a look at your website utilizing GTMetrix, you’ll want to register for a free account.

When you’re focusing on a international viewers and also you discover below-average web page load occasions for sure areas, that could be a signal you want to begin utilizing a content material supply community (CDN).

3. Test Targets

I typically see individuals testing ONLY their homepage. That is a huge mistake that may skew issues a lot greater than it’s possible you’ll assume. To begin with, your homepage could be the least data-intensive web page in your website, making it naturally the quickest.

Additionally, your homepage might not be as essential as you’d like to assume. I labored on a website that acquired 97% of its visitors organically by means of search engines like google — virtually all of which went to single posts/pages. So, ensure to give attention to extra than simply your homepage!

Briefly: The velocity of your homepage is essential, however it might be secondary to a lot of your different pages, so ensure to additionally take a look at a variety of others, similar to single publish pages, retailer pages and product pages to get a well-rounded set of outcomes.

4. Test Gadgets/Connection Speeds

When most individuals take a look at the velocity of their website, they solely take a look at the desktop expertise and ignore the cell expertise.

That is a huge mistake, as cell visitors accounts for greater than half of all web visitors.

What’s extra, your website velocity may be considerably completely different on cell units than desktop units. For instance, most cell units, particularly low-powered ones, will take longer to course of JavaScript than desktop computer systems. So, in case you have a JavaScript-heavy website, your cell load occasions might be a lot slower than your desktop load occasions.

Connection velocity is one other essential consideration. Not all your guests shall be utilizing ultra-fast wired connections. For instance, they might be shopping from their cellphone on 4G — that will even lead to slower web page load occasions.

If you would like to get an correct image of how these guests expertise your website, it’s helpful to experiment with completely different units and connection speeds.

GTmetrix will allow you to take a look at completely different connection speeds totally free, however you’ll want to pay for a premium account if you need to take a look at utilizing a cell system.

How to Use and Perceive the Fundamental GTmetrix Speed Test

Fundamental use of GTMetrix is free. Whilst you can go to the essential web page and begin analyzing your website instantly, I’d advocate first registering for a free account as a result of it’ll offer you a lot extra flexibility.

If you use the essential velocity take a look at as an nameless visitor, you’re compelled to use the next configuration:

  1. Test from Vancouver, Canada.
  2. Use a desktop Chrome browser.
  3. Use an ultra-fast unthrottled connection.

When you’re focusing on a Canadian viewers, that could be effective, however, if not, you’ll need to take a look at from a completely different location.

If you register for a free GTmetrix account, you open up a ton of recent configuration choices that’ll make it easier to to handle the concerns we mentioned above.

  • Places — Dallas (USA), Hong Kong (China), London (UK), Mumbai (India), Sydney (Australia), Sao Paulo (Brazil), Vancouver (Canada).
  • Test units — Chrome (Desktop) and Firefox (Desktop) totally free. With a paid plan, it’s also possible to take a look at Chrome on a Galaxy Nexus Android system.
  • Connection speeds — numerous choices from Broadband down to 56ok (dial-up — keep in mind these days?).

The free account additionally offers you entry to extra evaluation instruments — extra on these later.

When you’ve created your free account, you may:

  1. Enter your website’s URL within the field.
  2. Click on the Evaluation Choices accordion button to broaden the additional choices.

To get an correct image of your website’s load occasions, it is best to make a minimum of two decisions:

  1. Choose the situation nearest to your target market utilizing the Test URL in drop-down.
  2. Choose Broadband (Quick) within the connection drop-down. This may use a connection velocity that’s across the common for the USA as a complete — you may select a completely different connection velocity if that matches your wants.

How to configure a GTmetrix test

When you run your take a look at, GTmetrix will present you a abstract field that appears like this:

GTmetrix test summary

The abstract field accommodates 5 items of data:

  1. Totally Loaded Time — how lengthy it takes your website to absolutely load (that is an important quantity).
  2. Whole Web page Dimension — how giant your website is. Smaller is healthier.
  3. Requests — what number of HTTP requests your website requires. Fewer is healthier.
  4. PageSpeed Rating — a fast approximation of how optimized your front-end website relies on Google PageSpeed.
  5. YSlow Rating — a fast approximation of how optimized your front-end website relies on a completely different set of metrics from YSlow.

Don’t stress an excessive amount of in regards to the PageSpeed and YSlow scores! These scores may be a helpful information, however the one quantity that basically issues is your web page load time.

How to Use the Superior Evaluation Choices

The snapshot above offers you a good instance of your website’s present metrics, however, if you need to enhance your website, GTmetrix additionally consists of superior evaluation instruments to make it easier to to dig into your website’s efficiency. It divides these into six tabs beneath the abstract field:

  1. PageSpeed — marks your website towards the 23 suggestions from Google PageSpeed.
  2. YSlow — marks your website towards the 19 suggestions from YSlow.
  3. Waterfall — helps you to see how every particular person HTTP request masses in your website.
  4. Timings — requires a free account; enables you to see completely different timing metrics to your load occasions (we’ll clarify this beneath).
  5. Video — requires a free account; enables you to movie a video of how your website visibly masses.
  6. Historical past — enables you to monitor your website’s efficiency over time.

PageSpeed And YSlow

PageSpeed and YSlow provide two barely completely different methodologies of gauging how a web site’s construction and mechanics affect its velocity. The outcomes of those comprise their very own suggestions for making issues sooner, similar to caching, including expires headers, minifying belongings, enabling gzip compression and the like.

Your general PageSpeed and YSlow scores are primarily based on the weighted common of the scores you obtain for particular person suggestions. Among the solutions are extra essential than others, which you’ll be able to see within the Precedence column.

To study extra about what every suggestion means and the way it applies to your website, you may click on on the arrow to broaden every part.

GTmetrix PageSpeed and YSlow results

As soon as once more: Don’t chase share scores. These may be deceptive and don’t essentially consider completely every little thing that’s essential, similar to the general dimension in megabytes of the web page (which, by the way, is usually extremely influenced by poorly optimized photos).

As a substitute, emphasize the precise web page load velocity given in seconds — aiming to shave seconds off this must be the actual objective!

You possibly can 100% have a fast-loading website with out getting excellent scores and that’s completely effective.

The Waterfall

The waterfall is likely one of the most helpful instruments for pinpointing bottlenecks in your web site’s velocity. It offers you perception into every HTTP request in your website and the place/how shortly it masses.

With out stepping into an excessive amount of element, each asset in your website is a separate HTTP request. An asset might be a picture file, a CSS stylesheet, a script, and so on.

If the take a look at abstract field says your website has 26 requests, meaning it wants to load 26 completely different belongings. It additionally means you’ll have 26 completely different entries within the waterfall evaluation.

Every asset in your website wants to be seemed up, transferred and displayed. Every bar within the waterfall reveals the entire steps concerned for every asset and the way lengthy they took.

The waterfall chart

The steps that every asset can undergo are as follows, with a little rationalization added:

  • DNS Lookup: Time to resolve the DNS
  • Connecting: Time taken to create a connection
  • Blocking: Time spent within the browser queue ready for a connection
  • Sending: Time taken to ship the request
  • Ready: Time spent ready for the response (time to first byte)
  • Receiving: Time taken to obtain content material

Primarily based on this info, you may make some assumptions about what’s occurring together with your web site.

To begin with, take a have a look at that small vertical blue line within the waterfall above (on the precise aspect). It represents the purpose at which the DOM was loaded. The purple line represents the time the web page was loaded.

The time to first byte (TTFB) can be thought of an essential indicator of your server velocity, and is proven by the ready info within the waterfall. When you’re persistently seeing a excessive TTFB (even after going by means of and enhancing the principle suggestions for enhancing website velocity), it might be that your host server is what’s letting you down!

The waterfall evaluation is likely one of the most technical elements of GTmetrix, however it’s additionally one of the helpful. When you’re nonetheless undecided how to use it successfully, GTmetrix gives a detailed information on how to learn and analyze each a part of the waterfall.


The Timings tab offers you insights into particular milestones for the way/when your web page masses.

See, when most individuals consider ‘web page load time’, they consider a single metric. However there are literally completely different definitions for when a web page may be thought of ‘loaded’.

For instance, is a web page loaded when the entire above-the-fold content material is seen to human guests? Or is it solely loaded as soon as the entire backend scripts end downloading, even when your human guests received’t work together with these scripts (e.g. monitoring scripts)?

When it comes to the expertise for precise human guests in your website, these are essential distinctions. Most people solely care about how lengthy it takes for them to begin seeing seen content material on the web page — they don’t essentially care about all of that background stuff. Your website could take a whereas to ‘absolutely load’, however for those who can load the seen content material shortly your guests will nonetheless consider your website as loading shortly.

That is why, in its new Core Internet Vitals undertaking (which shall be an website positioning rating issue beginning in 2021), Google pushes a metric referred to as ‘Largest Contentful Paint‘ as an alternative of ‘web page load time’.

The Timings tab helps you to examine all of those completely different metrics. You’ll give you the option to see the next metrics:

  • Time to first byte (TTFB)
  • First paint
  • First contentful paint
  • DOM interactive
  • DOM loaded
  • Onload

The Timings tab

One other good factor about this tab is it’s going to additionally offer you detailed explanations for every metric once you hover your mouse over the metric in query:

Observe: this report is simply out there for those who register for a free GTmetrix account.


The Video tab is one other great tool that make it easier to to gauge how your website masses to people. As with the Timings tab, it may well make it easier to to transcend the top-line quantity and uncover a number of the following:

  • When is content material seen?
  • Are there any flashes of unstyled content material? For instance, typically it takes a while for a customized font to load, so your textual content will ‘soar’ when it modifications from a system font to the customized font.
  • Are there any giant content material ‘shifts’? Typically, content material will ‘soar’ or ‘shift’ as further belongings load. You’ve in all probability skilled this on content material websites the place the textual content ‘jumps down’ when the positioning masses an advert.

The final merchandise is one other a part of Google’s Core Internet Vitals — it’s referred to as ‘Cumulative Structure Shift (CLS)‘.

The Movies tab enables you to watch a display recording of your website loading with two enhancements:

  • You possibly can decelerate the recording to 1/Four velocity, which helps you to extra simply see any content material shifts or flashes of unstyled content material.
  • You possibly can soar to main timing milestones, similar to First Contentful Paint.

For instance, right here’s what the precise second of First Contentful Paint appears to be like like at

A GTmetrix video recording

Fascinating, proper?

As a result of Google is placing extra emphasis on some of these ‘person expertise’ loading metrics, it’s a good concept to reap the benefits of this function so you may catch points.

To take a video recording, you’ll want to do two issues:

  1. Register for a free GTmetrix account.
  2. Activate the Create Video setting once you run a take a look at.

How to enable video recording in GTmetrix

Historical past

The Historical past tab permits you to view the outcomes of a number of exams on one web page in an easy-to-understand graph. It’s helpful for seeing how your web page load occasions change over time.

The GTmetrix history tab

You can even add notes, which is one other great tool. For instance, for those who switched to a new host or caching plugin, you would add a observe in GTmetrix to see how that change affected your load occasions.

How to Arrange Computerized Monitoring and Alerts With GTmetrix

One other helpful function you get together with your GTmetrix account is the flexibility to arrange computerized efficiency monitoring. You possibly can use monitoring with a free account, however it’s closely restricted, and you may solely arrange computerized exams from the Vancouver, Canada server — you may’t select the opposite take a look at places.

You possibly can select from the next frequencies for up to three URLs:

To allow monitoring, click on on the Monitor button on the high of the take a look at outcomes web page to open a slide-out to configure how to monitor your website:

How to set up GTmetrix monitoring

GTmetrix will ship you an electronic mail digest of your outcomes, and also you’ll additionally give you the option to view them from the Historical past tab.

When you pay for GTmetrix Professional, you’ll unlock the flexibility to monitor from completely different take a look at places, in addition to hourly monitoring exams and the flexibility to monitor further web sites.

When you allow monitoring, you’ll additionally give you the option to arrange customized alerts — for instance, you may obtain an alert in case your web page load time goes above a sure quantity, in case your TTFB will increase and many different circumstances.

You possibly can set these up by clicking the Arrange Alerts button within the take a look at outcomes interface:

How to set up GTmetrix alerts

Causes to Take into account GTmetrix’s Paid Plans

Up till now, every little thing you’ve seen is obtainable with the free model of GTmetrix (although you’ll want to register for a free account).

GTmetrix additionally gives a premium plan, although. So what are a number of the causes to go Professional?

You already noticed one — extra choices for computerized monitoring.

One other helpful function is the Developer Toolkit, which supplies you entry to a variety of new options:

  1. Test load occasions on a bodily cell system — a Galaxy Nexus utilizing Android.
  2. Simulate different cell units similar to iPhones, iPads and so forth. Observe: This function is simply a simulation, it received’t give you the option to take a look at precise {hardware} efficiency just like the Android take a look at.
  3. Select completely different display resolutions or person brokers.
  4. Save take a look at configurations as presets.

When you’re working with shoppers, you additionally get a function that permits you to white-label PDF experiences, which supplies you a straightforward means to present a branded deliverable to shoppers.

GTmetrix Professional begins at $14.95 a month, with costs going up from there relying in your utilization.

Speed Ideas For WordPress Customers

When you’re utilizing WordPress, there are many methods which you can implement to improve your GTmetrix scores and, extra importantly, scale back your web page load occasions.

Listed here are some fixes you may implement:

  1. Guarantee no matter internet host you’re utilizing makes use of servers which might be optimized particularly for WordPress — and, for those who’re nonetheless utilizing generic, non-WordPress-optimized shared internet hosting, change to one thing a lot, a lot sooner, similar to a hosting plan from WP Engine, Flywheel or Kinsta.
  2. When you aren’t already, begin utilizing a web page caching plugin, similar to W3 Whole Cache, WP Tremendous Cache or WP Rocket. Learn our comparability of those three plugins to decide the best choice to your wants.
  3. Take a while to undergo your website’s photos and guarantee they’re all as optimized as they are often (both re-optimize them in a program similar to Photoshop or think about using a specialist service/plugin similar to WP Smush, ShortPixel, or Imagify).
  4. Ensure that your website doesn’t have render-blocking JavaScript. Free plugins similar to Async JavaScript and Autoptimize might help you to optimize your website’s JavaScript (they’re each from the identical developer and pair nicely collectively).
  5. As painful as it might be, take away any pointless social media profiles from loading in your web page (similar to Fb, Twitter and LinkedIn — all of which might fairly actually add seconds to your web page load occasions).
  6. Allow gzip compression, minify all scripts and leverage browser caching wherever doable.
  7. Maybe most essential of all, take away each pointless plugin that could be loading all method of CSS and JavaScript information inside your pages. Though there’s technically no restrict to the variety of plugins you may set up on a WordPress-powered web site, a very normal rule of thumb is: the extra plugins, the slower the positioning!

Every other super-effective fast fixes? Be happy to depart them within the feedback beneath! 😉

For a extra in-depth strategy to WordPress velocity optimization, take a look at these two detailed guides:


If you would like a quick web site, you’ll want a complete software to take a look at it underneath a variety of circumstances. GTmetrix enables you to do precisely that. By organising computerized monitoring and testing from completely different places, it’ll offer you a full image of how your web site performs.

Used correctly within the battle towards sluggish website speeds, GTMetrix additionally equips you with greater than sufficient info to combat again by analyzing your website’s efficiency and making enhancements.

Simply keep in mind to take a look at greater than solely your homepage, to take a look at every web page greater than as soon as and from a number of places, and to maintain the give attention to really lowering these load occasions reasonably than on maximizing the PageSpeed and YSlow share scores!

Know of every other/higher methods of measuring a web site’s velocity? Ideas?

Colin Newcomer is a freelance author and long-time Web marketer. He makes a speciality of digital advertising and marketing and WordPress. He lives a lifetime of hazard, driving a scooter by means of the chaos of Hanoi.

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