what's web performance monitoring

What’s Web Performance Monitoring?

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    Web Performance Monitoring determines how quickly a website or service reacts to user actions. Monitoring gives you useful information that can be used to speed up the service. This makes users happier, keeps them around longer, and reduces bounce rates and abandoned carts.

    Using what they learn from monitoring a website's performance, administrators can improve the site's speed, reduce the number of people who leave right away, and make it easier to use, eventually making users happier. Through this monitoring process, managers get access to important information that lets them make the necessary changes and distribute resources in the best way to get the best performance.

    Network managers can use tools to monitor website performance to get information about internet lag and network hop problems, among other metrics. Then, these different types of data are turned into reports graphs that give a clear, easy-to-understand picture of how the website or server is doing.

    How Does The Website Performance Monitoring Work?

    Most of the time, you'll use a specialised monitoring tool to check your site and see how it's doing. Metrics that an excellent tool will take a look at are: 

    • Server health: How many requests the server can process, how fast it can reply, and if it gives any server errors. 
    • Downtime: Does your site even work? How often has it been out of reach, and for how long?
    • Use of a CDN: Does a Content Delivery Network, also known as a CDN, work well to serve your site's content? 
    • Loading times: How fast does your website open when someone asks to see it? 

    In theory, you can run these checks once in a while as one-time tests to determine what to modify or improve. In practice, it's best to have a tool that runs in the background and keeps an eye on your site constantly.  

    This method shows you how your website works when traffic is high and when traffic is low. It additionally lets the application send you a message if something bad happens like your site going offline for no reason. 

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    Why use Web Performance Monitoring?

    Research indicates that a site needs just a maximum of three seconds for loading before it loses 40 per cent of its viewers (source), and Google research found that a minute's delay was sufficient to annoy users and send 20 per cent of Google's users away. Businesses do Web Performance Monitoring on their internet assets regularly to keep their brand's image and income stream safe and to avoid losing site visitors, which can be expensive.

    Let's examine why bad site speed is so bad and how performance monitoring can stop it.

    The Cost of Downtime

    Each minute your website is down, you risk missing a potential customer or irritating a current one. Once they leave, they might not come back. The more crucial the website is to reach your business goals, the more important it is that it is always live. 

    There are more risks in some businesses than in others. When it's down, a famous e-commerce site could lose hundreds or thousands of dollars per minute. Unexpected downtime on healthcare and government services websites is also clearly bad.  

    If you have a good tool for monitoring your website that lets you know as soon as the site goes down, you can move quickly to limit the damage to your finances and reputation. 

    User Experience

    You're not out of the woods even if the website does not go down. Your site will also cost money if it takes too long to load. 

    Slow site speed increases your bounce rate, lowers the number of people who buy something on your site and makes the user experience overall bad. This hurts how people see your brand. 

    People have brief attention spans and need more patience when they are online. If your site doesn't load fast enough, they will go somewhere else, maybe even to one of your rivals. 

    SEO impact 

    As a good advocate for the user experience, Google's ranking algorithm considers your site's key speed metrics. Google says that the number of people who leave a site that took three seconds or more to load will go up by 32% compared to a site that runs in one second or less. 

    This is why sites that load quickly rank higher than sites that load slowly. Google and other Internet search engines want their users to have the best search experience possible when they use them. If your site doesn't do that, you'll soon see a drop in traffic from search engines.

    What Causes Sluggish Website Performance?

    Many things can make a website or web service fail to work well. File number, file size, system design, and user factors like location, gadget, browser form, OS, and connection speed all affect the end-user experience, whether good or bad. 

    With dynamic, distributed content, speed problems can happen at any time if the site changes, the hardware is broken, or not up to par. Poor performance is often caused by third-party content, but it can be hard to find slow third-party content with no Synthetic Web Performance Monitoring.

    Five Common Factors That Affect the Performance of a Website

    Now, let's look at the most important things that affect your site's work. 

    Size of the page and pictures 

    If everything else is the same, a page with few or no pictures will load faster than one with a lot of them. The more complex the pages are and how long, the longer it takes for a browser to understand and load them. 

    Images, along with other visual aspects, are a big part of your site's brand and how interesting it is to use. The key is to optimise them to ensure they are not bigger than they need to be and to shrink them so that pages load quickly. 

    Keep your web pages as neat as possible so that things don't have to load too slowly. 

    Server and Server Location

    The calibre of the server you use affects how quickly it reacts to requests, how many requests it can handle at once, and how possible it is to go offline because of technical problems. Always spend money on the best service you can for your website. 

    The server's position is also a big part of how well a site works. The closer your server is to the client, the faster calls can go to and from it. That's why you should always consider where your main customers live when deciding where to put your computers. 


    Heavy scripts impede your website in the same way that big images do. They may destroy the whole page without optimisation and cause conflicts. 

    When choosing whether or not to keep a script, you should weigh its business benefits against how long it takes to load and how well it works. 

    CSS and JavaScript

    Web designers use CSS and JavaScript together to decide how a site works and how its interactive parts are shown. This makes sites stand out and unique, yet it can also slow down how fast they run. 

    Every bit of code you add takes more time and space on your server and the user's computer to load and process. JavaScript is especially known for slowing down the speed at which pages run. Find ways to use CSS and JavaScript less on your site, and when you do, make sure they're as optimised and simplified as possible. 

    Third-Party Assets

    If your page needs data from another site, you depend on how well that site works. Even if your site is well-designed, users won't have a good time if they have to wait for a third-party app to load. 

    Evaluate how much you depend on outside resources while ensuring you only work with reputable third parties with a history of doing good work. 

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    Why Is Monitoring Website Performance Important?

    Monitoring a website's performance can help users make sure that their organisation's web services are quick and useful for end users by finding problems, ideally before they affect performance.

    Monitoring speed is also essential, as a website that doesn't work well can hurt a business in real ways. For example, a slow website that doesn't work well can quickly lead to fewer visitors. These slowdowns can lead to lost money and a damaged business.

    How Does a Page Perform Well?

    There are a lot of third-party tools that can measure how well your page works. They may use slightly different metrics and score formulas.  

    Generally, your pages should load as close to a single second as possible. That's a clear goal, but reaching it in real life takes work.  

    Google wants mobile and PC pages to load in under five seconds at the very least. It says that you should try to do it in seconds. 

    To help owners of websites do this, Google has an open-source tracking program called Lighthouse, which demonstrates how well the website is doing based on Google's key performance factors. These things: 

    • Cumulative Layout Shift: How much does everything you can see on the page move? A shift is when something starts in one place and then goes to a different place as the rest of the website loads. This annoys users who want to interact with a part that moves out of place without warning. 
    • Total Blocking Time: How long can a user's clicks, key presses, and swipes not make your page do anything?
    • Largest Contentful Paint: How fast does the biggest piece of information above the fold load? This metric only looks at the first screen a person sees. It doesn't look at what else loads on the page. 
    • Time to Interactive: When can the user connect with the page easily? This measure checks to see if the user can interact with all the interactive parts of the page and if the page responds to these events in less than 50 milliseconds. 
    • Speed Index: How swiftly does the information show up on the page from the user's point of view? 
    • First Contentful Paint: How long does it take for your website's first piece of information to load and show up on the user's browser? 

    The Importance of a Large Synthetic Web Performance Monitoring Checkpoint Network

    Many services and websites have a big problem with latency caused by where the end user is. For a fake answer to be a true indicator of how users feel about a site, the tests must come from a place close to real users. 

    When a site uses a service that offers a big network of checkpoints, it can choose where the checks start. This gives data that better reflects how people use the site and helps find problems specific to a certain area.


    Web Performance Monitoring is an important process that helps directors and network managers understand how a website or service responds to user actions. This information can be used to improve service speed, lower bounce rates, and improve the user experience. Monitoring tools usually check server health, downtime, use of a Content Delivery Network (CDN), and startup times.

    Research has shown that a site only has three seconds to load before 40% of its visitors leave. Businesses should keep an eye on their online assets on a regular basis to keep their brand's image and income stream stable and to keep site users from leaving.

    Bad site speed can have big effects on things like the cost of downtime, how users feel about the site, and how it ranks in search engines. Businesses that lose possible customers or users, because their website is slow, could lose hundreds or thousands of dollars per minute. Google's ranking system can also be hurt by a slow site speed, since 32% more people leave a site that takes three seconds or more to load.

    Slow website performance can be caused by many things, such as the amount of files, the size of each file, the way the system is set up, user factors, and third-party content. Synthetic Web Performance Monitoring can help find and fix these problems, making sure that users have a better, easier time.

    Several things affect how well a website works, such as the size and quality of the page, the server and where it is located, scripts, CSS, JavaScript, and third-party files. A page with few or no pictures will load faster than one with lots of pictures. However, pages that are hard to understand may take longer to load. Images can load faster if they are optimised, and web pages are neat.

    The server and where the server is located also affects how quickly a site responds to requests and how many requests it can handle at once. The location of the server is very important because it affects how quickly calls go to and from the client. Heavy code can make it hard for a website to work and cause problems. To optimise a site, you must use CSS and JavaScript less, make them simpler, and work with trusted third parties.

    It's important to keep an eye on how well a website is doing so that end users can get quick and useful web services and keep business damage from happening. Google's Lighthouse tracking programme helps page owners measure page performance based on key performance factors like cumulative layout shift, total blocking time, biggest contentful paint, time to interact, speed index, and first contentful paint.

    A big network of synthetic web performance monitoring checkpoints is needed to solve latency problems and get data that better reflects how users act on the web. By using a service with a large network of stops, websites can learn more about how users act and determine their problems.

    Content Summary

    • Web Performance Monitoring helps in assessing the speed and reliability of a website or service.
    • Monitoring provides valuable data to enhance the website’s performance.
    • The end goal is to improve user satisfaction and reduce bounce rates.
    • Website administrators can make data-driven changes to optimise the site.
    • Monitoring tools offer insights into internet lag and network hop issues.
    • These tools convert raw data into understandable reports and graphs.
    • Metrics like server health, downtime, and use of CDN are commonly monitored.
    • Consistent monitoring is preferable to periodic checks for a more accurate assessment.
    • Monitoring tools alert administrators when the site goes offline unexpectedly.
    • Studies show websites lose 40% of viewers if the load time exceeds three seconds.
    • Google research indicates that even a minute's delay can deter 20% of users.
    • Performance monitoring is essential to maintain brand image and revenue streams.
    • Downtime can result in missing potential customers and diminishing current ones.
    • E-commerce sites could lose substantial amounts of money for every minute they are down.
    • Efficient monitoring tools allow rapid response to downtime, reducing financial loss.
    • Slow website speed can increase the bounce rate and decrease conversions.
    • Poor speed negatively impacts the user experience and brand perception.
    • Brief attention spans online mean users quickly leave slow-loading sites.
    • Google's algorithm considers website speed, affecting search rankings.
    • A site that takes three seconds or longer to load will have a 32% increase in bounce rate.
    • Website performance can be influenced by numerous factors, including file size and system design.
    • Poor performance can also result from third-party content.
    • Page size and picture quantity significantly affect loading time.
    • Visual elements should be optimised for quick loading without compromising quality.
    • Server quality and location play a crucial role in website performance.
    • Proximity to the server can impact the speed of data transmission.
    • Heavy scripts can be detrimental to website speed.
    • All scripts should be optimised and their necessity evaluated.
    • Web designers use CSS and JavaScript to enhance site functionality, but this can slow down load times.
    • Excessive code can strain server and user resources.
    • Third-party assets can also affect website performance.
    • Dependency on unreliable third-party resources can harm the user experience.
    • Performance monitoring identifies issues before they can affect user experience.
    • A poorly performing website can result in a loss of visitors and revenue.
    • Various third-party tools offer metrics to assess website performance.
    • Google suggests pages should ideally load within a single second.
    • Google’s Lighthouse tool offers a performance assessment based on key factors.
    • Cumulative Layout Shift measures visual stability during loading.
    • Total Blocking Time assesses delays in user interactions.
    • The largest Contentful Paint evaluates the speed of primary content loading.
    • Time to Interactive measures how quickly a user can interact with the page.
    • Speed Index shows how quickly content is visually displayed.
    • First Contentful Paint measures the time for the first piece of content to appear.
    • Synthetic Web Performance Monitoring can simulate user experiences from different locations.
    • A large checkpoint network is crucial for accurate global performance testing.
    • Checkpoint locations should ideally be close to real users for more relevant data.
    • Latency issues can be specific to certain geographical areas.
    • Monitoring helps in resource allocation to optimise website performance.
    • Real-time alerts enable immediate action, safeguarding the business's reputation.
    • Ultimately, monitoring aims to provide a quick, reliable, and user-friendly website experience.

    Frequently Asked Questions

    The speed of a website or service is checked by performance tracking. Performance monitors keep track of the time it takes for frontend and backend connections to be made and for browsers to run. Synthetic Monitoring or RUM technology can be used in performance tools. The most complete performance statistics are from RUM and the Full Page Check.


    Observability tools, APM, tracking systems, warning and dashboard systems, and more are all examples of performance monitoring systems.


    A performance monitoring plan (PMP) is a tool that USAID operating units use to plan and handle performance data collection. Plans for data processing, reporting, and use are sometimes also part of the plan. PMPs are needed but only for use by the operating unit.


    Organisations can't afford to have a website that is slow or doesn't work well because it irritates end users, slows down their digital buying trip, and hurts the bottom line. For a better experience for end users, organisations need to make sure that their web pages are reliable and open.


    Analytics-based monitoring is a must if you want to know how your website is doing. It also helps you keep track of key data. The bounce rate is the number of people who visit a website and leave without doing anything. Average session length is how long a person stays on your site.

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