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WebPageTest and
SPEEDCURVE | PERFORMANCE TESTING IN CI: LET'S BREAK THE BUILD! SpeedCurve recently released an official CLI and Node.js API that simplifies running performance tests as part of a CI/CD pipeline. I'll put some example commands below to give you an idea of how it can be used. Option 1: Break the build on performance regressions. Runs performance tests and waits until they finish. SPEEDCURVE | NEW: LIGHTHOUSE V6 SUPPORT! NEW: Lighthouse v6 support! WEDNESDAY 1ST OF JULY 2020. Lighthouse v6 has arrived! The much-anticipated update to Lighthouse is now available to SpeedCurvers as part of our latest test agent updates.Keep reading to find out what this means and how it may affect your performance metrics. SPEEDCURVE | THE AVERAGE WEB PAGE IS 3MB. HOW MUCH SHOULD Assuming a roughly 16% year-over-year increase in page size, the average page could exceed 4MB in just over two years. But again, going back to Ilya's point, this is just an average. 4MB pages are already here. According to the HTTP Archive, almost 16% of pages today – in other words, about 1 out of 6 pages – are 4 MB or greater in size. SPEEDCURVE | I'VE JOINED SPEEDCURVE! HERE'S WHY Saying yes to working with Mark and Steve was a no-brainer, of course. Here's why I'm excited not just about working with these guys, but also about working at SpeedCurve. I spent the past two decades studying how people use the web. As already mentioned, for the past eight years I focused on how web performance intersects with userexperience
WHEN SHOULD I USE AVERAGE, MEDIAN, AND OTHER PERCENTILES When to use the 75th percentile. The 75th percentile is a good balance of representing the vast majority of measurements, and not being impacted by outliers. While not as stable as the median, the 75th percentile is a good choice for seeing medium- to long-term trends. We also think the 75th percentile is the best value to use when setting LIGHTHOUSE SCORES AND AUDITS Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. You can run Lighthouse within Chrome DevTools, from the command line, and as a Node module. But there's no need to do any of those if you TESTING PAGES THAT REQUIRE AUTHENTICATION WebPageTest scripting. Below are some example scripts that authenticate the browser session in different ways. They have been annotated with comments to explain what each step is doing, and you can find more information about scripting in the WebPagetest scripting documentation.. Important: WebPagetest scripts are tab-delimited.When pasting the example scripts into the script editor, take HOW IS SPEED INDEX CALCULATED? Speed Index is based on measuring when visual content (e.g., images and video) renders within the viewport. Speed Index evaluates the percentage of visual completion of a page at every point in time. It does this by looking at a filmstrip view of your page rendering, analyzing it on a frame-by-frame basis, and looking for changes in thecolour
SPEEDCURVE: MONITOR FRONT-END PERFORMANCEPRODUCTSPRICINGCUSTOMERSABOUTBLOGBENCHMARKS “SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. It gives you insights, points what the main performance issues are and even ranks your site against your competitors. SPEEDCURVE | PRICING Annual 20% Off. Choose any number of LUX page views or Synthetic checks you like, starting from $15/month. SpeedCurve LUX collects page views, showing you how real users experience your site. SpeedCurve Synthetic monitoring is built on top of WebPageTest and Google Lighthouse. SpeedCurve Synthetic monitoring is built on top ofWebPageTest and
SPEEDCURVE | PERFORMANCE TESTING IN CI: LET'S BREAK THE BUILD! SpeedCurve recently released an official CLI and Node.js API that simplifies running performance tests as part of a CI/CD pipeline. I'll put some example commands below to give you an idea of how it can be used. Option 1: Break the build on performance regressions. Runs performance tests and waits until they finish. SPEEDCURVE | NEW: LIGHTHOUSE V6 SUPPORT! NEW: Lighthouse v6 support! WEDNESDAY 1ST OF JULY 2020. Lighthouse v6 has arrived! The much-anticipated update to Lighthouse is now available to SpeedCurvers as part of our latest test agent updates.Keep reading to find out what this means and how it may affect your performance metrics. SPEEDCURVE | THE AVERAGE WEB PAGE IS 3MB. HOW MUCH SHOULD Assuming a roughly 16% year-over-year increase in page size, the average page could exceed 4MB in just over two years. But again, going back to Ilya's point, this is just an average. 4MB pages are already here. According to the HTTP Archive, almost 16% of pages today – in other words, about 1 out of 6 pages – are 4 MB or greater in size. SPEEDCURVE | I'VE JOINED SPEEDCURVE! HERE'S WHY Saying yes to working with Mark and Steve was a no-brainer, of course. Here's why I'm excited not just about working with these guys, but also about working at SpeedCurve. I spent the past two decades studying how people use the web. As already mentioned, for the past eight years I focused on how web performance intersects with userexperience
WHEN SHOULD I USE AVERAGE, MEDIAN, AND OTHER PERCENTILES When to use the 75th percentile. The 75th percentile is a good balance of representing the vast majority of measurements, and not being impacted by outliers. While not as stable as the median, the 75th percentile is a good choice for seeing medium- to long-term trends. We also think the 75th percentile is the best value to use when setting LIGHTHOUSE SCORES AND AUDITS Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. You can run Lighthouse within Chrome DevTools, from the command line, and as a Node module. But there's no need to do any of those if you TESTING PAGES THAT REQUIRE AUTHENTICATION WebPageTest scripting. Below are some example scripts that authenticate the browser session in different ways. They have been annotated with comments to explain what each step is doing, and you can find more information about scripting in the WebPagetest scripting documentation.. Important: WebPagetest scripts are tab-delimited.When pasting the example scripts into the script editor, take HOW IS SPEED INDEX CALCULATED? Speed Index is based on measuring when visual content (e.g., images and video) renders within the viewport. Speed Index evaluates the percentage of visual completion of a page at every point in time. It does this by looking at a filmstrip view of your page rendering, analyzing it on a frame-by-frame basis, and looking for changes in thecolour
SPEEDCURVE | ABOUT
Steve Souders. Steve is a pioneer in the world of web performance. Before SpeedCurve, he held positions as Chief Performance Yahoo!, Google's Head Performance Engineer, and Chief Performance Officer at Fastly.Steve "wrote the book" on web performance with High Performance Web Sites, and its follow-up Even Faster Web Sites.He is the creator of many performance tools and services including YSlow SPEEDCURVE | CUSTOMERS Addy Osmani - Google Chrome. “ We used SpeedCurve to track the performance of the new Guardian responsive site which now loads four times faster and is one of the fastest news sites in the US. Patrick Hamann - The Guardian. “ SpeedCurve has been an indispensable tool in our pursuit of a faster, more elegant UX. PAGE SPEED BENCHMARKS Page Speed Benchmarks. Page speed has a huge impact on user experience. Faster sites have been proven to have lower bounce rates, higher conversion rates, bigger shopping cart sizes, and happier users. In these dashboards, we rank industry-leading websites based on how fast their pages appear to load, from a user’s perspective. SPEEDCURVE | SYNTHETIC: WEBPAGETEST SpeedCurve synthetic monitoring is built on top of WebPageTest, which is widely considered to be the best synthetic performance testing tool available. While WebPageTest is great for running one-off tests, it doesn’t support testing multiple sites on a continuous basis. WebPageTest also doesn’t support tracking and analyzing separateresults.
SPEEDCURVE | NEW: LIGHTHOUSE V6 SUPPORT! NEW: Lighthouse v6 support! WEDNESDAY 1ST OF JULY 2020. Lighthouse v6 has arrived! The much-anticipated update to Lighthouse is now available to SpeedCurvers as part of our latest test agent updates.Keep reading to find out what this means and how it may affect your performance metrics. SPEEDCURVE | AN OPINIONATED GUIDE TO PERFORMANCE BUDGETS A performance budget is a threshold that you apply to the metrics you care about the most. You can then configure your monitoring tools to send you alerts – or even break the build, if you're testing in your staging environment – when your budgets are violated. Understanding the basic premise of performance budgets is pretty easy. TESTING PAGES THAT REQUIRE AUTHENTICATION WebPageTest scripting. Below are some example scripts that authenticate the browser session in different ways. They have been annotated with comments to explain what each step is doing, and you can find more information about scripting in the WebPagetest scripting documentation.. Important: WebPagetest scripts are tab-delimited.When pasting the example scripts into the script editor, take GET STARTED WITH SYNTHETIC MONITORING We created this step-by-step guide to help you set up your SpeedCurve Synthetic monitoring, and to help you onboard your team members who are new to SpeedCurve.As always, we welcome your feedback. If you have any questions that aren't answered here, send us a note at support@speedcurve.com.. If you haven't signed up for SpeedCurve yet, you'll need to do that first. WHAT DO THE DIFFERENT SPEEDCURVE METRICS REPRESENT performance.measure records the delta between two marks. There are other User Timing APIs, but mark and measure are the main functions. SpeedCurve supports custom metrics, so once you've added marks and measures on your pages, you can collect data with both SpeedCurve LUX (RUM) and Synthetic. Since some browsers still do not supportperformance
HOW IS SPEED INDEX CALCULATED? Speed Index is based on measuring when visual content (e.g., images and video) renders within the viewport. Speed Index evaluates the percentage of visual completion of a page at every point in time. It does this by looking at a filmstrip view of your page rendering, analyzing it on a frame-by-frame basis, and looking for changes in thecolour
SPEEDCURVE: MONITOR FRONT-END PERFORMANCEPRODUCTSPRICINGCUSTOMERSABOUTBLOGBENCHMARKS “SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. It gives you insights, points what the main performance issues are and even ranks your site against your competitors. SPEEDCURVE | PRICING Annual 20% Off. Choose any number of LUX page views or Synthetic checks you like, starting from $15/month. SpeedCurve LUX collects page views, showing you how real users experience your site. SpeedCurve Synthetic monitoring is built on top of WebPageTest and Google Lighthouse. SpeedCurve Synthetic monitoring is built on top ofWebPageTest and
PAGE SPEED BENCHMARKS Page Speed Benchmarks. Page speed has a huge impact on user experience. Faster sites have been proven to have lower bounce rates, higher conversion rates, bigger shopping cart sizes, and happier users. In these dashboards, we rank industry-leading websites based on how fast their pages appear to load, from a user’s perspective. SPEEDCURVE | SYNTHETIC: WEBPAGETEST SpeedCurve synthetic monitoring is built on top of WebPageTest, which is widely considered to be the best synthetic performance testing tool available. While WebPageTest is great for running one-off tests, it doesn’t support testing multiple sites on a continuous basis. WebPageTest also doesn’t support tracking and analyzing separateresults.
SPEEDCURVE | THE AVERAGE WEB PAGE IS 3MB. HOW MUCH SHOULD Assuming a roughly 16% year-over-year increase in page size, the average page could exceed 4MB in just over two years. But again, going back to Ilya's point, this is just an average. 4MB pages are already here. According to the HTTP Archive, almost 16% of pages today – in other words, about 1 out of 6 pages – are 4 MB or greater in size. SPEEDCURVE | AN OPINIONATED GUIDE TO PERFORMANCE BUDGETS A performance budget is a threshold that you apply to the metrics you care about the most. You can then configure your monitoring tools to send you alerts – or even break the build, if you're testing in your staging environment – when your budgets are violated. Understanding the basic premise of performance budgets is pretty easy. WHEN SHOULD I USE AVERAGE, MEDIAN, AND OTHER PERCENTILES When to use the 75th percentile. The 75th percentile is a good balance of representing the vast majority of measurements, and not being impacted by outliers. While not as stable as the median, the 75th percentile is a good choice for seeing medium- to long-term trends. We also think the 75th percentile is the best value to use when setting LIGHTHOUSE SCORES AND AUDITS Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. You can run Lighthouse within Chrome DevTools, from the command line, and as a Node module. But there's no need to do any of those if you HOW TO TEST PAGES THAT ARE PART OF USER FLOWS You can use SpeedCurve to test pages that are part of a complex user flow, for example going through the checkout process of an e-commercesite.
PAGE LOAD TIME POSTS ON THE SPEED MATTERS BLOG User Timing and custom metrics. If you want to improve performance, you must start by measuring performance. But what should you measure? Across the performance industry, the metric that's used the most is "page load time" (i.e, "window.onload" or "document complete"). SPEEDCURVE: MONITOR FRONT-END PERFORMANCEPRODUCTSPRICINGCUSTOMERSABOUTBLOGBENCHMARKS “SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. It gives you insights, points what the main performance issues are and even ranks your site against your competitors. SPEEDCURVE | PRICING Annual 20% Off. Choose any number of LUX page views or Synthetic checks you like, starting from $15/month. SpeedCurve LUX collects page views, showing you how real users experience your site. SpeedCurve Synthetic monitoring is built on top of WebPageTest and Google Lighthouse. SpeedCurve Synthetic monitoring is built on top ofWebPageTest and
PAGE SPEED BENCHMARKS Page Speed Benchmarks. Page speed has a huge impact on user experience. Faster sites have been proven to have lower bounce rates, higher conversion rates, bigger shopping cart sizes, and happier users. In these dashboards, we rank industry-leading websites based on how fast their pages appear to load, from a user’s perspective. SPEEDCURVE | SYNTHETIC: WEBPAGETEST SpeedCurve synthetic monitoring is built on top of WebPageTest, which is widely considered to be the best synthetic performance testing tool available. While WebPageTest is great for running one-off tests, it doesn’t support testing multiple sites on a continuous basis. WebPageTest also doesn’t support tracking and analyzing separateresults.
SPEEDCURVE | THE AVERAGE WEB PAGE IS 3MB. HOW MUCH SHOULD Assuming a roughly 16% year-over-year increase in page size, the average page could exceed 4MB in just over two years. But again, going back to Ilya's point, this is just an average. 4MB pages are already here. According to the HTTP Archive, almost 16% of pages today – in other words, about 1 out of 6 pages – are 4 MB or greater in size. SPEEDCURVE | AN OPINIONATED GUIDE TO PERFORMANCE BUDGETS A performance budget is a threshold that you apply to the metrics you care about the most. You can then configure your monitoring tools to send you alerts – or even break the build, if you're testing in your staging environment – when your budgets are violated. Understanding the basic premise of performance budgets is pretty easy. WHEN SHOULD I USE AVERAGE, MEDIAN, AND OTHER PERCENTILES When to use the 75th percentile. The 75th percentile is a good balance of representing the vast majority of measurements, and not being impacted by outliers. While not as stable as the median, the 75th percentile is a good choice for seeing medium- to long-term trends. We also think the 75th percentile is the best value to use when setting LIGHTHOUSE SCORES AND AUDITS Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. You can run Lighthouse within Chrome DevTools, from the command line, and as a Node module. But there's no need to do any of those if you HOW TO TEST PAGES THAT ARE PART OF USER FLOWS You can use SpeedCurve to test pages that are part of a complex user flow, for example going through the checkout process of an e-commercesite.
PAGE LOAD TIME POSTS ON THE SPEED MATTERS BLOG User Timing and custom metrics. If you want to improve performance, you must start by measuring performance. But what should you measure? Across the performance industry, the metric that's used the most is "page load time" (i.e, "window.onload" or "document complete"). PAGE SPEED BENCHMARKS Page Speed Benchmarks. Page speed has a huge impact on user experience. Faster sites have been proven to have lower bounce rates, higher conversion rates, bigger shopping cart sizes, and happier users. In these dashboards, we rank industry-leading websites based on how fast their pages appear to load, from a user’s perspective. SPEEDCURVE: MONITOR FRONT-END PERFORMANCE Monitor the front-end performance and build of your website. Compare yourself to others and beat the competition. Start a 30 day free trialnow!
SPEEDCURVE | ABOUT
Steve Souders. Steve is a pioneer in the world of web performance. Before SpeedCurve, he held positions as Chief Performance Yahoo!, Google's Head Performance Engineer, and Chief Performance Officer at Fastly.Steve "wrote the book" on web performance with High Performance Web Sites, and its follow-up Even Faster Web Sites.He is the creator of many performance tools and services including YSlow SPEEDCURVE | CUSTOMERS Cato Johnston - Digital Arts Network. “ SpeedCurve is visually awesome and holds functionality I've been expecting someone to finally build for quite a while. Guy Podjarny - Web Performance and Security geek. “ @SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. CONTACT | SPEEDCURVE Want to try SpeedCurve for free? Setup a SpeedCurve 30 day free trial. Got a question? Take a look at our SpeedCurve Support Articles. Found a bug? Submit an issue in Github. Want help understanding your website's data and improving performance?SPEED MATTERS BLOG
Cumulative Layout Shift: What it measures, when it works (and doesn't), and how to use it. Back in May, we shared that SpeedCurve supports Google's Core Web Vitals in both our synthetic monitoring and LUX real user monitoring tools. Two of the Web Vitals – Largest Contentful Paint (LCP) and First Input Delay (FID) – were actually available in SpeedCurve for quite a while prior to theSPEEDCURVE SUPPORT
Get the most out of SpeedCurve. Pro tips and tutorials to help you take advantage of all the unique features SpeedCurve has to offer. +2. 28 articles in this collection. Written by Cliff Crocker, Tammy Everts, Joseph Wynn and 2 others. SPEEDCURVE | AN OPINIONATED GUIDE TO PERFORMANCE BUDGETS A performance budget is a threshold that you apply to the metrics you care about the most. You can then configure your monitoring tools to send you alerts – or even break the build, if you're testing in your staging environment – when your budgets are violated. Understanding the basic premise of performance budgets is pretty easy. HOW IS SPEED INDEX CALCULATED? Speed Index is based on measuring when visual content (e.g., images and video) renders within the viewport. Speed Index evaluates the percentage of visual completion of a page at every point in time. It does this by looking at a filmstrip view of your page rendering, analyzing it on a frame-by-frame basis, and looking for changes in thecolour
SPEEDCURVE STATUS
Uptime over the past 60 days. View historical uptime. No downtime recorded on this day. No data exists for this day. had a major outage. had a partial outage. No SPEEDCURVE: MONITOR FRONT-END PERFORMANCE SpeedCurve synthetic monitoring is built on top of WebPageTest (the best synthetic web performance testing tool available). With synthetic monitoring, you can test how fast your pages render on different browsers and devices in locations around the world. You can track dozens of web performance metrics – and create budgets and getalerts when
SPEEDCURVE | PRICING Annual 20% Off. Choose any number of LUX page views or Synthetic checks you like, starting from $15/month. SpeedCurve LUX collects page views, showing you how real users experience your site. SpeedCurve Synthetic monitoring is built on top of WebPageTest and Google Lighthouse. SpeedCurve Synthetic monitoring is built on top ofWebPageTest and
SPEEDCURVE | CUSTOMERS Cato Johnston - Digital Arts Network. “ SpeedCurve is visually awesome and holds functionality I've been expecting someone to finally build for quite a while. Guy Podjarny - Web Performance and Security geek. “ @SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. SPEEDCURVE | VISUALIZING LAYOUT SHIFTS Visualizing Layout Shifts. WEDNESDAY 21ST OF OCTOBER 2020. One of the big challenges with Google's new Cumulative Layout Shift (CLS) metric is understanding which elements actually moved on the page, when they moved, and by how much. To help with debugging your CLS scores, we've added a new visualization to SpeedCurve that shows each layout shift and how each individual shift adds up to the WHEN SHOULD I USE AVERAGE, MEDIAN, AND OTHER PERCENTILES When to use the 75th percentile. The 75th percentile is a good balance of representing the vast majority of measurements, and not being impacted by outliers. While not as stable as the median, the 75th percentile is a good choice for seeing medium- to long-term trends. We also think the 75th percentile is the best value to use when setting LIGHTHOUSE SCORES AND AUDITS Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. You can run Lighthouse within Chrome DevTools, from the command line, and as a Node module. But there's no need to do any of those if you SPEEDCURVE | THE AVERAGE WEB PAGE IS 3MB. HOW MUCH SHOULD Assuming a roughly 16% year-over-year increase in page size, the average page could exceed 4MB in just over two years. But again, going back to Ilya's point, this is just an average. 4MB pages are already here. According to the HTTP Archive, almost 16% of pages today – in other words, about 1 out of 6 pages – are 4 MB or greater in size.SPEEDCURVE STATUS
Uptime over the past 60 days. View historical uptime. No downtime recorded on this day. No data exists for this day. had a major outage. had a partial outage. No WHAT DO THE DIFFERENT SPEEDCURVE METRICS REPRESENT performance.measure records the delta between two marks. There are other User Timing APIs, but mark and measure are the main functions. SpeedCurve supports custom metrics, so once you've added marks and measures on your pages, you can collect data with both SpeedCurve LUX (RUM) and Synthetic. Since some browsers still do not supportperformance
PAGE LOAD TIME POSTS ON THE SPEED MATTERS BLOG User Timing and custom metrics. If you want to improve performance, you must start by measuring performance. But what should you measure? Across the performance industry, the metric that's used the most is "page load time" (i.e, "window.onload" or "document complete"). SPEEDCURVE: MONITOR FRONT-END PERFORMANCE SpeedCurve synthetic monitoring is built on top of WebPageTest (the best synthetic web performance testing tool available). With synthetic monitoring, you can test how fast your pages render on different browsers and devices in locations around the world. You can track dozens of web performance metrics – and create budgets and getalerts when
SPEEDCURVE | PRICING Annual 20% Off. Choose any number of LUX page views or Synthetic checks you like, starting from $15/month. SpeedCurve LUX collects page views, showing you how real users experience your site. SpeedCurve Synthetic monitoring is built on top of WebPageTest and Google Lighthouse. SpeedCurve Synthetic monitoring is built on top ofWebPageTest and
SPEEDCURVE | CUSTOMERS Cato Johnston - Digital Arts Network. “ SpeedCurve is visually awesome and holds functionality I've been expecting someone to finally build for quite a while. Guy Podjarny - Web Performance and Security geek. “ @SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. SPEEDCURVE | VISUALIZING LAYOUT SHIFTS Visualizing Layout Shifts. WEDNESDAY 21ST OF OCTOBER 2020. One of the big challenges with Google's new Cumulative Layout Shift (CLS) metric is understanding which elements actually moved on the page, when they moved, and by how much. To help with debugging your CLS scores, we've added a new visualization to SpeedCurve that shows each layout shift and how each individual shift adds up to the WHEN SHOULD I USE AVERAGE, MEDIAN, AND OTHER PERCENTILES When to use the 75th percentile. The 75th percentile is a good balance of representing the vast majority of measurements, and not being impacted by outliers. While not as stable as the median, the 75th percentile is a good choice for seeing medium- to long-term trends. We also think the 75th percentile is the best value to use when setting LIGHTHOUSE SCORES AND AUDITS Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. You can run Lighthouse within Chrome DevTools, from the command line, and as a Node module. But there's no need to do any of those if you SPEEDCURVE | THE AVERAGE WEB PAGE IS 3MB. HOW MUCH SHOULD Assuming a roughly 16% year-over-year increase in page size, the average page could exceed 4MB in just over two years. But again, going back to Ilya's point, this is just an average. 4MB pages are already here. According to the HTTP Archive, almost 16% of pages today – in other words, about 1 out of 6 pages – are 4 MB or greater in size.SPEEDCURVE STATUS
Uptime over the past 60 days. View historical uptime. No downtime recorded on this day. No data exists for this day. had a major outage. had a partial outage. No WHAT DO THE DIFFERENT SPEEDCURVE METRICS REPRESENT performance.measure records the delta between two marks. There are other User Timing APIs, but mark and measure are the main functions. SpeedCurve supports custom metrics, so once you've added marks and measures on your pages, you can collect data with both SpeedCurve LUX (RUM) and Synthetic. Since some browsers still do not supportperformance
PAGE LOAD TIME POSTS ON THE SPEED MATTERS BLOG User Timing and custom metrics. If you want to improve performance, you must start by measuring performance. But what should you measure? Across the performance industry, the metric that's used the most is "page load time" (i.e, "window.onload" or "document complete").SPEEDCURVE | ABOUT
Steve Souders. Steve is a pioneer in the world of web performance. Before SpeedCurve, he held positions as Chief Performance Yahoo!, Google's Head Performance Engineer, and Chief Performance Officer at Fastly.Steve "wrote the book" on web performance with High Performance Web Sites, and its follow-up Even Faster Web Sites.He is the creator of many performance tools and services including YSlow FREE TRIAL | SPEEDCURVE Start your free trial. To kick off your free 30-day trial, start by letting us know the URL of your homepage. “ Couldn't have made the progress we did without @SpeedCurve great product! Ian Carrico - Vox Media. “ @SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. It gives youinsights
SPEEDCURVE | NEW: LIGHTHOUSE V6 SUPPORT! NEW: Lighthouse v6 support! WEDNESDAY 1ST OF JULY 2020. Lighthouse v6 has arrived! The much-anticipated update to Lighthouse is now available to SpeedCurvers as part of our latest test agent updates.Keep reading to find out what this means and how it may affect your performance metrics. SPEEDCURVE | VISUALIZING LAYOUT SHIFTS Visualizing Layout Shifts. WEDNESDAY 21ST OF OCTOBER 2020. One of the big challenges with Google's new Cumulative Layout Shift (CLS) metric is understanding which elements actually moved on the page, when they moved, and by how much. To help with debugging your CLS scores, we've added a new visualization to SpeedCurve that shows each layout shift and how each individual shift adds up to the GET THE MOST OUT OF SPEEDCURVE Create custom metrics. Both SpeedCurve Synthetic and LUX support custom timers via the User Timing spec. Here's how to get started, including six sample metrics. Written WHAT IS A CHECK AND HOW MANY DO I NEED? The number of checks is based on first combining the number of settings you add: Sites x Templates (URLs) x Regions x Browsers x Test Times x 3 Checks = Total site checks. Every time you use the "Test Now" button or do a deploy using the API we do an extra round of tests on your main site: 1 Main Site x Templates x Regions x Browsers x 3Checks
SPEEDCURVE | PRELOAD SCRIPTS Preload scripts. TUESDAY 22ND OF JANUARY 2019. In my previous post I talked about how loading scripts asynchronously reduces the impact of JavaScript resulting in a (much) faster user experience. But even when scripts are loaded async, the browser may still twiddle its thumbs for a second or more waiting for the first script to arrive. TROUBLESHOOTING LIGHTHOUSE Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. Every time you run a synthetic test in SpeedCurve, your Lighthouse scores appear at the top of your test results page by default. MONITORING JAVASCRIPT PERFORMANCE JavaScript Dashboard. Description: SpeedCurve's JavaScript dashboard is the best place to get an overview of the JavaScript performance for a single page. The JavaScript waterfall chart shows all network requests that execute JavaScript on the main thread. It has a few important components: ADDING WEBPAGETEST SCRIPTS TO URLS Updated over a week ago. You can add WebPagetest scripts to the URLs you test. When you edit a Site in your Settings, there's a script icon next to each URL that allows you to add scripts. With WebPageTest scripts you're able to do all sorts of things like add headers, set cookies, step through a number of pages or perform actions on a page SPEEDCURVE: MONITOR FRONT-END PERFORMANCE SpeedCurve synthetic monitoring is built on top of WebPageTest (the best synthetic web performance testing tool available). With synthetic monitoring, you can test how fast your pages render on different browsers and devices in locations around the world. You can track dozens of web performance metrics – and create budgets and getalerts when
SPEEDCURVE | PRICING Annual 20% Off. Choose any number of LUX page views or Synthetic checks you like, starting from $15/month. SpeedCurve LUX collects page views, showing you how real users experience your site. SpeedCurve Synthetic monitoring is built on top of WebPageTest and Google Lighthouse. SpeedCurve Synthetic monitoring is built on top ofWebPageTest and
SPEEDCURVE | CUSTOMERS Cato Johnston - Digital Arts Network. “ SpeedCurve is visually awesome and holds functionality I've been expecting someone to finally build for quite a while. Guy Podjarny - Web Performance and Security geek. “ @SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. SPEEDCURVE | VISUALIZING LAYOUT SHIFTS Visualizing Layout Shifts. WEDNESDAY 21ST OF OCTOBER 2020. One of the big challenges with Google's new Cumulative Layout Shift (CLS) metric is understanding which elements actually moved on the page, when they moved, and by how much. To help with debugging your CLS scores, we've added a new visualization to SpeedCurve that shows each layout shift and how each individual shift adds up to the WHEN SHOULD I USE AVERAGE, MEDIAN, AND OTHER PERCENTILES When to use the 75th percentile. The 75th percentile is a good balance of representing the vast majority of measurements, and not being impacted by outliers. While not as stable as the median, the 75th percentile is a good choice for seeing medium- to long-term trends. We also think the 75th percentile is the best value to use when setting LIGHTHOUSE SCORES AND AUDITS Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. You can run Lighthouse within Chrome DevTools, from the command line, and as a Node module. But there's no need to do any of those if you SPEEDCURVE | THE AVERAGE WEB PAGE IS 3MB. HOW MUCH SHOULD Assuming a roughly 16% year-over-year increase in page size, the average page could exceed 4MB in just over two years. But again, going back to Ilya's point, this is just an average. 4MB pages are already here. According to the HTTP Archive, almost 16% of pages today – in other words, about 1 out of 6 pages – are 4 MB or greater in size.SPEEDCURVE STATUS
Uptime over the past 60 days. View historical uptime. No downtime recorded on this day. No data exists for this day. had a major outage. had a partial outage. No WHAT DO THE DIFFERENT SPEEDCURVE METRICS REPRESENT performance.measure records the delta between two marks. There are other User Timing APIs, but mark and measure are the main functions. SpeedCurve supports custom metrics, so once you've added marks and measures on your pages, you can collect data with both SpeedCurve LUX (RUM) and Synthetic. Since some browsers still do not supportperformance
PAGE LOAD TIME POSTS ON THE SPEED MATTERS BLOG User Timing and custom metrics. If you want to improve performance, you must start by measuring performance. But what should you measure? Across the performance industry, the metric that's used the most is "page load time" (i.e, "window.onload" or "document complete"). SPEEDCURVE: MONITOR FRONT-END PERFORMANCE SpeedCurve synthetic monitoring is built on top of WebPageTest (the best synthetic web performance testing tool available). With synthetic monitoring, you can test how fast your pages render on different browsers and devices in locations around the world. You can track dozens of web performance metrics – and create budgets and getalerts when
SPEEDCURVE | PRICING Annual 20% Off. Choose any number of LUX page views or Synthetic checks you like, starting from $15/month. SpeedCurve LUX collects page views, showing you how real users experience your site. SpeedCurve Synthetic monitoring is built on top of WebPageTest and Google Lighthouse. SpeedCurve Synthetic monitoring is built on top ofWebPageTest and
SPEEDCURVE | CUSTOMERS Cato Johnston - Digital Arts Network. “ SpeedCurve is visually awesome and holds functionality I've been expecting someone to finally build for quite a while. Guy Podjarny - Web Performance and Security geek. “ @SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. SPEEDCURVE | VISUALIZING LAYOUT SHIFTS Visualizing Layout Shifts. WEDNESDAY 21ST OF OCTOBER 2020. One of the big challenges with Google's new Cumulative Layout Shift (CLS) metric is understanding which elements actually moved on the page, when they moved, and by how much. To help with debugging your CLS scores, we've added a new visualization to SpeedCurve that shows each layout shift and how each individual shift adds up to the WHEN SHOULD I USE AVERAGE, MEDIAN, AND OTHER PERCENTILES When to use the 75th percentile. The 75th percentile is a good balance of representing the vast majority of measurements, and not being impacted by outliers. While not as stable as the median, the 75th percentile is a good choice for seeing medium- to long-term trends. We also think the 75th percentile is the best value to use when setting LIGHTHOUSE SCORES AND AUDITS Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. You can run Lighthouse within Chrome DevTools, from the command line, and as a Node module. But there's no need to do any of those if you SPEEDCURVE | THE AVERAGE WEB PAGE IS 3MB. HOW MUCH SHOULD Assuming a roughly 16% year-over-year increase in page size, the average page could exceed 4MB in just over two years. But again, going back to Ilya's point, this is just an average. 4MB pages are already here. According to the HTTP Archive, almost 16% of pages today – in other words, about 1 out of 6 pages – are 4 MB or greater in size.SPEEDCURVE STATUS
Uptime over the past 60 days. View historical uptime. No downtime recorded on this day. No data exists for this day. had a major outage. had a partial outage. No WHAT DO THE DIFFERENT SPEEDCURVE METRICS REPRESENT performance.measure records the delta between two marks. There are other User Timing APIs, but mark and measure are the main functions. SpeedCurve supports custom metrics, so once you've added marks and measures on your pages, you can collect data with both SpeedCurve LUX (RUM) and Synthetic. Since some browsers still do not supportperformance
PAGE LOAD TIME POSTS ON THE SPEED MATTERS BLOG User Timing and custom metrics. If you want to improve performance, you must start by measuring performance. But what should you measure? Across the performance industry, the metric that's used the most is "page load time" (i.e, "window.onload" or "document complete").SPEEDCURVE | ABOUT
Steve Souders. Steve is a pioneer in the world of web performance. Before SpeedCurve, he held positions as Chief Performance Yahoo!, Google's Head Performance Engineer, and Chief Performance Officer at Fastly.Steve "wrote the book" on web performance with High Performance Web Sites, and its follow-up Even Faster Web Sites.He is the creator of many performance tools and services including YSlow FREE TRIAL | SPEEDCURVE Start your free trial. To kick off your free 30-day trial, start by letting us know the URL of your homepage. “ Couldn't have made the progress we did without @SpeedCurve great product! Ian Carrico - Vox Media. “ @SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. It gives youinsights
SPEEDCURVE | NEW: LIGHTHOUSE V6 SUPPORT! NEW: Lighthouse v6 support! WEDNESDAY 1ST OF JULY 2020. Lighthouse v6 has arrived! The much-anticipated update to Lighthouse is now available to SpeedCurvers as part of our latest test agent updates.Keep reading to find out what this means and how it may affect your performance metrics. SPEEDCURVE | VISUALIZING LAYOUT SHIFTS Visualizing Layout Shifts. WEDNESDAY 21ST OF OCTOBER 2020. One of the big challenges with Google's new Cumulative Layout Shift (CLS) metric is understanding which elements actually moved on the page, when they moved, and by how much. To help with debugging your CLS scores, we've added a new visualization to SpeedCurve that shows each layout shift and how each individual shift adds up to the GET THE MOST OUT OF SPEEDCURVE Create custom metrics. Both SpeedCurve Synthetic and LUX support custom timers via the User Timing spec. Here's how to get started, including six sample metrics. Written WHAT IS A CHECK AND HOW MANY DO I NEED? The number of checks is based on first combining the number of settings you add: Sites x Templates (URLs) x Regions x Browsers x Test Times x 3 Checks = Total site checks. Every time you use the "Test Now" button or do a deploy using the API we do an extra round of tests on your main site: 1 Main Site x Templates x Regions x Browsers x 3Checks
SPEEDCURVE | PRELOAD SCRIPTS Preload scripts. TUESDAY 22ND OF JANUARY 2019. In my previous post I talked about how loading scripts asynchronously reduces the impact of JavaScript resulting in a (much) faster user experience. But even when scripts are loaded async, the browser may still twiddle its thumbs for a second or more waiting for the first script to arrive. TROUBLESHOOTING LIGHTHOUSE Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. Every time you run a synthetic test in SpeedCurve, your Lighthouse scores appear at the top of your test results page by default. MONITORING JAVASCRIPT PERFORMANCE JavaScript Dashboard. Description: SpeedCurve's JavaScript dashboard is the best place to get an overview of the JavaScript performance for a single page. The JavaScript waterfall chart shows all network requests that execute JavaScript on the main thread. It has a few important components: ADDING WEBPAGETEST SCRIPTS TO URLS Updated over a week ago. You can add WebPagetest scripts to the URLs you test. When you edit a Site in your Settings, there's a script icon next to each URL that allows you to add scripts. With WebPageTest scripts you're able to do all sorts of things like add headers, set cookies, step through a number of pages or perform actions on a page SPEEDCURVE: MONITOR FRONT-END PERFORMANCE SpeedCurve synthetic monitoring is built on top of WebPageTest (the best synthetic web performance testing tool available). With synthetic monitoring, you can test how fast your pages render on different browsers and devices in locations around the world. You can track dozens of web performance metrics – and create budgets and getalerts when
SPEEDCURVE | PRICING Annual 20% Off. Choose any number of LUX page views or Synthetic checks you like, starting from $15/month. SpeedCurve LUX collects page views, showing you how real users experience your site. SpeedCurve Synthetic monitoring is built on top of WebPageTest and Google Lighthouse. SpeedCurve Synthetic monitoring is built on top ofWebPageTest and
SPEEDCURVE | ABOUT
Steve Souders. Steve is a pioneer in the world of web performance. Before SpeedCurve, he held positions as Chief Performance Yahoo!, Google's Head Performance Engineer, and Chief Performance Officer at Fastly.Steve "wrote the book" on web performance with High Performance Web Sites, and its follow-up Even Faster Web Sites.He is the creator of many performance tools and services including YSlow SPEEDCURVE | TERMS OF SERVICE AND PRIVACY POLICY 11. 30-day refund. If for any reason you're not happy with your monitoring during the first 30 days of your subscription, we will provide a no-questions-asked full refund. Just email support@speedcurve.com with your account details within the first 30 days and request a refund. WHEN SHOULD I USE AVERAGE, MEDIAN, AND OTHER PERCENTILES When to use the 75th percentile. The 75th percentile is a good balance of representing the vast majority of measurements, and not being impacted by outliers. While not as stable as the median, the 75th percentile is a good choice for seeing medium- to long-term trends. We also think the 75th percentile is the best value to use when setting SPEEDCURVE | THE AVERAGE WEB PAGE IS 3MB. HOW MUCH SHOULD Assuming a roughly 16% year-over-year increase in page size, the average page could exceed 4MB in just over two years. But again, going back to Ilya's point, this is just an average. 4MB pages are already here. According to the HTTP Archive, almost 16% of pages today – in other words, about 1 out of 6 pages – are 4 MB or greater in size. LIGHTHOUSE SCORES AND AUDITS Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. You can run Lighthouse within Chrome DevTools, from the command line, and as a Node module. But there's no need to do any of those if youSPEEDCURVE STATUS
Uptime over the past 60 days. View historical uptime. No downtime recorded on this day. No data exists for this day. had a major outage. had a partial outage. No HOW TO TEST PAGES THAT ARE PART OF USER FLOWS You can use SpeedCurve to test pages that are part of a complex user flow, for example going through the checkout process of an e-commercesite.
PAGE LOAD TIME POSTS ON THE SPEED MATTERS BLOG User Timing and custom metrics. If you want to improve performance, you must start by measuring performance. But what should you measure? Across the performance industry, the metric that's used the most is "page load time" (i.e, "window.onload" or "document complete"). SPEEDCURVE: MONITOR FRONT-END PERFORMANCE SpeedCurve synthetic monitoring is built on top of WebPageTest (the best synthetic web performance testing tool available). With synthetic monitoring, you can test how fast your pages render on different browsers and devices in locations around the world. You can track dozens of web performance metrics – and create budgets and getalerts when
SPEEDCURVE | PRICING Annual 20% Off. Choose any number of LUX page views or Synthetic checks you like, starting from $15/month. SpeedCurve LUX collects page views, showing you how real users experience your site. SpeedCurve Synthetic monitoring is built on top of WebPageTest and Google Lighthouse. SpeedCurve Synthetic monitoring is built on top ofWebPageTest and
SPEEDCURVE | ABOUT
Steve Souders. Steve is a pioneer in the world of web performance. Before SpeedCurve, he held positions as Chief Performance Yahoo!, Google's Head Performance Engineer, and Chief Performance Officer at Fastly.Steve "wrote the book" on web performance with High Performance Web Sites, and its follow-up Even Faster Web Sites.He is the creator of many performance tools and services including YSlow SPEEDCURVE | TERMS OF SERVICE AND PRIVACY POLICY 11. 30-day refund. If for any reason you're not happy with your monitoring during the first 30 days of your subscription, we will provide a no-questions-asked full refund. Just email support@speedcurve.com with your account details within the first 30 days and request a refund. WHEN SHOULD I USE AVERAGE, MEDIAN, AND OTHER PERCENTILES When to use the 75th percentile. The 75th percentile is a good balance of representing the vast majority of measurements, and not being impacted by outliers. While not as stable as the median, the 75th percentile is a good choice for seeing medium- to long-term trends. We also think the 75th percentile is the best value to use when setting SPEEDCURVE | THE AVERAGE WEB PAGE IS 3MB. HOW MUCH SHOULD Assuming a roughly 16% year-over-year increase in page size, the average page could exceed 4MB in just over two years. But again, going back to Ilya's point, this is just an average. 4MB pages are already here. According to the HTTP Archive, almost 16% of pages today – in other words, about 1 out of 6 pages – are 4 MB or greater in size. LIGHTHOUSE SCORES AND AUDITS Lighthouse is an open-source automated tool for auditing the quality of web pages. You can perform Lighthouse tests on any web page, and get a series of scores for performance, accessibility, SEO, and more. You can run Lighthouse within Chrome DevTools, from the command line, and as a Node module. But there's no need to do any of those if youSPEEDCURVE STATUS
Uptime over the past 60 days. View historical uptime. No downtime recorded on this day. No data exists for this day. had a major outage. had a partial outage. No HOW TO TEST PAGES THAT ARE PART OF USER FLOWS You can use SpeedCurve to test pages that are part of a complex user flow, for example going through the checkout process of an e-commercesite.
PAGE LOAD TIME POSTS ON THE SPEED MATTERS BLOG User Timing and custom metrics. If you want to improve performance, you must start by measuring performance. But what should you measure? Across the performance industry, the metric that's used the most is "page load time" (i.e, "window.onload" or "document complete"). SPEEDCURVE | CUSTOMERS Cato Johnston - Digital Arts Network. “ SpeedCurve is visually awesome and holds functionality I've been expecting someone to finally build for quite a while. Guy Podjarny - Web Performance and Security geek. “ @SpeedCurve is the best tool I know for creating and nurturing a culture of performance through monitoring. SPEEDCURVE | SYNTHETIC: WEBPAGETEST SpeedCurve synthetic monitoring is built on top of WebPageTest, which is widely considered to be the best synthetic performance testing tool available. While WebPageTest is great for running one-off tests, it doesn’t support testing multiple sites on a continuous basis. WebPageTest also doesn’t support tracking and analyzing separateresults.
SPEED MATTERS BLOG
One of the huge benefits of tracking web performance over time is the ability to see trends and compare metrics. While you've always had the ability to do this in SpeedCurve, we recently added new functionality that makes it much easier for you to bookmark and compare different Synthetic tests in your test history. SPEEDCURVE | NEW! CHROME BETA AND CANARY SUPPORT & LCP NEW! Chrome Beta and Canary support & LCP element highlighting . THURSDAY 3RD OF JUNE 2021. Phew! Between the fast-paced release cycle for Chrome and the rapid evolution of Core Web Vitals, the month of May has been a busy one here at SpeedCurve. GET THE MOST OUT OF SPEEDCURVE Create custom metrics. Both SpeedCurve Synthetic and LUX support custom timers via the User Timing spec. Here's how to get started, including six sample metrics. Written PAGE SPEED BENCHMARKS Page speed has a huge impact on user experience. Faster sites have been proven to have lower bounce rates, higher conversion rates, bigger shopping cart sizes, and happier users. In these dashboards, we rank industry-leading websites based on how fast their pages appear to load, from a user’s perspective. For each site, click through to see their detailed test results. WHAT DO THE DIFFERENT SPEEDCURVE METRICS REPRESENT performance.measure records the delta between two marks. There are other User Timing APIs, but mark and measure are the main functions. SpeedCurve supports custom metrics, so once you've added marks and measures on your pages, you can collect data with both SpeedCurve LUX (RUM) and Synthetic. Since some browsers still do not supportperformance
SPEEDCURVE STATUS
Uptime over the past 60 days. View historical uptime. No downtime recorded on this day. No data exists for this day. had a major outage. had a partial outage. No WHAT IS A CHECK AND HOW MANY DO I NEED? The number of checks is based on first combining the number of settings you add: Sites x Templates (URLs) x Regions x Browsers x Test Times x 3 Checks = Total site checks. Every time you use the "Test Now" button or do a deploy using the API we do an extra round of tests on your main site: 1 Main Site x Templates x Regions x Browsers x 3Checks
RUNNING SYNTHETIC TESTS WITH CHROME CANARY How to create a custom browser profile that uses Chrome Beta or ChromeCanary to run tests
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SEE HOW REAL PEOPLE EXPERIENCE THE SPEED OF YOUR WEBSITE. Then find (and fix) your web performance problems.START FREE TRIAL
Easy setup • 30-day trial • No credit card required PROUD TO BE TRUSTED BY: “We used SpeedCurve to track the performance of the new Guardian responsive site which now loads four times faster and is one of the fastest news sites in the US. Patrick Hamann - The Guardian “I've been using @SpeedCurve for only about a week, and I'm 100% sold. If you really care about front end #performance, get your boss/company to pay for this tool. Holy crap is it amazing. I'm just glad I can easily graph my #lighthouse scores over time. Tommy Parnell - CarGurus BENCHMARK YOUR SITE AGAINST YOUR COMPETITORS Knowing which of your competitors are faster than you is a fantastic way to get web performance buy-in throughout your organization. Bonus: It's super easy to set up! Extra bonus: You can also generate great visualizations – like side-by-side videos and filmstrips – to share with your team. CORRELATE WEB PERFORMANCE WITH USER EXPERIENCE User engagement chartslet you use your
own data to understand the impact of page slowdowns on your site'sbounce rate.
MEASURE WHEN YOUR MOST IMPORTANT CONTENT RENDERS Not all pixels and page elements are equal. Measure the rendering speed of the content your visitors care about most. Headlines, hero images and any other elements you choose. TRACK THE IMPACT OF WEB PERFORMANCE ON YOUR BUSINESS METRICS How do page slowdowns affect your business? Track any metrics you want – including cart size, A/B tests,and conversion
rate.
TEST CONTINUALLY
Use the SpeedCurve Deploy API as part of your CI/CD process, and track the impact of code changes between deploys. Track pixel level changes to your UX with visual diffs. CREATE PERFORMANCE BUDGETS AND GET ALERTS Performance budgets and alertsare a
vital tool in your web performance toolbox. They take the hassle out of monitoring your pages by notifying you when your most important metrics cross a defined threshold. DEBUG WEB PERFORMANCE ISSUES AT THE PAGE LEVEL Find and fix what matters most. Along with Google's Lighthouse&
PageSpeed Insights
audits,
we'll give you a curated list of performance rules, stacked and color-coded in their order of importance. Tick them off and improve your speed. SEE THE PERFORMANCE IMPACT OF ADS AND THIRD PARTIES The scripts and stylesheets that come with ads, analytics, and social widgets can block the main content on your pages from ever being seen by your users. To help identify this issue, we created third-party waterfall charts to show you where your roadblocks are. COMPARE SYNTHETIC AND RUMÂ DATA Using SpeedCurve Synthetic + RUM together lets you take advantage of your own real user data to build bettersynthetic tests.
__ REAL USER MONITORING SpeedCurve LUX shows you how real users experience your site. In addition to showing you how fast your site is, it also shows you the impact of speed on UX and business metrics – including bounce rate, conversion rate, and session length. LUX helps you discover which design and development improvements will make your site faster, your users happier, and your business more successful. Learn more about LUX __ SYNTHETIC MONITORING SpeedCurve synthetic monitoring is built on top of WebPageTest (the best synthetic web performance testing tool available). With synthetic monitoring, you can test how fast your pages render on different browsers and devices in locations around the world. You can track dozens of web performance metrics – and create budgets and get alerts when they go out of bounds. And you can benchmark yourself against your competitors. Learn more about Synthetic Faster UX. Happier users. What's not to love?START FREE TRIAL
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