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89
nfl.com
Last Updated: 4 months
Success
78% of passed verification steps
Warning
7% of total warning
Errors
15% of total errors, require fast action
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Desktop
Mobile
Performance
Desktop Score 44%
Best Practices
Desktop Score 83%
SEO
Desktop Score 92%
PWA
Desktop Score 50%
Performance
Mobile Score 3%
Best Practices
Mobile Score 95%
SEO
Mobile Score 92%
PWA
Mobile Score 50%
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Social Data
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Estimation Traffic and Earnings
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Desktop
Initial server response time was short
Root document took 20 ms
Keep the server response time for the main document short because all other requests depend on it
Network Round Trip Times
130 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Efficiently encode images
Potential savings of 1,099 KiB
Optimized images load faster and consume less cellular data
First Meaningful Paint
1.1 s
First Meaningful Paint measures when the primary content of a page is visible
Remove duplicate modules in JavaScript bundles
Potential savings of 27 KiB
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers
Potential savings of 87 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers
Reduce the impact of third-party code
Third-party code blocked the main thread for 400 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Enable text compression
Potential savings of 11 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Minimize main-thread work
6.8 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Avoid non-composited animations
4 animated elements found
Animations which are not composited can be janky and increase CLS
Defer offscreen images
Potential savings of 1,695 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Time to Interactive
7.8 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Speed Index
3.0 s
Speed Index shows how quickly the contents of a page are visibly populated
Max Potential First Input Delay
290 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Keep request counts low and transfer sizes small
291 requests • 6,239 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Avoid enormous network payloads
Total size was 6,239 KiB
Large network payloads cost users real money and are highly correlated with long load times
Serve static assets with an efficient cache policy
95 resources found
A long cache lifetime can speed up repeat visits to your page
Largest Contentful Paint element
1,960 ms
This is the largest contentful element painted within the viewport
Reduce unused CSS
Potential savings of 95 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity
Uses deprecated APIs
1 warning found
Deprecated APIs will eventually be removed from the browser
Avoid large layout shifts
5 elements found
These DOM elements contribute most to the CLS of the page
First Contentful Paint
1.1 s
First Contentful Paint marks the time at which the first text or image is painted
Properly size images
Potential savings of 31 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
Serve images in next-gen formats
Potential savings of 1,435 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Reduce unused JavaScript
Potential savings of 1,328 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Cumulative Layout Shift
0.248
Cumulative Layout Shift measures the movement of visible elements within the viewport
Eliminate render-blocking resources
Potential savings of 390 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Avoid long main-thread tasks
20 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Total Blocking Time
680 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Largest Contentful Paint
2.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Reduce JavaScript execution time
3.8 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Server Backend Latencies
430 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Avoid an excessive DOM size
3,178 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
Links do not have descriptive text
1 link found
Descriptive link text helps search engines understand your content
Avoid chaining critical requests
5 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Minify JavaScript
Potential savings of 12 KiB
Minifying JavaScript files can reduce payload sizes and script parse time
Mobile
First Contentful Paint
5.8 s
First Contentful Paint marks the time at which the first text or image is painted
Minimize main-thread work
21.3 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Properly size images
Potential savings of 4,863 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
Max Potential First Input Delay
1,000 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Eliminate render-blocking resources
Potential savings of 2,720 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Reduce the impact of third-party code
Third-party code blocked the main thread for 3,720 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Minify JavaScript
Potential savings of 7 KiB
Minifying JavaScript files can reduce payload sizes and script parse time
Document uses legible font sizes
84.62% legible text
Font sizes less than 12px are too small to be legible and require mobile visitors to “pinch to zoom” in order to read. Strive to have >60% of page text ≥12px
Enable text compression
Potential savings of 6 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Server Backend Latencies
230 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Reduce unused JavaScript
Potential savings of 1,249 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Network Round Trip Times
120 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Links do not have descriptive text
1 link found
Descriptive link text helps search engines understand your content
Avoid chaining critical requests
6 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Reduce JavaScript execution time
11.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Avoid non-composited animations
5 animated elements found
Animations which are not composited can be janky and increase CLS
Avoid large layout shifts
4 elements found
These DOM elements contribute most to the CLS of the page
Total Blocking Time
4,070 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Efficiently encode images
Potential savings of 2,989 KiB
Optimized images load faster and consume less cellular data
Remove duplicate modules in JavaScript bundles
Potential savings of 27 KiB
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Cumulative Layout Shift
0.687
Cumulative Layout Shift measures the movement of visible elements within the viewport
Serve images in next-gen formats
Potential savings of 3,838 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Reduce unused CSS
Potential savings of 150 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity
Serve static assets with an efficient cache policy
144 resources found
A long cache lifetime can speed up repeat visits to your page
Avoid an excessive DOM size
3,824 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
Avoid serving legacy JavaScript to modern browsers
Potential savings of 47 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers
First Meaningful Paint
5.8 s
First Meaningful Paint measures when the primary content of a page is visible
Time to Interactive
37.8 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Avoid enormous network payloads
Total size was 10,460 KiB
Large network payloads cost users real money and are highly correlated with long load times
Tap targets are not sized appropriately
97% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), or have enough space around them, to be easy enough to tap without overlapping onto other elements
Defer offscreen images
Potential savings of 331 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Initial server response time was short
Root document took 20 ms
Keep the server response time for the main document short because all other requests depend on it
Largest Contentful Paint
9.3 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Speed Index
15.9 s
Speed Index shows how quickly the contents of a page are visibly populated
Avoid long main-thread tasks
20 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Speed And Optimization Tips
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Alexa Rank
99,999,999
Global Rank
99,999,999
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