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91
twitch.tv
Last Updated: 2 weeks
Success
55% of passed verification steps
Warning
30% of total warning
Errors
15% of total errors, require fast action
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Desktop
Mobile
Performance
Desktop Score 46%
Best Practices
Desktop Score 67%
SEO
Desktop Score 100%
Performance
Mobile Score 25%
Best Practices
Mobile Score 75%
SEO
Mobile Score 100%
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Social Data
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Desktop
Avoid chaining critical requests
16 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
Properly size images
Potential savings of 133 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
Network Round Trip Times
0 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
Largest Contentful Paint element
3,020 ms
This is the largest contentful element painted within the viewport
Serve images in next-gen formats
Potential savings of 130 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Avoid serving legacy JavaScript to modern browsers
Potential savings of 0 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 Contentful Paint
0.6 s
First Contentful Paint marks the time at which the first text or image is painted
Total Blocking Time
1,250 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Avoid an excessive DOM size
1,462 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)
Max Potential First Input Delay
500 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Minimize third-party usage
Third-party code blocked the main thread for 30 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
Reduce unused JavaScript
Potential savings of 718 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
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
Time to Interactive
5.1 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Largest Contentful Paint
3.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Eliminate render-blocking resources
Potential savings of 280 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Reduce JavaScript execution time
4.0 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Avoid enormous network payloads
Total size was 5,158 KiB
Large network payloads cost users real money and are highly correlated with long load times
Avoid long main-thread tasks
15 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Avoid large layout shifts
1 layout shift found
These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to [windowing](https://web.dev/articles/cls#what_is_cls)
Cumulative Layout Shift
0.002
Cumulative Layout Shift measures the movement of visible elements within the viewport
Server Backend Latencies
10 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
User Timing marks and measures
2 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Speed Index
3.3 s
Speed Index shows how quickly the contents of a page are visibly populated
Uses deprecated APIs
2 warnings found
Deprecated APIs will eventually be removed from the browser
Minimize main-thread work
5.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Serve static assets with an efficient cache policy
36 resources found
A long cache lifetime can speed up repeat visits to your page
Mobile
Uses deprecated APIs
1 warning found
Deprecated APIs will eventually be removed from the browser
Minimize main-thread work
24.6 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Time to Interactive
20.3 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
First Contentful Paint
7.4 s
First Contentful Paint marks the time at which the first text or image is painted
Serve images in next-gen formats
Potential savings of 18 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Defer offscreen images
Potential savings of 463 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Avoid multiple page redirects
Potential savings of 780 ms
Redirects introduce additional delays before the page can be loaded
Server Backend Latencies
20 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
Network Round Trip Times
0 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
Total Blocking Time
10,170 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Speed Index
12.3 s
Speed Index shows how quickly the contents of a page are visibly populated
Reduce the impact of third-party code
Third-party code blocked the main thread for 710 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
Avoids enormous network payloads
Total size was 2,099 KiB
Large network payloads cost users real money and are highly correlated with long load times
Largest Contentful Paint element
18,240 ms
This is the largest contentful element painted within the viewport
Cumulative Layout Shift
0.001
Cumulative Layout Shift measures the movement of visible elements within the viewport
Reduce JavaScript execution time
20.5 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Initial server response time was short
Root document took 50 ms
Keep the server response time for the main document short because all other requests depend on it
Serve static assets with an efficient cache policy
84 resources found
A long cache lifetime can speed up repeat visits to your page
Avoid large layout shifts
1 layout shift found
These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to [windowing](https://web.dev/articles/cls#what_is_cls)
Avoid chaining critical requests
8 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
Largest Contentful Paint
18.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Avoid an excessive DOM size
2,010 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)
Reduce unused JavaScript
Potential savings of 388 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Max Potential First Input Delay
5,180 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
User Timing marks and measures
2 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Document uses legible font sizes
100% 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
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
Avoid serving legacy JavaScript to modern browsers
Potential savings of 0 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
Speed And Optimization Tips
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99,999,999
Global Rank
99,999,999
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