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91
twitch.tv
Last Updated: 1 month
Success
62% of passed verification steps
Warning
23% of total warning
Errors
15% of total errors, require fast action
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Desktop
Mobile
Performance
Desktop Score 41%
Best Practices
Desktop Score 69%
SEO
Desktop Score 100%
Performance
Mobile Score 38%
Best Practices
Mobile Score 96%
SEO
Mobile Score 100%
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Social Data
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Estimation Traffic and Earnings
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Desktop
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
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
Reduce JavaScript execution time
4.3 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Uses deprecated APIs
1 warning found
Deprecated APIs will eventually be removed from the browser
Cumulative Layout Shift
0.005
Cumulative Layout Shift measures the movement of visible elements within the viewport
Minimize main-thread work
6.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Legacy JavaScript
Est savings of 11 KiB
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile [Baseline](https://web.dev/articles/baseline-and-polyfills) features, unless you know you must support older browsers
Avoid large layout shifts
2 layout shifts 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)
Reduce unused JavaScript
Est savings of 431 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Max Potential First Input Delay
560 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
First Contentful Paint
0.3 s
First Contentful Paint marks the time at which the first text or image is painted
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
Total Blocking Time
1,970 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Use efficient cache lifetimes
Est savings of 611 KiB
A long cache lifetime can speed up repeat visits to your page
Reduce unused CSS
Est savings of 29 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity
Time to Interactive
5.0 s
Time to Interactive is the amount of time it takes for the page to become fully 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
3.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Speed Index
3.8 s
Speed Index shows how quickly the contents of a page are visibly populated
Improve image delivery
Est savings of 452 KiB
Reducing the download time of images can improve the perceived load time of the page and LCP
Font display
Est savings of 40 ms
Consider setting [font-display](https://developer.chrome.com/docs/performance/insights/font-display) to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with [font metric overrides](https://developer.chrome.com/blog/font-fallbacks).
Minify CSS
Est savings of 2 KiB
Minifying CSS files can reduce network payload sizes
Avoid enormous network payloads
Total size was 3,658 KiB
Large network payloads cost users real money and are highly correlated with long load times
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
Mobile
Reduce unused JavaScript
Est savings of 163 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Total Blocking Time
760 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Font display
Est savings of 30 ms
Consider setting [font-display](https://developer.chrome.com/docs/performance/insights/font-display) to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with [font metric overrides](https://developer.chrome.com/blog/font-fallbacks).
Minimize main-thread work
3.4 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Reduce JavaScript execution time
2.6 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
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
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
Use efficient cache lifetimes
Est savings of 922 KiB
A long cache lifetime can speed up repeat visits to your page
First Contentful Paint
6.4 s
First Contentful Paint marks the time at which the first text or image is painted
Max Potential First Input Delay
860 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
Improve image delivery
Est savings of 432 KiB
Reducing the download time of images can improve the perceived load time of the page and LCP
Reduce unused CSS
Est savings of 13 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity
Avoid long main-thread tasks
6 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
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
Document request latency
Est savings of 80 ms
Your first network request is the most important
Avoid multiple page redirects
Est savings of 780 ms
Redirects introduce additional delays before the page can be loaded
Avoid non-composited animations
1 animated element found
Animations which are not composited can be janky and increase CLS
Time to Interactive
14.1 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Avoids enormous network payloads
Total size was 2,032 KiB
Large network payloads cost users real money and are highly correlated with long load times
Speed Index
8.9 s
Speed Index shows how quickly the contents of a page are visibly populated
Legacy JavaScript
Est savings of 11 KiB
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile [Baseline](https://web.dev/articles/baseline-and-polyfills) features, unless you know you must support older browsers
Largest Contentful Paint
13.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Speed And Optimization Tips
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Alexa Rank
99,999,999
Global Rank
99,999,999
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