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twitch.tv
Last Updated: 4 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 36%
Best Practices
Desktop Score 67%
SEO
Desktop Score 100%
Performance
Mobile Score 31%
Best Practices
Mobile Score 75%
SEO
Mobile Score 100%
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Desktop
Time to Interactive
6.8 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Reduce JavaScript execution time
6.5 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
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
Properly size images
Potential savings of 156 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
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)
Uses deprecated APIs
2 warnings found
Deprecated APIs will eventually be removed from the browser
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
Cumulative Layout Shift
0.002
Cumulative Layout Shift measures the movement of visible elements within the viewport
Network Round Trip Times
10 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 unused JavaScript
Potential savings of 802 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
Eliminate render-blocking resources
Potential savings of 250 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Serve static assets with an efficient cache policy
42 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay
720 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
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
Largest Contentful Paint
6.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Serve images in next-gen formats
Potential savings of 136 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
First Contentful Paint
0.6 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid an excessive DOM size
1,545 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)
Minimize third-party usage
Third-party code blocked the main thread for 110 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
Minimize main-thread work
8.2 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Largest Contentful Paint element
6,000 ms
This is the largest contentful element painted within the viewport
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 enormous network payloads
Total size was 5,761 KiB
Large network payloads cost users real money and are highly correlated with long load times
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
4.6 s
Speed Index shows how quickly the contents of a page are visibly populated
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
Total Blocking Time
2,560 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Mobile
Reduce JavaScript execution time
4.2 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Avoids enormous network payloads
Total size was 2,119 KiB
Large network payloads cost users real money and are highly correlated with long load times
Reduce unused JavaScript
Potential savings of 434 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity
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
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
10 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
Serve static assets with an efficient cache policy
69 resources found
A long cache lifetime can speed up repeat visits to your page
First Contentful Paint
6.9 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests
7 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
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
Time to Interactive
14.5 s
Time to Interactive is the amount of time it takes for the page to become fully interactive
Total Blocking Time
1,460 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Avoid multiple page redirects
Potential savings of 780 ms
Redirects introduce additional delays before the page can be loaded
Speed Index
9.5 s
Speed Index shows how quickly the contents of a page are visibly populated
Largest Contentful Paint
14.3 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Serve images in next-gen formats
Potential savings of 36 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
Uses deprecated APIs
1 warning found
Deprecated APIs will eventually be removed from the browser
Avoid an excessive DOM size
2,288 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)
Largest Contentful Paint element
14,260 ms
This is the largest contentful element painted within the viewport
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
Defer offscreen images
Potential savings of 411 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Minimize third-party usage
Third-party code blocked the main thread for 100 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
Max Potential First Input Delay
900 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Avoid long main-thread tasks
11 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Minimize main-thread work
5.3 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Speed And Optimization Tips
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Alexa Rank
99,999,999
Global Rank
99,999,999
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