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Top Technologies

Google Font API
Font Scripts
WordPress
CMS
Nginx
Web Servers
Font Awesome
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CloudFlare
CDN
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Twitter Bootstrap
Web Frameworks

24 cameraquaylen.vn Last Updated: 2 months

Success 47% of passed verification steps
Warning 38% of total warning
Errors 15% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 52%
Best Practices Desktop Score 64%
SEO Desktop Score 91%
Progressive Web App Desktop Score 30%
Performance Mobile Score 6%
Best Practices Mobile Score 64%
SEO Mobile Score 91%
Progressive Web App Mobile Score 32%
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Social Data

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Technologies

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PWA - Manifest

Manifest is not valid
Your site don't have valid manifest.json, read more in Web App Manifest

Desktop

Desktop Screenshot
Avoid serving legacy JavaScript to modern browsers Potential savings of 36 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
Minify CSS Potential savings of 2 KiB
Minifying CSS files can reduce network payload sizes
Total Blocking Time 210 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Defer offscreen images Potential savings of 2 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
First Contentful Paint 1.8 s
First Contentful Paint marks the time at which the first text or image is painted
First Meaningful Paint 2.8 s
First Meaningful Paint measures when the primary content of a page is visible
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
Cumulative Layout Shift 0.301
Cumulative Layout Shift measures the movement of visible elements within the viewport
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
Keep request counts low and transfer sizes small 131 requests • 1,968 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
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
Time to Interactive 4.3 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Avoid large layout shifts 5 elements found
These DOM elements contribute most to the CLS of the page.
Serve images in next-gen formats Potential savings of 10 KiB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Largest Contentful Paint 2.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Includes front-end JavaScript libraries with known security vulnerabilities 5 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Page load is not fast enough on mobile networks Interactive on simulated mobile network at 17.6 s
A fast page load over a cellular network ensures a good mobile user experience
Server Backend Latencies 0 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
Avoids large JavaScript libraries with smaller alternatives 0 large libraries found
Large JavaScript libraries can lead to poor performance. Prefer smaller, functionally equivalent libraries to reduce your bundle size
Initial server response time was short Root document took 170 ms
Keep the server response time for the main document short because all other requests depend on it
First CPU Idle 3.1 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle/).
Estimated Input Latency 30 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
Serve static assets with an efficient cache policy 8 resources found
A long cache lifetime can speed up repeat visits to your page
Remove unused JavaScript Potential savings of 484 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
JavaScript execution time 0.6 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Avoid an excessive DOM size 3,188 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 chaining critical requests 32 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
Remove unused CSS Potential savings of 151 KiB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Avoids enormous network payloads Total size was 1,968 KiB
Large network payloads cost users real money and are highly correlated with long load times
Speed Index 3.5 s
Speed Index shows how quickly the contents of a page are visibly populated
Max Potential First Input Delay 230 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Minimize main-thread work 2.8 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 13 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
Eliminate render-blocking resources Potential savings of 90 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 11 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay

Mobile

Mobile Screenshot
Reduce the impact of third-party code Third-party code blocked the main thread for 740 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
Time to Interactive 16.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive
First CPU Idle 14.5 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle/).
Page load is not fast enough on mobile networks Interactive at 16.8 s
A fast page load over a cellular network ensures a good mobile user experience
Estimated Input Latency 170 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
Document uses legible font sizes 86.85% 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 2 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Includes front-end JavaScript libraries with known security vulnerabilities 5 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Avoid chaining critical requests 32 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
Eliminate render-blocking resources Potential savings of 870 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Max Potential First Input Delay 690 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Reduce JavaScript execution time 2.7 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Tap targets are not sized appropriately 91% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), and have enough space around them, to be easy enough to tap without overlapping onto other elements
Speed Index 11.4 s
Speed Index shows how quickly the contents of a page are visibly populated
Remove unused CSS Potential savings of 152 KiB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
First Contentful Paint (3G) 13510.5 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Largest Contentful Paint 7.5 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Total Blocking Time 1,680 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Minify CSS Potential savings of 2 KiB
Minifying CSS files can reduce network payload sizes
Avoids large JavaScript libraries with smaller alternatives 0 large libraries found
Large JavaScript libraries can lead to poor performance. Prefer smaller, functionally equivalent libraries to reduce your bundle size
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 36 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
Server Backend Latencies 0 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 3,193 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)
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
Serve images in next-gen formats Potential savings of 10 KiB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Avoid large layout shifts 5 elements found
These DOM elements contribute most to the CLS of the page.
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
Remove unused JavaScript Potential savings of 484 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
Avoids enormous network payloads Total size was 1,797 KiB
Large network payloads cost users real money and are highly correlated with long load times
Serve static assets with an efficient cache policy 8 resources found
A long cache lifetime can speed up repeat visits to your page
Keep request counts low and transfer sizes small 125 requests • 1,797 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Minimize main-thread work 8.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 6.2 s
First Contentful Paint marks the time at which the first text or image is painted
Initial server response time was short Root document took 270 ms
Keep the server response time for the main document short because all other requests depend on it
Cumulative Layout Shift 1.176
Cumulative Layout Shift measures the movement of visible elements within the viewport
First Meaningful Paint 10.5 s
First Meaningful Paint measures when the primary content of a page is visible

Speed And Optimization Tips

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2,728,598

Global Rank

26,778

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