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Top Technologies

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Web Frameworks

14 centrum.sk Last Updated: 9 months

Success 55% of passed verification steps
Warning 7% of total warning
Errors 38% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 60%
Best Practices Desktop Score 62%
SEO Desktop Score 70%
Progressive Web App Desktop Score 19%
Performance Mobile Score 29%
Best Practices Mobile Score 62%
SEO Mobile Score 58%
Progressive Web App Mobile Score 19%
Page Authority Authority 0%
Domain Authority Domain Authority 0%
Moz Rank 0.0/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 10 Characters
CENTRUM.SK
Meta Description 0 Characters
NO DATA
Effective URL 22 Characters
https://www.centrum.sk
Excerpt Page content
Centrum.sk Prihlásiť sa Upraviť túto stránku Dobrý deň, dnes je 24.12.2019, sviatok má Adam a Eva, zajtra 1.sviatok vianočný. Internet Firmy Správy Vyhľadávanie   Služby Aut...
Keywords Cloud Density
vianoce19 foto18 pred8 toto8 bude8 doma6 život5 dnes5 ktoré5 takto5
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
vianoce 19
foto 18
pred 8
toto 8
bude 8
doma 6
život 5
dnes 5
ktoré 5
takto 5
Google Preview Your look like this in google search result
CENTRUM.SK
https://www.centrum.sk
Centrum.sk Prihlásiť sa Upraviť túto stránku Dobrý deň, dnes je 24.12.2019, sviatok má Adam a Eva, zajtra 1.sviatok vianočný. Internet Firmy Správy Vyhľadávanie   Služby Aut...
Robots.txt File Detected
Sitemap.xml File No Found
Page Size Code & Text Ratio
Document Size: ~132.58 KB
Code Size: ~131.5 KB
Text Size: ~1.08 KB Ratio: 0.82%

Estimation Traffic and Earnings

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Desktop

Desktop Screenshot
Avoid chaining critical requests 10 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
Avoid an excessive DOM size 2,256 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)
Minify JavaScript Potential savings of 2 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 0.7 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 256 requests • 2,261 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 164 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 140 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 4.3 s
Time to interactive is the amount of time it takes for the page to become fully interactive
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
Page load is not fast enough on mobile networks Interactive on simulated mobile network at 19.6 s
A fast page load over a cellular network ensures a good mobile user experience
Estimated Input Latency 20 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
Remove unused CSS Potential savings of 16 KB
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
Serve images in next-gen formats Potential savings of 167 KB
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
User Timing marks and measures 6 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Reduce server response times (TTFB) Root document took 710 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 0 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Efficiently encode images Potential savings of 4 KB
Optimized images load faster and consume less cellular data
Enable text compression Potential savings of 2 KB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Minimize third-party usage Third-party code blocked the main thread for 170 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
Total Blocking Time 70 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 1.7 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Defer offscreen images Potential savings of 361 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
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
Properly size images Potential savings of 184 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 3.6 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 2.7 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).
Avoids enormous network payloads Total size was 2,257 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 3.5 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.7 s
First Contentful Paint marks the time at which the first text or image is painted

Mobile

Mobile Screenshot
Properly size images Potential savings of 53 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 11.5 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 11.1 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).
Avoids enormous network payloads Total size was 2,073 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 10.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 2.2 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 10 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
Avoid an excessive DOM size 2,247 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)
Minify JavaScript Potential savings of 2 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 2.3 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 238 requests • 2,077 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 153 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 460 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 18.6 s
Time to interactive is the amount of time it takes for the page to become fully interactive
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
Page load is not fast enough on mobile networks Interactive at 18.6 s
A fast page load over a cellular network ensures a good mobile user experience
First Contentful Paint (3G) 4456 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Estimated Input Latency 90 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
Remove unused CSS Potential savings of 16 KB
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
Serve images in next-gen formats Potential savings of 144 KB
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
User Timing marks and measures 6 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Reduce server response times (TTFB) Root document took 850 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 640 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Enable text compression Potential savings of 2 KB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes
Efficiently encode images Potential savings of 4 KB
Optimized images load faster and consume less cellular data
Reduce the impact of third-party code Third-party code blocked the main thread for 1,620 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
Total Blocking Time 1,580 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 5.4 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Defer offscreen images Potential savings of 199 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
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

Speed And Optimization Tips

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Alexa Rank

0

Local Rank: / Users: / PageViews:

Global Rank

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/1.1 200 OK
Date: Tue, 24 Dec 2019 14:39:45 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive
Set-Cookie: __cfduid=d63d84f5e6e48601287ec21730fd9f0a31577198384; expires=Thu, 23-Jan-20 14:39:44 GMT; path=/; domain=.centrum.sk; HttpOnly; SameSite=Lax
X-Powered-By: PHP/7.1.33
CF-Cache-Status: DYNAMIC
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Server: cloudflare
CF-RAY: 54a353901ebfe6f8-EWR
Content-Encoding: gzip
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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