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2 nkj.ru Last Updated: 4 weeks

Success 63% of passed verification steps
Warning 7% of total warning
Errors 30% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 70%
Best Practices Desktop Score 77%
SEO Desktop Score 92%
Progressive Web App Desktop Score 52%
Performance Mobile Score 27%
Best Practices Mobile Score 62%
SEO Mobile Score 90%
Progressive Web App Mobile Score 54%
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Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 13 Characters
НАУКА И ЖИЗНЬ
Meta Description 130 Characters
Сайт журнала «Наука и жизнь»: наука, новости науки, российская наука, наука и образование. Архив журнала, форум, интернет-магазин.
Effective URL 18 Characters
https://www.nkj.ru
Excerpt Page content
Наука и жизнь ...
Keywords Cloud Density
августа24 новости6 можно6 жизнь4 только4 может4 коронавируса3 оформить3 журнал3 иммунитет3
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
августа 24
новости 6
можно 6
жизнь 4
только 4
может 4
коронавируса 3
оформить 3
журнал 3
иммунитет 3
Google Preview Your look like this in google search result
НАУКА И ЖИЗНЬ
https://www.nkj.ru
Сайт журнала «Наука и жизнь»: наука, новости науки, российская наука, наука и образование. Архив журнала, форум, интернет-магазин.
Robots.txt File Detected
Sitemap.xml File Detected
Whois Is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system
Updated: 1970-01-01 / 51 years
Create on: 2005-03-28 / 15 years
Expires on: 2021-03-28 / 6 months 10 days

RU-CENTER-RU ,

Nameservers
dns2.fastdns24.org.
dns3.fastdns24.eu.
dns4.fastdns24.link.
dns.fastdns24.com.
Page Size Code & Text Ratio
Document Size: ~70.42 KB
Code Size: ~36.21 KB
Text Size: ~34.21 KB Ratio: 48.58%

Estimation Traffic and Earnings

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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
Keep request counts low and transfer sizes small 145 requests • 3,418 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Total Blocking Time 70 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Serve static assets with an efficient cache policy 80 resources found
A long cache lifetime can speed up repeat visits to your page
User Timing marks and measures 9 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Eliminate render-blocking resources Potential savings of 580 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Minimizes main-thread work 1.4 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 260 ms
Keep the server response time for the main document short because all other requests depend on it
JavaScript execution time 0.7 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Minimize third-party usage Third-party code blocked the main thread for 190 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
First Contentful Paint 1.0 s
First Contentful Paint marks the time at which the first text or image is painted
Largest Contentful Paint 4.6 s
Largest Contentful Paint marks the time at which the largest text or image is painted
First Meaningful Paint 1.0 s
First Meaningful Paint measures when the primary content of a page is visible
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
Speed Index 1.5 s
Speed Index shows how quickly the contents of a page are visibly populated
Efficiently encode images Potential savings of 1,539 KiB
Optimized images load faster and consume less cellular data
Avoid large layout shifts 5 elements found
These DOM elements contribute most to the CLS of the page.
Avoid chaining critical requests 12 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
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
First CPU Idle 1.6 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/).
Max Potential First Input Delay 90 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Remove unused CSS Potential savings of 26 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 an excessive DOM size 714 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 enormous network payloads Total size was 3,418 KiB
Large network payloads cost users real money and are highly correlated with long load times
Minify CSS Potential savings of 2 KiB
Minifying CSS files can reduce network payload sizes
Cumulative Layout Shift 0.295
Cumulative Layout Shift measures the movement of visible elements within the viewport
Serve images in next-gen formats Potential savings of 1,850 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 long main-thread tasks 4 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Properly size images Potential savings of 595 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
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
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
Includes front-end JavaScript libraries with known security vulnerabilities 4 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Time to Interactive 1.6 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Remove unused JavaScript Potential savings of 320 KiB
Remove unused JavaScript to reduce bytes consumed by network activity

Mobile

Mobile Screenshot
First Contentful Paint (3G) 8077 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Serve images in next-gen formats Potential savings of 293 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
Estimated Input Latency 270 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
Avoids an excessive DOM size 329 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)
Eliminate render-blocking resources Potential savings of 1,420 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 53 resources found
A long cache lifetime can speed up repeat visits to your page
Remove unused CSS Potential savings of 32 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
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
Properly size images Potential savings of 9 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
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
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
Avoid multiple page redirects Potential savings of 780 ms
Redirects introduce additional delays before the page can be loaded
Reduce the impact of third-party code Third-party code blocked the main thread for 2,630 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
Keep request counts low and transfer sizes small 119 requests • 1,478 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Largest Contentful Paint 11.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Total Blocking Time 1,600 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Avoids enormous network payloads Total size was 1,478 KiB
Large network payloads cost users real money and are highly correlated with long load times
Avoid chaining critical requests 11 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
First Meaningful Paint 4.1 s
First Meaningful Paint measures when the primary content of a page is visible
Efficiently encode images Potential savings of 165 KiB
Optimized images load faster and consume less cellular data
Minify CSS Potential savings of 5 KiB
Minifying CSS files can reduce network payload sizes
User Timing marks and measures 10 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
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
Reduce JavaScript execution time 5.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Time to Interactive 8.6 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Includes front-end JavaScript libraries with known security vulnerabilities 4 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
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
Remove unused JavaScript Potential savings of 308 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
Speed Index 5.5 s
Speed Index shows how quickly the contents of a page are visibly populated
First Contentful Paint 4.1 s
First Contentful Paint marks the time at which the first text or image is painted
Tap targets are not sized appropriately 80% 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
Defer offscreen images Potential savings of 24 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Max Potential First Input Delay 620 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
First CPU Idle 7.8 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/).
Minimize main-thread work 7.5 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Document uses legible font sizes 97.52% 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

Speed And Optimization Tips

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Alexa Rank

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Information Server

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