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11 simchera.ru Last Updated: 2 days

Success 39% of passed verification steps
Warning 38% of total warning
Errors 23% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 93%
Best Practices Desktop Score 79%
SEO Desktop Score 90%
Progressive Web App Desktop Score 52%
Performance Mobile Score 72%
Best Practices Mobile Score 79%
SEO Mobile Score 92%
Progressive Web App Mobile Score 50%
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Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 7 Characters
ГЛАВНАЯ
Meta Description 107 Characters
На сайте представлены публикации профессора Василия Михайловича Симчеры- учебные пособия, монографии,статьи
Effective URL 23 Characters
https://www.simchera.ru
Excerpt Page content
Главная Главная 2 Основные публикацииНовая страницаБиография ПодробнееНа странице «полезные ссылки » содержатся прямые ссылки на: данные международных и национальных статистиче...
Keywords Cloud Density
статистических3 ссылки2 также2 международных2 национальных2 представлены1 фондов и1 других1 ведомств1 электронные1
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
статистических 3
ссылки 2
также 2
международных 2
национальных 2
представлены 1
фондов и 1
других 1
ведомств 1
электронные 1
Google Preview Your look like this in google search result
ГЛАВНАЯ
https://www.simchera.ru
На сайте представлены публикации профессора Василия Михайловича Симчеры- учебные пособия, монографии,статьи
Robots.txt File No Found
Sitemap.xml File Detected
Page Size Code & Text Ratio
Document Size: ~8.14 KB
Code Size: ~5.91 KB
Text Size: ~2.23 KB Ratio: 27.36%

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
Efficiently encode images Potential savings of 30 KiB
Optimized images load faster and consume less cellular data
Avoids enormous network payloads Total size was 437 KiB
Large network payloads cost users real money and are highly correlated with long load times
First Contentful Paint 1.2 s
First Contentful Paint marks the time at which the first text or image is painted
Time to Interactive 1.2 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Speed Index 1.2 s
Speed Index shows how quickly the contents of a page are visibly populated
First Meaningful Paint 1.2 s
First Meaningful Paint measures when the primary content of a page is visible
Estimated Input Latency 10 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 13 resources found
A long cache lifetime can speed up repeat visits to your page
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
JavaScript execution time 0.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
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
Avoids an excessive DOM size 72 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 35 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
Max Potential First Input Delay 30 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Minimizes main-thread work 0.3 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Eliminate render-blocking resources Potential savings of 1,000 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Keep request counts low and transfer sizes small 45 requests • 437 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve images in next-gen formats Potential savings of 97 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
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Remove unused CSS Potential savings of 31 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
Avoid large layout shifts 1 element found
These DOM elements contribute most to the CLS of the page.
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 1.3 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 9 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
First CPU Idle 1.2 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 third-party usage Third-party code blocked the main thread for 0 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
Initial server response time was short Root document took 210 ms
Keep the server response time for the main document short because all other requests depend on it

Mobile

Mobile Screenshot
First Contentful Paint (3G) 8840.5 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
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
Max Potential First Input Delay 60 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Tap targets are sized appropriately 100% 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
Time to Interactive 4.3 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Largest Contentful Paint 4.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted
First CPU Idle 4.1 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/).
Eliminate render-blocking resources Potential savings of 3,570 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
First Contentful Paint 4.1 s
First Contentful Paint marks the time at which the first text or image is painted
Total Blocking Time 30 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
Minimizes main-thread work 0.8 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
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 an excessive DOM size 71 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)
Speed Index 4.1 s
Speed Index shows how quickly the contents of a page are visibly populated
Efficiently encode images Potential savings of 30 KiB
Optimized images load faster and consume less cellular data
Keep request counts low and transfer sizes small 44 requests • 436 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Estimated Input Latency 10 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
Avoid long main-thread tasks 2 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
Serve images in next-gen formats Potential savings of 97 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
First Meaningful Paint 4.1 s
First Meaningful Paint measures when the primary content of a page is visible
Minimize third-party usage Third-party code blocked the main thread for 0 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
Serve static assets with an efficient cache policy 12 resources found
A long cache lifetime can speed up repeat visits to your page
Remove unused CSS Potential savings of 31 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 436 KiB
Large network payloads cost users real money and are highly correlated with long load times
Includes front-end JavaScript libraries with known security vulnerabilities 9 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
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
JavaScript execution time 0.2 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Avoid chaining critical requests 35 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
Initial server response time was short Root document took 70 ms
Keep the server response time for the main document short because all other requests depend on it

Speed And Optimization Tips

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Alexa Rank

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Information Server

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