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23
positronica.ru
Last Updated: 3 years
Success
40% of passed verification steps
Warning
30% of total warning
Errors
30% of total errors, require fast action
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Desktop
Mobile
Performance
Desktop Score 60%
Best Practices
Desktop Score 64%
SEO
Desktop Score 92%
Progressive Web App
Desktop Score 44%
Performance
Mobile Score 16%
Best Practices
Mobile Score 64%
SEO
Mobile Score 90%
Progressive Web App
Mobile Score 46%
Page Authority
Authority 48%
Domain Authority
Domain Authority 47%
Moz Rank
4.8/10
Bounce Rate
Rate 0%
Title Tag
13 Characters
403 FORBIDDEN
Meta Description
0 Characters
NO DATA
Effective URL
22 Characters
https://positronica.ru
Excerpt
Page content
403 Forbidden 403 Forbidden nginx/1.16.1
Keywords Cloud
Density
forbidden
1
nginx
1
Keyword Consistency
Keyword density is one of the main terms in SEO
Keyword
Freq
Title
Desc
Domain
H1
H2
forbidden
1
nginx
1
Google Preview
Your look like this in google search result
403 FORBIDDEN
https://positronica.ru
403 Forbidden 403 Forbidden nginx/1.16.1
Robots.txt
File No Found
http://positronica.ru/robots.txt
Sitemap.xml
File No Found
http://positronica.ru/sitemap.xml
Page Size
Code & Text Ratio
Document Size: ~153 B
Code Size: ~101 B
Text Size: ~52 B
Ratio: 33.99%
Estimation Traffic and Earnings
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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
Remove unused JavaScript
Potential savings of 241 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
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
Eliminate render-blocking resources
Potential savings of 1,890 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
141 requests • 1,080 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
First CPU Idle
1.8 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/).
First Contentful Paint
1.6 s
First Contentful Paint marks the time at which the first text or image is painted
Properly size images
Potential savings of 40 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
Cumulative Layout Shift
0.004
Cumulative Layout Shift measures the movement of visible elements within the viewport
Page load is not fast enough on mobile networks
Interactive on simulated mobile network at 13.0 s
A fast page load over a cellular network ensures a good mobile user experience
Total Blocking Time
100 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Preload key requests
Potential savings of 480 ms
Consider using `<link rel=preload>` to prioritize fetching resources that are currently requested later in page load
Reduce initial server response time
Root document took 2,220 ms
Keep the server response time for the main document short because all other requests depend on it
Largest Contentful Paint element
1 element found
This is the largest contentful element painted within the viewport
Time to Interactive
3.6 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Avoid an excessive DOM size
4,432 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 140 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
Avoid long main-thread tasks
5 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Avoid chaining critical requests
43 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
Speed Index
5.0 s
Speed Index shows how quickly the contents of a page are visibly populated
Minimizes main-thread work
1.7 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Max Potential First Input Delay
130 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Minify CSS
Potential savings of 6 KiB
Minifying CSS files can reduce network payload sizes
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
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
9 resources found
A long cache lifetime can speed up repeat visits to your page
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
Defer offscreen images
Potential savings of 29 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Largest Contentful Paint
2.5 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Minify JavaScript
Potential savings of 14 KiB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint
1.6 s
First Meaningful Paint measures when the primary content of a page is visible
Avoid serving legacy JavaScript to modern browsers
Potential savings of 12 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
Serve images in next-gen formats
Potential savings of 103 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
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
Avoids enormous network payloads
Total size was 1,080 KiB
Large network payloads cost users real money and are highly correlated with long load times
Avoid large layout shifts
5 elements found
These DOM elements contribute most to the CLS of the page.
Remove unused CSS
Potential savings of 27 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
Mobile
Minimize main-thread work
7.8 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
40 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
Minify CSS
Potential savings of 6 KiB
Minifying CSS files can reduce network payload sizes
Largest Contentful Paint element
1 element found
This is the largest contentful element painted within the viewport
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
8.6 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/).
Avoid serving legacy JavaScript to modern browsers
Potential savings of 12 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
Eliminate render-blocking resources
Potential savings of 4,710 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Reduce the impact of third-party code
Third-party code blocked the main thread for 1,070 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
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 CSS
Potential savings of 28 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
Total Blocking Time
1,010 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
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
Remove unused JavaScript
Potential savings of 240 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
Speed Index
11.4 s
Speed Index shows how quickly the contents of a page are visibly populated
Page load is not fast enough on mobile networks
Interactive at 12.7 s
A fast page load over a cellular network ensures a good mobile user experience
First Meaningful Paint
5.5 s
First Meaningful Paint measures when the primary content of a page is visible
First Contentful Paint (3G)
10380 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Reduce JavaScript execution time
4.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint
5.5 s
First Contentful Paint marks the time at which the first 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
Avoid an excessive DOM size
4,432 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)
Max Potential First Input Delay
510 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Serve static assets with an efficient cache policy
9 resources found
A long cache lifetime can speed up repeat visits to your page
Avoids enormous network payloads
Total size was 1,018 KiB
Large network payloads cost users real money and are highly correlated with long load times
Defer offscreen images
Potential savings of 151 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Minify JavaScript
Potential savings of 14 KiB
Minifying JavaScript files can reduce payload sizes and script parse time
Serve images in next-gen formats
Potential savings of 103 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
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
Keep request counts low and transfer sizes small
132 requests • 1,018 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
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
Cumulative Layout Shift
0.003
Cumulative Layout Shift measures the movement of visible elements within the viewport
Avoid large layout shifts
5 elements found
These DOM elements contribute most to the CLS of the page.
Largest Contentful Paint
8.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted
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
Tap targets are not sized appropriately
68% 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
12.7 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Initial server response time was short
Root document took 570 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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