Access nrcki.ru. Национальный исследовательский центр Курчатовский институт

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

33/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value7.7 s

25/100

10%

TBT (Total Blocking Time)

Value510 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0.096

90/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

nrcki.ru

1721 ms

base2011.css

169 ms

periodics_new.css

309 ms

jquery.lightbox.css

326 ms

jquery-ui-1.7.1.css

332 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that all of those requests were addressed to Nrcki.ru and no external sources were called. The less responsive or slowest element that took the longest time to load (3.8 sec) belongs to the original domain Nrcki.ru.

Content Size

118.8 kB

After Optimization

17.0 kB

In fact, the total size of Nrcki.ru main page is 118.8 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. CSS take 66.8 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 44.6 kB

Original 52.0 kB
After minification 47.0 kB
After compression 7.4 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 44.6 kB or 86% of the original size.

CSS Optimization

-86%

Potential reduce by 57.1 kB

Original 66.8 kB
After minification 49.8 kB
After compression 9.7 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Nrcki.ru needs all CSS files to be minified and compressed as it can save up to 57.1 kB or 86% of the original size.

Requests Now

After Optimization

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nrcki. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

These are opportunities to improve keyboard navigation in your application.

High

Some elements have a [tabindex] value greater than 0

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

RU
Language Claimed

RU
Encoding

WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nrcki.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it matches the claimed language. Our system also found out that Nrcki.ru main page’s claimed encoding is windows-1251. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

nrcki.ru

Open Graph description is not detected on the main page of Nrcki. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks:

Report Summary

Performance

Accessibility

Best Practices

SEO

Национальный исследовательский центр Курчатовский институт

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

nrcki.ru

base2011.css

periodics_new.css

jquery.lightbox.css

jquery-ui-1.7.1.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

nrcki.ru

base2011.css

periodics_new.css

jquery.lightbox.css

jquery-ui-1.7.1.css

base.js

jquery-1.3.2.js

site_settings.js

jquery-ui-1.7.1.custom.min.js

jquery.lightbox.js

onmouse.js

chrome_menu.css

style38.css

chromemenu.js

rotate_div.js

jquery.qtip.js

maptips.js

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