Report Summary

  • 46

    Performance

    Renders faster than
    65% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

nauka21vek.ru

Новости науки и техники, технологии, открытия и изобретения | Наука 21 век

Page Load Speed

6 sec in total

First Response

881 ms

Resources Loaded

4.8 sec

Page Rendered

274 ms

About Website

Click here to check amazing Nauka 21 Vek content for Russia. Otherwise, check out these important facts you probably never knew about nauka21vek.ru

Новости науки и техники в России и за рубежом. Авиация и космонавтика, вооружения, hi-tech, открытия, концепции и изобретения, мир моторов, гипотезы и факты

Visit nauka21vek.ru

Key Findings

We analyzed Nauka21vek.ru page load time and found that the first response time was 881 ms and then it took 5.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

nauka21vek.ru performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.9 s

100/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

75/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value3,350 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value22.7 s

1/100

10%

Network Requests Diagram

nauka21vek.ru

881 ms

style.css

260 ms

pagenavi-css.css

263 ms

share.js

254 ms

openapi.js

253 ms

Our browser made a total of 92 requests to load all elements on the main page. We found that 24% of them (22 requests) were addressed to the original Nauka21vek.ru, 47% (43 requests) were made to St6-21.vk.com and 10% (9 requests) were made to Vk.com. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source St6-21.vk.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 450.3 kB (16%)

Content Size

2.9 MB

After Optimization

2.4 MB

In fact, the total size of Nauka21vek.ru main page is 2.9 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. Javascripts take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 52.9 kB

  • Original 66.6 kB
  • After minification 63.2 kB
  • After compression 13.6 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 52.9 kB or 79% of the original size.

Image Optimization

-4%

Potential reduce by 8.3 kB

  • Original 204.4 kB
  • After minification 196.2 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Nauka 21 Vek images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 316.7 kB

  • Original 2.1 MB
  • After minification 2.1 MB
  • After compression 1.8 MB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 316.7 kB or 15% of the original size.

CSS Optimization

-14%

Potential reduce by 72.4 kB

  • Original 522.9 kB
  • After minification 522.9 kB
  • After compression 450.5 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. Nauka21vek.ru needs all CSS files to be minified and compressed as it can save up to 72.4 kB or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 54 (61%)

Requests Now

88

After Optimization

34

The browser has sent 88 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nauka 21 Vek. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 35 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

nauka21vek.ru accessibility score

63

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Names and labels

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.

Impact

Issue

High

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

High

Links do not have a discernible name

Internationalization and localization

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

Impact

Issue

High

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

Best Practices

nauka21vek.ru best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

nauka21vek.ru SEO score

67

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nauka21vek.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Nauka21vek.ru main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph description is not detected on the main page of Nauka 21 Vek. 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: