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niv.ru screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 25% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

niv.ru

Научная библиотека

Page Load Speed

4.9 sec in total

First Response

536 ms

Resources Loaded

4.1 sec

Page Rendered

278 ms

niv.ru screenshot

About Website

Welcome to niv.ru homepage info - get ready to check Niv best content for Russia right away, or after learning these important things about niv.ru

Материалы по литературе, культуре, искусству, наукам

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Key Findings

We analyzed Niv.ru page load time and found that the first response time was 536 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

niv.ru performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

78/100

10%

LCP (Largest Contentful Paint)

Value2.4 s

92/100

25%

SI (Speed Index)

Value15.5 s

0/100

10%

TBT (Total Blocking Time)

Value6,280 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.762

5/100

15%

TTI (Time to Interactive)

Value24.9 s

0/100

10%

Network Requests Diagram

niv.ru

536 ms

elker_30.js

689 ms

gerb.jpg

507 ms

top100.jcn

393 ms

oncopy.js

146 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 19% of them (6 requests) were addressed to the original Niv.ru, 19% (6 requests) were made to Googleads.g.doubleclick.net and 19% (6 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (2.4 sec) relates to the external source Tpc.googlesyndication.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 63.8 kB (41%)

Content Size

157.4 kB

After Optimization

93.5 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Niv.ru main page is 157.4 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. 35% of websites need less resources to load. Images take 60.1 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 37.4 kB

  • Original 45.6 kB
  • After minification 45.1 kB
  • After compression 8.2 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 37.4 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 931 B

  • Original 60.1 kB
  • After minification 59.2 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. Niv images are well optimized though.

JavaScript Optimization

-49%

Potential reduce by 25.5 kB

  • Original 51.7 kB
  • After minification 47.8 kB
  • After compression 26.1 kB

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 25.5 kB or 49% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (32%)

Requests Now

28

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Niv. 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 as a result speed up the page load time.

Network Requests Diagram

niv.ru

niv.ru

536 ms

elker_30.js

elker_30.js

689 ms

gerb.jpg

gerb.jpg

507 ms

top100.jcn

top100.jcn

393 ms

oncopy.js

oncopy.js

146 ms

polosa.gif

polosa.gif

256 ms

niv.gif

niv.gif

389 ms

show_rekl_5.htm

show_rekl_5.htm

3 ms

show_ads.js

show_ads.js

13 ms

ca-pub-9322070922522040.js

ca-pub-9322070922522040.js

68 ms

zrt_lookup.html

zrt_lookup.html

5 ms

show_ads_impl.js

show_ads_impl.js

4 ms

zrt_lookup.html

zrt_lookup.html

55 ms

show_ads_impl.js

show_ads_impl.js

65 ms

top100.scn

top100.scn

159 ms

aci.js

aci.js

203 ms

ads

ads

282 ms

osd.js

osd.js

17 ms

ads

ads

942 ms

ads

ads

1275 ms

549 ms

444 ms

abg.js

abg.js

2370 ms

m_js_controller.js

m_js_controller.js

2137 ms

16102173296914125271

16102173296914125271

2175 ms

css

css

854 ms

googlelogo_color_112x36dp.png

googlelogo_color_112x36dp.png

527 ms

match

match

194 ms

x_button_blue2.png

x_button_blue2.png

41 ms

s

s

39 ms

imgad

imgad

18 ms

nessie_icon_tiamat_white.png

nessie_icon_tiamat_white.png

17 ms

Accessibility Review

niv.ru accessibility score

58

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

Image elements do not have [alt] attributes

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

niv.ru best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

niv.ru SEO score

85

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Niv.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 Niv.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

niv.ru

Open Graph description is not detected on the main page of Niv. 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: