Tools & Wizards About Us

Report Summary

  • 89

    Performance

    Renders faster than
    90% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

vidar.ru

Издательство ВИДАР, профессиональная медицинская литература. Новости.

Page Load Speed

3 sec in total

First Response

690 ms

Resources Loaded

2 sec

Page Rendered

308 ms

About Website

Click here to check amazing Vidar content for Russia. Otherwise, check out these important facts you probably never knew about vidar.ru

Издательство ВИДАР предлагает широкий спектр медицинской литературы. Заказать и купить литературу по медицине можно на нашем сайте. Электронная библиотека книг по медицине.

Visit vidar.ru

Key Findings

We analyzed Vidar.ru page load time and found that the first response time was 690 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

vidar.ru performance score

89

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

81/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

72/100

25%

SI (Speed Index)

Value3.8 s

84/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.028

100/100

15%

TTI (Time to Interactive)

Value2.9 s

96/100

10%

Network Requests Diagram

vidar.ru

690 ms

vidart.css

870 ms

client.js

107 ms

watch.js

0 ms

Logo_Vidar-Site_2016_200x73.png

149 ms

Our browser made a total of 17 requests to load all elements on the main page. We found that 88% of them (15 requests) were addressed to the original Vidar.ru, 6% (1 request) were made to Cdn.gravitec.net and 6% (1 request) were made to Mc.yandex.ru. The less responsive or slowest element that took the longest time to load (870 ms) belongs to the original domain Vidar.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 69.8 kB (56%)

Content Size

124.1 kB

After Optimization

54.2 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Vidar.ru main page is 124.1 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. Only 5% of websites need less resources to load. HTML takes 75.1 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 56.9 kB

  • Original 75.1 kB
  • After minification 72.3 kB
  • After compression 18.2 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 56.9 kB or 76% of the original size.

Image Optimization

-26%

Potential reduce by 11.8 kB

  • Original 46.2 kB
  • After minification 34.4 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. Obviously, Vidar needs image optimization as it can save up to 11.8 kB or 26% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-41%

Potential reduce by 1.2 kB

  • Original 2.8 kB
  • After minification 2.8 kB
  • After compression 1.7 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. Vidar.ru needs all CSS files to be minified and compressed as it can save up to 1.2 kB or 41% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

15

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vidar. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

vidar.ru accessibility score

72

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.

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

vidar.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

vidar.ru SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

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 Vidar.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 Vidar.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 Vidar. 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: