Report Summary

  • 97

    Performance

    Renders faster than
    95% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

zub.ru

Стоматология Зуб.ру - сеть стоматологических клиник в Москве

Page Load Speed

5.7 sec in total

First Response

1.3 sec

Resources Loaded

4.2 sec

Page Rendered

238 ms

zub.ru screenshot

About Website

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

Адреса, услуги и выгодные цены стоматологических клиник Зуб.ру.

Visit zub.ru

Key Findings

We analyzed Zub.ru page load time and found that the first response time was 1.3 sec and then it took 4.5 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

zub.ru performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

87/100

10%

LCP (Largest Contentful Paint)

Value1.9 s

98/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value2.0 s

99/100

10%

Network Requests Diagram

zub.ru

1262 ms

kernel_main.css

304 ms

template_0e8224a25c2e8cb565479c78115a8d2f.css

302 ms

kernel_main.js

539 ms

styles_new.css

422 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 83% of them (55 requests) were addressed to the original Zub.ru, 6% (4 requests) were made to Mc.yandex.ru and 3% (2 requests) were made to Bitrix.info. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Zub.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 540.8 kB (48%)

Content Size

1.1 MB

After Optimization

583.2 kB

In fact, the total size of Zub.ru main page is 1.1 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. 40% of websites need less resources to load. Images take 501.5 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 49.6 kB

  • Original 67.7 kB
  • After minification 65.5 kB
  • After compression 18.1 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 49.6 kB or 73% of the original size.

Image Optimization

-14%

Potential reduce by 68.7 kB

  • Original 501.5 kB
  • After minification 432.9 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, Zub needs image optimization as it can save up to 68.7 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-75%

Potential reduce by 356.3 kB

  • Original 475.6 kB
  • After minification 417.6 kB
  • After compression 119.3 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 356.3 kB or 75% of the original size.

CSS Optimization

-84%

Potential reduce by 66.2 kB

  • Original 79.1 kB
  • After minification 62.5 kB
  • After compression 13.0 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. Zub.ru needs all CSS files to be minified and compressed as it can save up to 66.2 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (19%)

Requests Now

63

After Optimization

51

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zub. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

zub.ru accessibility score

94

Accessibility Issues

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

Links do not have a discernible name

Best Practices

zub.ru best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

zub.ru SEO score

92

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

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

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 Zub.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 Zub.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

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