Report Summary

  • 7

    Performance

    Renders faster than
    22% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

33zub.ru

Стоматологические клиники «33 ЗУБ», стоматология в Петербурге (спб), цены

Page Load Speed

14.4 sec in total

First Response

1.5 sec

Resources Loaded

12 sec

Page Rendered

869 ms

33zub.ru screenshot

About Website

Click here to check amazing 33 Zub content for Russia. Otherwise, check out these important facts you probably never knew about 33zub.ru

Стоматологическая клиника «33-й Зуб» - это стоматология в Петербурге по низким ценам и отличного качества.

Visit 33zub.ru

Key Findings

We analyzed 33zub.ru page load time and found that the first response time was 1.5 sec and then it took 12.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

33zub.ru performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

26/100

10%

LCP (Largest Contentful Paint)

Value37.6 s

0/100

25%

SI (Speed Index)

Value13.3 s

2/100

10%

TBT (Total Blocking Time)

Value1,950 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.513

15/100

15%

TTI (Time to Interactive)

Value29.6 s

0/100

10%

Network Requests Diagram

33zub.ru

1541 ms

www.33zub.ru

1921 ms

layout.css

590 ms

styles.css

283 ms

jquery.js

1387 ms

Our browser made a total of 79 requests to load all elements on the main page. We found that 90% of them (71 requests) were addressed to the original 33zub.ru, 3% (2 requests) were made to Google-analytics.com and 3% (2 requests) were made to Counter.yadro.ru. The less responsive or slowest element that took the longest time to load (7.8 sec) belongs to the original domain 33zub.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 254.1 kB (29%)

Content Size

868.6 kB

After Optimization

614.4 kB

In fact, the total size of 33zub.ru main page is 868.6 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. 25% of websites need less resources to load. Images take 590.4 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 76.1 kB

  • Original 89.7 kB
  • After minification 81.9 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 76.1 kB or 85% of the original size.

Image Optimization

-9%

Potential reduce by 52.8 kB

  • Original 590.4 kB
  • After minification 537.6 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. 33 Zub images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 106.2 kB

  • Original 166.6 kB
  • After minification 148.5 kB
  • After compression 60.4 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 106.2 kB or 64% of the original size.

CSS Optimization

-87%

Potential reduce by 19.0 kB

  • Original 21.9 kB
  • After minification 14.7 kB
  • After compression 2.9 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. 33zub.ru needs all CSS files to be minified and compressed as it can save up to 19.0 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (28%)

Requests Now

75

After Optimization

54

The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 33 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 6 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

33zub.ru accessibility score

66

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

33zub.ru best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

33zub.ru SEO score

79

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

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

    N/A

  • Encoding

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 33zub.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 33zub.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 33 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: