Tools & Wizards About Us
3z.ru screenshot

Report Summary

  • 8

    Performance

    Renders faster than
    22% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

3z.ru

Глазная клиника 3Z - офтальмология в Краснодаре

Page Load Speed

6.4 sec in total

First Response

540 ms

Resources Loaded

5.4 sec

Page Rendered

431 ms

3z.ru screenshot

About Website

Visit 3z.ru now to see the best up-to-date 3Z content for Russia and also check out these interesting facts you probably never knew about 3z.ru

3Z — федеральная сеть офтальмологических клиник, оказывающая услуги диагностики и лечения глазных заболеваний в Краснодаре.

Visit 3z.ru

Key Findings

We analyzed 3z.ru page load time and found that the first response time was 540 ms and then it took 5.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

3z.ru performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

60/100

10%

LCP (Largest Contentful Paint)

Value14.6 s

0/100

25%

SI (Speed Index)

Value14.1 s

1/100

10%

TBT (Total Blocking Time)

Value2,490 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.891

3/100

15%

TTI (Time to Interactive)

Value17.2 s

4/100

10%

Network Requests Diagram

3z.ru

540 ms

3z.ru

1690 ms

A.template_1775beafe1d561b48fa0d0841852fcb8.css,q1719445875343302.pagespeed.cf.nP6MJC7qml.css

530 ms

js

71 ms

api.js

44 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 52% of them (25 requests) were addressed to the original 3z.ru, 8% (4 requests) were made to I.3z.ru and 8% (4 requests) were made to Top-fwz1.mail.ru. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain 3z.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 453.9 kB (22%)

Content Size

2.1 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 3z.ru main page is 2.1 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. 55% of websites need less resources to load. Javascripts take 949.8 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 284.9 kB

  • Original 370.9 kB
  • After minification 367.7 kB
  • After compression 86.0 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 284.9 kB or 77% of the original size.

Image Optimization

-0%

Potential reduce by 24 B

  • Original 486.2 kB
  • After minification 486.1 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. 3Z images are well optimized though.

JavaScript Optimization

-12%

Potential reduce by 110.2 kB

  • Original 949.8 kB
  • After minification 949.8 kB
  • After compression 839.6 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 110.2 kB or 12% of the original size.

CSS Optimization

-21%

Potential reduce by 58.8 kB

  • Original 273.9 kB
  • After minification 273.9 kB
  • After compression 215.1 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. 3z.ru needs all CSS files to be minified and compressed as it can save up to 58.8 kB or 21% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (35%)

Requests Now

43

After Optimization

28

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 3Z. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

3z.ru

3z.ru

540 ms

3z.ru

3z.ru

1690 ms

A.template_1775beafe1d561b48fa0d0841852fcb8.css,q1719445875343302.pagespeed.cf.nP6MJC7qml.css

A.template_1775beafe1d561b48fa0d0841852fcb8.css,q1719445875343302.pagespeed.cf.nP6MJC7qml.css

530 ms

js

js

71 ms

api.js

api.js

44 ms

bundle.js

bundle.js

1392 ms

tag.js

tag.js

902 ms

gtm.js

gtm.js

51 ms

Nx75xwin.png.pagespeed.ic.ZgYY8fkMJQ.png

Nx75xwin.png.pagespeed.ic.ZgYY8fkMJQ.png

140 ms

x11ee3fda9b12ea9171c7daf76fdfcae0.png.pagespeed.ic.kF_Kqfg1l_.png

x11ee3fda9b12ea9171c7daf76fdfcae0.png.pagespeed.ic.kF_Kqfg1l_.png

278 ms

x167a84637c1e1aee21432ba64d756d3b.png.pagespeed.ic.EH0B1QuUPp.png

x167a84637c1e1aee21432ba64d756d3b.png.pagespeed.ic.EH0B1QuUPp.png

520 ms

x817ee349f4c1dc779ec70540be28c140.jpg.pagespeed.ic.qyrHSaq6OB.jpg

x817ee349f4c1dc779ec70540be28c140.jpg.pagespeed.ic.qyrHSaq6OB.jpg

411 ms

arrow.jpg

arrow.jpg

682 ms

eight.jpg

eight.jpg

545 ms

square.jpg

square.jpg

550 ms

heart.jpg

heart.jpg

717 ms

rhombus.jpg

rhombus.jpg

972 ms

arc.jpg

arc.jpg

810 ms

clinic.jpg

clinic.jpg

815 ms

recaptcha__en.js

recaptcha__en.js

52 ms

init.js

init.js

1657 ms

rating_bg.jpg

rating_bg.jpg

1051 ms

xstar.png.pagespeed.ic.oWecSK96NF.png

xstar.png.pagespeed.ic.oWecSK96NF.png

822 ms

loader_4_3hw4e4.js

loader_4_3hw4e4.js

1139 ms

code.js

code.js

782 ms

rtrg

rtrg

473 ms

fbevents.js

fbevents.js

61 ms

Bold.woff

Bold.woff

1165 ms

Regular.woff

Regular.woff

1039 ms

849490758502993

849490758502993

122 ms

sync-loader.js

sync-loader.js

874 ms

counter

counter

248 ms

dyn-goal-config.js

dyn-goal-config.js

258 ms

undefined

undefined

138 ms

f913badb23c43f3d76487b6257d6dbf6.jpg

f913badb23c43f3d76487b6257d6dbf6.jpg

399 ms

a76423cd70b63715f8cfb86b251072ad.jpg

a76423cd70b63715f8cfb86b251072ad.jpg

260 ms

ae082f0732a0d5f6fd57fd04655b9780.jpg

ae082f0732a0d5f6fd57fd04655b9780.jpg

267 ms

5dbb00456c9dc96bc130ffcbd3b13aca.jpg

5dbb00456c9dc96bc130ffcbd3b13aca.jpg

136 ms

c9ec8e21c495e8187d497c74067f2f87.jpg

c9ec8e21c495e8187d497c74067f2f87.jpg

367 ms

advert.gif

advert.gif

584 ms

call.tracker.js

call.tracker.js

306 ms

styles.min.css

styles.min.css

991 ms

script.min.js

script.min.js

1431 ms

sync_cookie_image_decide

sync_cookie_image_decide

145 ms

d_client_new.js

d_client_new.js

561 ms

1

1

145 ms

global_cookie.php

global_cookie.php

141 ms

tracker

tracker

130 ms

Accessibility Review

3z.ru accessibility score

71

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

Best Practices

3z.ru best practices score

75

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

3z.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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    RU

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 3z.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 3z.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

3z.ru

Open Graph description is not detected on the main page of 3Z. 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: