Tools & Wizards About Us
sferatb.by screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

sferatb.by

Обучение и подготовка по охране труда в Минске | Услуги в области охраны труда и промышленной безопасности

Page Load Speed

13 sec in total

First Response

455 ms

Resources Loaded

12.2 sec

Page Rendered

356 ms

sferatb.by screenshot

About Website

Visit sferatb.by now to see the best up-to-date Sferatb content for Belarus and also check out these interesting facts you probably never knew about sferatb.by

Услуги по обучению в области охраны труда, промышленной безопасности - повышение квалификации, семинары и тренинги в Минске и других городах РБ. ✔Профессиональный подход ✔Преподаватели с многолетним о...

Visit sferatb.by

Key Findings

We analyzed Sferatb.by page load time and found that the first response time was 455 ms and then it took 12.5 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

sferatb.by performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

6/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

12/100

25%

SI (Speed Index)

Value17.5 s

0/100

10%

TBT (Total Blocking Time)

Value2,020 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0.059

98/100

15%

TTI (Time to Interactive)

Value19.6 s

2/100

10%

Network Requests Diagram

sferatb.by

455 ms

stb.deal.by

1520 ms

adv_teasers.js

257 ms

member.styl.css

685 ms

personal_display_css

625 ms

Our browser made a total of 40 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Sferatb.by, 38% (15 requests) were made to Static-cache.by.uaprom.net and 15% (6 requests) were made to Images.by.prom.st. The less responsive or slowest element that took the longest time to load (8.6 sec) relates to the external source Mc.yandex.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.0 MB (68%)

Content Size

2.9 MB

After Optimization

925.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sferatb.by main page is 2.9 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. Javascripts take 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 84.4 kB

  • Original 108.4 kB
  • After minification 101.9 kB
  • After compression 23.9 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 84.4 kB or 78% of the original size.

Image Optimization

-16%

Potential reduce by 59.3 kB

  • Original 361.2 kB
  • After minification 302.0 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, Sferatb needs image optimization as it can save up to 59.3 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-72%

Potential reduce by 1.4 MB

  • Original 1.9 MB
  • After minification 1.9 MB
  • After compression 534.6 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 1.4 MB or 72% of the original size.

CSS Optimization

-86%

Potential reduce by 408.8 kB

  • Original 473.7 kB
  • After minification 423.3 kB
  • After compression 64.9 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. Sferatb.by needs all CSS files to be minified and compressed as it can save up to 408.8 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (41%)

Requests Now

37

After Optimization

22

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sferatb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sferatb.by

sferatb.by

455 ms

stb.deal.by

stb.deal.by

1520 ms

adv_teasers.js

adv_teasers.js

257 ms

member.styl.css

member.styl.css

685 ms

personal_display_css

personal_display_css

625 ms

commons.js

commons.js

1286 ms

companysite_wp.js

companysite_wp.js

682 ms

46027643_w0_h120_logosfera_3.png

46027643_w0_h120_logosfera_3.png

599 ms

413 ms

49003124_w100_h100_i.jpg25.jpg

49003124_w100_h100_i.jpg25.jpg

263 ms

logo_global-trans-white.png

logo_global-trans-white.png

137 ms

blank.gif

blank.gif

228 ms

facebook_01.png

facebook_01.png

259 ms

odnoklassniki_01.png

odnoklassniki_01.png

261 ms

vkontakte_01.png

vkontakte_01.png

272 ms

17424931_w100_h100_beregite_cheloveka_2.png

17424931_w100_h100_beregite_cheloveka_2.png

422 ms

45818888_w100_h100_17.jpg

45818888_w100_h100_17.jpg

440 ms

48519162_w100_h100_ppb.jpg

48519162_w100_h100_ppb.jpg

430 ms

47596057_w100_h100_309836.jpg

47596057_w100_h100_309836.jpg

439 ms

46521539_w100_h100_2015430094729.jpg

46521539_w100_h100_2015430094729.jpg

452 ms

stylus_member_30f11d9.png

stylus_member_30f11d9.png

540 ms

industry_head_414.jpg

industry_head_414.jpg

475 ms

common_5e0689f.png

common_5e0689f.png

1249 ms

hit;deal_by

hit;deal_by

254 ms

raiting_blue.png

raiting_blue.png

352 ms

logo_micro-trans.png

logo_micro-trans.png

549 ms

bare-legacy.js

bare-legacy.js

378 ms

iframe-legacy.html

iframe-legacy.html

130 ms

hit;deal_by

hit;deal_by

127 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

252 ms

iframe

iframe

252 ms

147755

147755

353 ms

watch.js

watch.js

8639 ms

pixel.gif

pixel.gif

138 ms

postmessageRelay

postmessageRelay

39 ms

3193398744-postmessagerelay.js

3193398744-postmessagerelay.js

28 ms

rpc:shindig_random.js

rpc:shindig_random.js

37 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

3 ms

wormhole_wp.js

wormhole_wp.js

399 ms

activity-c147755.gif

activity-c147755.gif

134 ms

Accessibility Review

sferatb.by accessibility score

66

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.

High

ARIA toggle fields do not have accessible names

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

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

[id] attributes on active, focusable elements are not unique

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

sferatb.by best practices score

75

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

sferatb.by SEO score

97

Search Engine Optimization Advices

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

    UTF-8

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

sferatb.by

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