Tools & Wizards About Us
bioclass.ru screenshot

Report Summary

  • 82

    Performance

    Renders faster than
    87% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

bioclass.ru

Биокласс Московской школы на Юго-Западе №1543 - Биокласс Московской школы

Page Load Speed

5.9 sec in total

First Response

510 ms

Resources Loaded

3.6 sec

Page Rendered

1.8 sec

bioclass.ru screenshot

About Website

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

Ñàéò áèîëîãè÷åñêîãî îòäåëåíèÿ Ìîñêîâñêîé ãèìíàçèè íà Þãî–Çàïàäå ¹1543.

Visit bioclass.ru

Key Findings

We analyzed Bioclass.ru page load time and found that the first response time was 510 ms and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

bioclass.ru performance score

82

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

85/100

25%

SI (Speed Index)

Value5.3 s

59/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.6 s

91/100

10%

Network Requests Diagram

bioclass.ru

510 ms

www.bioclass.ru

1650 ms

stl.css

409 ms

logo-sp.gif

284 ms

kirgiz.jpg

529 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that 91% of them (20 requests) were addressed to the original Bioclass.ru, 9% (2 requests) were made to Ashipunov.info. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Bioclass.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 245.7 kB (11%)

Content Size

2.2 MB

After Optimization

1.9 MB

  • HTML
  • Images
  • CSS

In fact, the total size of Bioclass.ru main page is 2.2 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. 15% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 102.1 kB

  • Original 131.1 kB
  • After minification 130.1 kB
  • After compression 28.9 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 102.1 kB or 78% of the original size.

Image Optimization

-7%

Potential reduce by 138.8 kB

  • Original 2.0 MB
  • After minification 1.9 MB

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. Bioclass images are well optimized though.

CSS Optimization

-81%

Potential reduce by 4.8 kB

  • Original 5.9 kB
  • After minification 5.2 kB
  • After compression 1.1 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. Bioclass.ru needs all CSS files to be minified and compressed as it can save up to 4.8 kB or 81% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

20

After Optimization

20

  • Images
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bioclass. According to our analytics all requests are already optimized.

Network Requests Diagram

bioclass.ru

bioclass.ru

510 ms

www.bioclass.ru

www.bioclass.ru

1650 ms

stl.css

stl.css

409 ms

logo-sp.gif

logo-sp.gif

284 ms

kirgiz.jpg

kirgiz.jpg

529 ms

arr-main.gif

arr-main.gif

149 ms

arr-closed.gif

arr-closed.gif

146 ms

bioclass25.jpeg

bioclass25.jpeg

1080 ms

bering.jpg

bering.jpg

957 ms

1992.jpg

1992.jpg

1030 ms

petrov15.jpg

petrov15.jpg

1108 ms

eskov15.jpg

eskov15.jpg

967 ms

histecol.jpg

histecol.jpg

1677 ms

galich.jpg

galich.jpg

1362 ms

bard.jpg

bard.jpg

366 ms

t_short.jpg

t_short.jpg

1135 ms

futbol.jpg

futbol.jpg

1060 ms

msu.jpg

msu.jpg

1035 ms

exams.jpg

exams.jpg

1034 ms

wikipedia.jpg

wikipedia.jpg

1086 ms

darwin.jpg

darwin.jpg

1286 ms

pcr-cover.jpg

pcr-cover.jpg

1179 ms

Accessibility Review

bioclass.ru accessibility score

77

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

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.

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

bioclass.ru 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

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

bioclass.ru SEO score

93

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

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 Bioclass.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 Bioclass.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

bioclass.ru

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