Tools & Wizards About Us
td-school.com screenshot

Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

td-school.com

Учебное оборудование и учебно-наглядные пособия :: Школьный мир

Page Load Speed

3.7 sec in total

First Response

868 ms

Resources Loaded

2.5 sec

Page Rendered

346 ms

td-school.com screenshot

About Website

Click here to check amazing Td School content. Otherwise, check out these important facts you probably never knew about td-school.com

Комплексное оснащение школьных кабинетов учебным оборудованием и учебно-наглядными пособиями. Оформление кабинетов физики, химии, биологии, ОБЖ. Комплектация школ современным лабораторным оборудование...

Visit td-school.com

Key Findings

We analyzed Td-school.com page load time and found that the first response time was 868 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

td-school.com performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

42/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value6.4 s

40/100

10%

TBT (Total Blocking Time)

Value240 ms

85/100

30%

CLS (Cumulative Layout Shift)

Value0.532

14/100

15%

TTI (Time to Interactive)

Value7.5 s

47/100

10%

Network Requests Diagram

td-school.com

868 ms

bootstrap.css

264 ms

main.css

291 ms

animate.css

304 ms

jquery-1.11.0.js

560 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 85% of them (41 requests) were addressed to the original Td-school.com, 4% (2 requests) were made to Counter.rambler.ru and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Td-school.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 242.0 kB (5%)

Content Size

4.4 MB

After Optimization

4.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Td-school.com main page is 4.4 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. Images take 4.2 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 56.0 kB

  • Original 67.9 kB
  • After minification 47.9 kB
  • After compression 11.8 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. This page needs HTML code to be minified as it can gain 19.9 kB, which is 29% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 56.0 kB or 83% of the original size.

Image Optimization

-3%

Potential reduce by 122.4 kB

  • Original 4.2 MB
  • After minification 4.0 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. Td School images are well optimized though.

JavaScript Optimization

-39%

Potential reduce by 59.8 kB

  • Original 154.6 kB
  • After minification 151.4 kB
  • After compression 94.8 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 59.8 kB or 39% of the original size.

CSS Optimization

-10%

Potential reduce by 3.8 kB

  • Original 37.9 kB
  • After minification 37.9 kB
  • After compression 34.2 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. Td-school.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 17 (40%)

Requests Now

42

After Optimization

25

  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Td School. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

td-school.com

td-school.com

868 ms

bootstrap.css

bootstrap.css

264 ms

main.css

main.css

291 ms

animate.css

animate.css

304 ms

jquery-1.11.0.js

jquery-1.11.0.js

560 ms

jquery-migrate-1.1.0.js

jquery-migrate-1.1.0.js

303 ms

jquery.socializer.js

jquery.socializer.js

358 ms

jquery.prettyPhoto.js

jquery.prettyPhoto.js

400 ms

jquery.validate.js

jquery.validate.js

548 ms

easypaginate.js

easypaginate.js

438 ms

styleswitch.js

styleswitch.js

440 ms

jquery.cookie.js

jquery.cookie.js

521 ms

prettyPhoto.css

prettyPhoto.css

536 ms

font-awesome.min.css

font-awesome.min.css

586 ms

bootstrap.js

bootstrap.js

589 ms

bootstrap-hover-dropdown.js

bootstrap-hover-dropdown.js

693 ms

watch.js

watch.js

1 ms

js

js

81 ms

top100.jcn

top100.jcn

375 ms

docs.min.js

docs.min.js

554 ms

cookie_basket.js

cookie_basket.js

557 ms

top100.jcn

top100.jcn

889 ms

logo.png

logo.png

188 ms

online1.gif

online1.gif

190 ms

fon__.jpg

fon__.jpg

393 ms

IS3.JPG

IS3.JPG

516 ms

SOSh_830-3.JPG

SOSh_830-3.JPG

781 ms

d6cf4ce4e5453454c7e55235d960b5411549536548.jpg

d6cf4ce4e5453454c7e55235d960b5411549536548.jpg

190 ms

photo_77650-700_22.jpg

photo_77650-700_22.jpg

397 ms

1486135858.jpg

1486135858.jpg

399 ms

shippingBG-770x470.jpg

shippingBG-770x470.jpg

492 ms

2.jpg

2.jpg

656 ms

Izobrazhenie_174.jpg

Izobrazhenie_174.jpg

660 ms

copy1594016808-SOSh_830-3.JPG

copy1594016808-SOSh_830-3.JPG

817 ms

fgos-programmy.jpg

fgos-programmy.jpg

1080 ms

sertification.jpg

sertification.jpg

651 ms

shkola.jpg

shkola.jpg

782 ms

b4c1f7e49e76c60b594c496b71270456.jpg

b4c1f7e49e76c60b594c496b71270456.jpg

916 ms

2f3f6a725022e4a843703d8418368b0b1539949149.png

2f3f6a725022e4a843703d8418368b0b1539949149.png

794 ms

17036650_182766575555233_1575598613_o.jpg

17036650_182766575555233_1575598613_o.jpg

919 ms

excel-xls-icon.png

excel-xls-icon.png

913 ms

ico-1521709945_Fiziologija__s_zaschitoj_.jpg

ico-1521709945_Fiziologija__s_zaschitoj_.jpg

932 ms

ga.js

ga.js

9 ms

moscow_spring_o.jpg

moscow_spring_o.jpg

944 ms

__utm.gif

__utm.gif

62 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

922 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

928 ms

counter2

counter2

287 ms

Accessibility Review

td-school.com accessibility score

61

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 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

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

td-school.com 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

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

td-school.com SEO score

90

Search Engine Optimization Advices

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

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Td-school.com 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 Td-school.com 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

td-school.com

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