Tools & Wizards About Us
otb37.ru screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 25% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

otb37.ru

Учебный центр "Академия Безопасности" проводит обучение по: Пожарная Безопасность (ПТМ), Охрана труда, ГО и ЧС, Оказание первой помощь и другие виды о...

Page Load Speed

7.2 sec in total

First Response

568 ms

Resources Loaded

6.3 sec

Page Rendered

341 ms

otb37.ru screenshot

About Website

Welcome to otb37.ru homepage info - get ready to check Otb 37 best content for Russia right away, or after learning these important things about otb37.ru

Обучение по программам: Пожарно технический минимум (ПТМ), Охрана труда, Гражданская Оборона и Чрезвычайные Ситуации (ГО и ЧС), Повышение квалификации педагогических работников, Правила оказания перво...

Visit otb37.ru

Key Findings

We analyzed Otb37.ru page load time and found that the first response time was 568 ms and then it took 6.6 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

otb37.ru performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value12.8 s

0/100

25%

SI (Speed Index)

Value9.7 s

11/100

10%

TBT (Total Blocking Time)

Value1,820 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value19.6 s

2/100

10%

Network Requests Diagram

otb37.ru

568 ms

ab-dpo.ru

1070 ms

page_702f84578416a458d0fb0eb45e89d0de_v1.css

172 ms

template_a1b747e4cbdb8408a89ffbad72de1f6c_v1.css

307 ms

menu5.png

397 ms

Our browser made a total of 202 requests to load all elements on the main page. We found that 0% of them (1 request) were addressed to the original Otb37.ru, 89% (180 requests) were made to Ab-dpo.ru and 2% (4 requests) were made to Cdn-ru.bitrix24.ru. The less responsive or slowest element that took the longest time to load (2.3 sec) relates to the external source Ab-dpo.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 466.5 kB (18%)

Content Size

2.5 MB

After Optimization

2.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Otb37.ru main page is 2.5 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 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 256.2 kB

  • Original 338.5 kB
  • After minification 324.9 kB
  • After compression 82.3 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 256.2 kB or 76% of the original size.

Image Optimization

-6%

Potential reduce by 64.0 kB

  • Original 1.0 MB
  • After minification 953.3 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. Otb 37 images are well optimized though.

JavaScript Optimization

-11%

Potential reduce by 99.9 kB

  • Original 930.4 kB
  • After minification 930.4 kB
  • After compression 830.5 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 99.9 kB or 11% of the original size.

CSS Optimization

-19%

Potential reduce by 46.3 kB

  • Original 242.1 kB
  • After minification 241.8 kB
  • After compression 195.8 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. Otb37.ru needs all CSS files to be minified and compressed as it can save up to 46.3 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 103 (52%)

Requests Now

198

After Optimization

95

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 198 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Otb 37. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

otb37.ru

otb37.ru

568 ms

ab-dpo.ru

ab-dpo.ru

1070 ms

page_702f84578416a458d0fb0eb45e89d0de_v1.css

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172 ms

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Accessibility Review

otb37.ru accessibility score

58

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 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

High

[aria-*] attributes do not have valid values

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

otb37.ru best practices score

58

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

High

Browser errors were logged to the console

SEO Factors

otb37.ru SEO score

84

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 Otb37.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 Otb37.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

otb37.ru

Open Graph description is not detected on the main page of Otb 37. 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: