Tools & Wizards About Us

Report Summary

  • 39

    Performance

    Renders faster than
    58% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

acmp.ru

Школа программиста

Page Load Speed

3.4 sec in total

First Response

495 ms

Resources Loaded

2.8 sec

Page Rendered

111 ms

About Website

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

Олимпиады по информатике. Новости, задачи, решения. Автоматическая система проверки.

Visit acmp.ru

Key Findings

We analyzed Acmp.ru page load time and found that the first response time was 495 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

acmp.ru performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

84/100

10%

LCP (Largest Contentful Paint)

Value12.5 s

0/100

25%

SI (Speed Index)

Value7.9 s

23/100

10%

TBT (Total Blocking Time)

Value770 ms

38/100

30%

CLS (Cumulative Layout Shift)

Value0.036

100/100

15%

TTI (Time to Interactive)

Value11.0 s

21/100

10%

Network Requests Diagram

acmp.ru

495 ms

acmp.ru

828 ms

tag.js

884 ms

context.js

937 ms

hit

539 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 70% of them (14 requests) were addressed to the original Acmp.ru, 10% (2 requests) were made to Counter.yadro.ru and 5% (1 request) were made to Mc.yandex.ru. The less responsive or slowest element that took the longest time to load (937 ms) relates to the external source Yandex.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 30.1 kB (21%)

Content Size

140.5 kB

After Optimization

110.3 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Acmp.ru main page is 140.5 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 10% of websites need less resources to load. Javascripts take 94.1 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 30.1 kB

  • Original 38.4 kB
  • After minification 36.7 kB
  • After compression 8.2 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 30.1 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 3 B

  • Original 8.0 kB
  • After minification 8.0 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. Acmp images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 94.1 kB
  • After minification 94.1 kB
  • After compression 94.1 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 12 (67%)

Requests Now

18

After Optimization

6

  • Images
  • JavaScript

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Acmp. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

acmp.ru accessibility score

59

Accessibility Issues

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

Form elements do not have associated labels

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

acmp.ru best practices score

67

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

SEO Factors

acmp.ru SEO score

85

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

    N/A

  • Encoding

    WINDOWS-1251

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

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