Access codingrus.ru. .:: CodingRUS ::. программирование по-русски на Delphi, C++, PHP, Prolog, GPSS

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

98/100

25%

SI (Speed Index)

Value8.4 s

19/100

10%

TBT (Total Blocking Time)

Value2,620 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.098

90/100

15%

TTI (Time to Interactive)

Value29.4 s

0/100

10%

codingrus.ru

1093 ms

styles.css

206 ms

jscript.js

207 ms

aci.js

398 ms

header-bg.png

104 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 25% of them (23 requests) were addressed to the original Codingrus.ru, 47% (43 requests) were made to St6-21.vk.com and 8% (7 requests) were made to Vk.com. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source St6-21.vk.com.

Content Size

2.9 MB

After Optimization

2.4 MB

In fact, the total size of Codingrus.ru 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. 50% of websites need less resources to load. Javascripts take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 88.3 kB

Original 106.7 kB
After minification 105.7 kB
After compression 18.4 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 88.3 kB or 83% of the original size.

Image Optimization

-2%

Potential reduce by 3.3 kB

Original 139.0 kB
After minification 135.8 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. CodingRUS images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 317.9 kB

Original 2.1 MB
After minification 2.1 MB
After compression 1.8 MB

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 317.9 kB or 15% of the original size.

CSS Optimization

-15%

Potential reduce by 79.7 kB

Original 531.4 kB
After minification 528.8 kB
After compression 451.7 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. Codingrus.ru needs all CSS files to be minified and compressed as it can save up to 79.7 kB or 15% of the original size.

Requests Now

After Optimization

The browser has sent 86 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CodingRUS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 38 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

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

High

Links do not have a discernible name

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

High

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

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

High

Browser errors were logged to the console

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

High

robots.txt is not valid

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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 Codingrus.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 Codingrus.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

codingrus.ru

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

Report Summary

Performance

Accessibility

Best Practices

SEO

.:: CodingRUS ::. программирование по-русски на Delphi, C++, PHP, Prolog, GPSS

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

codingrus.ru

styles.css

jscript.js

aci.js

header-bg.png

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

codingrus.ru

styles.css

jscript.js

aci.js

header-bg.png

header-bg-dark.png

logo.jpg

button_background.gif

yellowdot.png

reddot.png

link1.jpg

link2.jpg

link3.jpg

center_panels.png

img1.gif

tabl.png

bullet.gif

news.gif

forum_bg.gif

printer.gif

Huawei_MediaPad.gif

share.js

openapi.js

but-bg2.gif

zp.js

88_31_1.jpg

counter2

openapi.a2ed73393cad04481c1dfb3f7794921f.js

upload.gif

widget_community.php

hit

watch.js

footer-bg.jpg

b-share-icon.png

watch.js

version.js

hit

loader_nav21007247412_3.js

fonts_cnt.c7a76efe.css

lite.ca486089.css

lang3_2.js

polyfills.560a594b.js

vkui.43318ab6.css