Access redcenter.ru. REDCENTER - курсы Oracle Hardware (Sun Microsystems), Cisco, VERITAS, IBM, курсы Microsoft, дистанци...

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

32/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.4 s

48/100

10%

redcenter.ru

1144 ms

styles_2.css

299 ms

menus.js

301 ms

redcenter.ru

887 ms

redcenter.ru

741 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 81% of them (54 requests) were addressed to the original Redcenter.ru, 9% (6 requests) were made to Counter.yadro.ru and 6% (4 requests) were made to Mc.yandex.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Redcenter.ru.

Content Size

311.6 kB

After Optimization

191.9 kB

In fact, the total size of Redcenter.ru main page is 311.6 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. 40% of websites need less resources to load. HTML takes 128.1 kB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 117.0 kB

Original 128.1 kB
After minification 127.3 kB
After compression 11.2 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 117.0 kB or 91% of the original size.

Image Optimization

-3%

Potential reduce by 2.8 kB

Original 98.1 kB
After minification 95.4 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. REDCENTER images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

Original 85.3 kB
After minification 85.3 kB
After compression 85.3 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 Now

After Optimization

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of REDCENTER. 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.

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 interpretation of your content by users in different locales.

High

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

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

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

KOI8-R

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Redcenter.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 Redcenter.ru main page’s claimed encoding is koi8-r. 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

redcenter.ru

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

REDCENTER - курсы Oracle Hardware (Sun Microsystems), Cisco, VERITAS, IBM, курсы Microsoft, дистанционное обучение персонала

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

redcenter.ru

styles_2.css

menus.js

redcenter.ru

redcenter.ru

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

redcenter.ru

styles_2.css

menus.js

redcenter.ru

redcenter.ru

redcenter.ru

watch.js

redcenter.ru

newheader01.jpg

tr.gif

newuppermenubullet.gif

newmiddlemenubullet.gif

ll.gif

sbaton.gif

-did-2580.jpg

doorway_bullet_red.gif

rp-1.gif

rp-2.gif

rp-3.gif

-did-2526.jpg

rp-4.gif

rp-5.gif

-did-2713.jpg

rl.gif

foot-end0.gif

foot-end.gif

menu01.gif

menu03.gif

bul.jpg

emp.jpg

arr.jpg

menu06.gif

hit

menu08.gif

newheader02.jpg

tag.js

hit

redcenter.ru

redcenter.ru

redcenter.ru

redcenter.ru

redcenter.ru

redcenter.ru

hit