Access infbu.ru. Информатик БУ - Подготовка к ЕГЭ-2016 по информатике, задания и решения

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

7/100

25%

SI (Speed Index)

Value14.7 s

1/100

10%

TBT (Total Blocking Time)

Value5,720 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value28.6 s

0/100

10%

infbu.ru

616 ms

jquery.js

282 ms

common.js

267 ms

reset.css

276 ms

text.css

277 ms

Our browser made a total of 116 requests to load all elements on the main page. We found that 28% of them (32 requests) were addressed to the original Infbu.ru, 41% (47 requests) were made to St6-21.vk.com and 8% (9 requests) were made to Sun6-22.userapi.com. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source St6-21.vk.com.

Content Size

3.1 MB

After Optimization

2.6 MB

In fact, the total size of Infbu.ru main page is 3.1 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. 60% of websites need less resources to load. Javascripts take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 45.3 kB

Original 55.2 kB
After minification 43.9 kB
After compression 10.0 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 11.3 kB, which is 21% 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 45.3 kB or 82% of the original size.

Image Optimization

-26%

Potential reduce by 56.9 kB

Original 215.6 kB
After minification 158.7 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. Obviously, Infbu needs image optimization as it can save up to 56.9 kB or 26% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-16%

Potential reduce by 377.5 kB

Original 2.3 MB
After minification 2.3 MB
After compression 1.9 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 377.5 kB or 16% of the original size.

CSS Optimization

-14%

Potential reduce by 78.6 kB

Original 554.6 kB
After minification 554.5 kB
After compression 475.9 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. Infbu.ru needs all CSS files to be minified and compressed as it can save up to 78.6 kB or 14% of the original size.

Requests Now

112

After Optimization

The browser has sent 112 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Infbu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 46 to 1 for JavaScripts and from 19 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

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

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

High

Links are not crawlable

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

UTF-8

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

infbu.ru

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

Информатик БУ - Подготовка к ЕГЭ-2016 по информатике, задания и решения

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

infbu.ru

jquery.js

common.js

reset.css

text.css

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

infbu.ru

jquery.js

common.js

reset.css

text.css

960.css

styles.css

jquery.colorbox.js

colorbox.css

init_colorbox.js

t1.js

show_ads.js

openapi.js

top100.jcn

top100.jcn

analytics.js

bg.jpg

headbg.jpg

logo.png

vkbutton_g.png

youtubebutton_g.png

twitterbutton_g.png

key.png

register.png

modtop.jpg

archive.png

pabc_tumb.jpg

pabc2_tumb.jpg

download-button.jpg

py_tumb.jpg

py1_tumb.jpg

kumir_tumb.jpg

kumir1_tumb.jpg

word.png

faq.png

adsbygoogle.js

collect

js

openapi.c340c125c61ec5745ebb2a98626e46ab.js

upload.gif

widget_community.php

icon_top.png

watch.js