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name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

17/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

40/100

25%

SI (Speed Index)

Value7.5 s

27/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value7.4 s

48/100

10%

microbit.ru

4026 ms

style.css

850 ms

bottom.css

426 ms

jquery.js

1573 ms

jquery.pikachoose.js

861 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 72% of them (43 requests) were addressed to the original Microbit.ru, 7% (4 requests) were made to Mc.yandex.ru and 5% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (4 sec) belongs to the original domain Microbit.ru.

Content Size

598.4 kB

After Optimization

235.8 kB

In fact, the total size of Microbit.ru main page is 598.4 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. 20% of websites need less resources to load. Javascripts take 375.2 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 47.6 kB

Original 57.8 kB
After minification 35.5 kB
After compression 10.2 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. This page needs HTML code to be minified as it can gain 22.2 kB, which is 38% 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 47.6 kB or 82% of the original size.

Image Optimization

-24%

Potential reduce by 26.6 kB

Original 112.2 kB
After minification 85.6 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, Microbit needs image optimization as it can save up to 26.6 kB or 24% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-64%

Potential reduce by 241.8 kB

Original 375.2 kB
After minification 270.8 kB
After compression 133.3 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 241.8 kB or 64% of the original size.

CSS Optimization

-87%

Potential reduce by 46.6 kB

Original 53.3 kB
After minification 43.2 kB
After compression 6.7 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. Microbit.ru needs all CSS files to be minified and compressed as it can save up to 46.6 kB or 87% of the original size.

Requests Now

After Optimization

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Microbit. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts 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

Links do not have a discernible name

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

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

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 Microbit.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 Microbit.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

microbit.ru

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

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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

microbit.ru

style.css

bottom.css

jquery.js

jquery.pikachoose.js

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

microbit.ru

style.css

bottom.css

jquery.js

jquery.pikachoose.js

jquery-ui-1.8.11.custom.css

jquery-ui-1.8.11.custom.min.js

mbscripts.js

begun.js

watch_visor.js

watch_visor.js

bgmb1.jpg

logomb.gif

17let_blue1.gif

ga.js

sync.js

top100.cnt

w1.gif

authorized_title.gif

authorized_telefon.gif

authorized_telefon2.gif

sony_sc.jpg

toshiba_sc.jpg

hp_sc.jpg

lenovo-logo.jpg

fujitsu-siemens_sc.jpg

dell.jpg

iru_logo.jpg

digma.jpg

logo_jetbalance_jb_jbl.jpg

about_us.jpg

our_advantages.jpg

authorized.jpg

vstavka_ico.gif

notebook_upgrade.jpg

battery_not_charging.jpg

picture_problems.jpg

wet_notebook.jpg

physical_damage.jpg

email2.jpg

news.gif

wow2.gif

ar.gif