Access vrnlab.ru. Учебное оборудование, лабораторные стенды, плакаты для ВУЗов, школ, колледжей, учебных заведений

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

21/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

43/100

25%

SI (Speed Index)

Value7.2 s

29/100

10%

TBT (Total Blocking Time)

Value2,440 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value2.005

0/100

15%

TTI (Time to Interactive)

Value8.9 s

34/100

10%

vrnlab.ru

465 ms

www.vrnlab.ru

825 ms

core.min.css

366 ms

popup.min.css

733 ms

styles.css

265 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 75% of them (47 requests) were addressed to the original Vrnlab.ru, 5% (3 requests) were made to Translate.yandex.net and 5% (3 requests) were made to Mc.yandex.ru. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Vrnlab.ru.

Content Size

2.3 MB

After Optimization

1.7 MB

In fact, the total size of Vrnlab.ru main page is 2.3 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. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 43.6 kB

Original 53.5 kB
After minification 48.7 kB
After compression 9.9 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 43.6 kB or 82% of the original size.

Image Optimization

-13%

Potential reduce by 226.0 kB

Original 1.7 MB
After minification 1.5 MB

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, Vrnlab needs image optimization as it can save up to 226.0 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-67%

Potential reduce by 363.1 kB

Original 538.3 kB
After minification 512.8 kB
After compression 175.2 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 363.1 kB or 67% of the original size.

CSS Optimization

-78%

Potential reduce by 30.3 kB

Original 38.7 kB
After minification 36.1 kB
After compression 8.3 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. Vrnlab.ru needs all CSS files to be minified and compressed as it can save up to 30.3 kB or 78% of the original size.

Requests Now

After Optimization

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vrnlab. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 8 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

Links do not have a discernible name

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

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Areas of Improvement

High

Does not use HTTPS

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

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/).

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 Vrnlab.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 Vrnlab.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

vrnlab.ru

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

Учебное оборудование, лабораторные стенды, плакаты для ВУЗов, школ, колледжей, учебных заведений

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

vrnlab.ru

www.vrnlab.ru

core.min.css

popup.min.css

styles.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

vrnlab.ru

www.vrnlab.ru

core.min.css

popup.min.css

styles.css

template_styles.css

core.min.js

core_ajax.min.js

core_window.min.js

common.css

colors.css

jquery-1.7.2.min.js

raphael-min.js

jquery.easing.1.3.js

icarousel.js

scriptjava.js

cartoon_image.js

button_animation.js

widget.js

css

css

ba.js

bk_index.jpg

top_gray_index.png

logo.png

search_key_tr.png

left_bg.png

right_index.png

right_bg.png

bk_middle.jpg

s_elektrotehnika_color.jpg

s_teplotexnika_color.jpg

s_radiotehnika_color.jpg

s_gidravlika_color.jpg

s_gkh_color.jpg

s_avtomatic_color.jpg

s_svjaz_color.jpg

s_mikrotehnika_color.jpg

about.png

catalog.png

new.png

price.png

foto.png