Access dnalab.ru. Центр Молекулярной Генетики: ДНК-диaгнoстика-aнализ ДНК-гeнетическая экспeртиза

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

1/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value710 ms

42/100

30%

CLS (Cumulative Layout Shift)

Value0.083

94/100

15%

TTI (Time to Interactive)

Value9.0 s

34/100

10%

dnalab.ru

591 ms

www.dnalab.ru

1345 ms

jquery-1.12.4.min.js

384 ms

jquery.form.min.js

255 ms

jquery-scrolltofixed-min.js

256 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 60% of them (37 requests) were addressed to the original Dnalab.ru, 8% (5 requests) were made to Google.com and 8% (5 requests) were made to Gstatic.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Dnalab.ru.

Content Size

1.1 MB

After Optimization

865.3 kB

In fact, the total size of Dnalab.ru main page is 1.1 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. Images take 472.3 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 34.4 kB

Original 43.4 kB
After minification 37.5 kB
After compression 9.0 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 5.9 kB, which is 14% 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 34.4 kB or 79% of the original size.

Image Optimization

-28%

Potential reduce by 130.4 kB

Original 472.3 kB
After minification 342.0 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, Dnalab needs image optimization as it can save up to 130.4 kB or 28% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 8.8 kB

Original 457.0 kB
After minification 457.0 kB
After compression 448.3 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.

CSS Optimization

-15%

Potential reduce by 12.0 kB

Original 78.0 kB
After minification 78.0 kB
After compression 66.1 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. Dnalab.ru needs all CSS files to be minified and compressed as it can save up to 12.0 kB or 15% of the original size.

Requests Now

After Optimization

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dnalab. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

[aria-*] attributes do not match their roles

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

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

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

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

ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dnalab.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 Dnalab.ru main page’s claimed encoding is iso-8859-1. 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

dnalab.ru

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

Центр Молекулярной Генетики: ДНК-диaгнoстика-aнализ ДНК-гeнетическая экспeртиза

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

dnalab.ru

www.dnalab.ru

jquery-1.12.4.min.js

jquery.form.min.js

jquery-scrolltofixed-min.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

dnalab.ru

www.dnalab.ru

jquery-1.12.4.min.js

jquery.form.min.js

jquery-scrolltofixed-min.js

script.js

bootstrap.min.css

bootstrap.min.js

BootstrapXL.css

filterable.js

site.css

api.js

urchin.js

cbk.css

cbk.js

background.jpg

logo.png

menu_sprite.png

scope_icon.png

faq_icon.png

covid19.jpg

brain_icon.png

dna_icon.png

edu_icon.png

1_ico.94624fe63df4a50b8cc5256bc99979891.png

2_ico.94624fe63df4a50b8cc5256bc99979891.png

4_ico.94624fe63df4a50b8cc5256bc99979891.png

5_ico.94624fe63df4a50b8cc5256bc99979891.png

3_ico.94624fe63df4a50b8cc5256bc99979891.png

nasled_zab.94624fe63df4a50b8cc5256bc99979891.png

7_ico.94624fe63df4a50b8cc5256bc99979891.png

6_ico.94624fe63df4a50b8cc5256bc99979891.png

8_ico.94624fe63df4a50b8cc5256bc99979891.png

10_ico.94624fe63df4a50b8cc5256bc99979891.png

about_centr_block.png

man_sample.png

site_map.png

vk.png

fb_ico.png

gplus_ico.png

youtube_ico.png

recaptcha__ru.js

hit