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name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value3.4 s

65/100

25%

SI (Speed Index)

Value4.0 s

81/100

10%

TBT (Total Blocking Time)

Value320 ms

76/100

30%

CLS (Cumulative Layout Shift)

Value0.405

24/100

15%

TTI (Time to Interactive)

Value3.6 s

91/100

10%

prelax.ru

510 ms

www.prelax.ru

872 ms

jquery-1.7.1.min.js

376 ms

application.js

244 ms

counter_cv.js

642 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that 75% of them (53 requests) were addressed to the original Prelax.ru, 6% (4 requests) were made to Google-analytics.com and 6% (4 requests) were made to Mc.yandex.ru. The less responsive or slowest element that took the longest time to load (8.6 sec) belongs to the original domain Prelax.ru.

Content Size

496.9 kB

After Optimization

292.5 kB

In fact, the total size of Prelax.ru main page is 496.9 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. 25% of websites need less resources to load. Javascripts take 208.2 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 78.2 kB

Original 92.5 kB
After minification 60.7 kB
After compression 14.3 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 31.7 kB, which is 34% 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 78.2 kB or 85% of the original size.

Image Optimization

-8%

Potential reduce by 16.4 kB

Original 196.2 kB
After minification 179.8 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. Prelax images are well optimized though.

JavaScript Optimization

-53%

Potential reduce by 109.8 kB

Original 208.2 kB
After minification 207.6 kB
After compression 98.4 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 109.8 kB or 53% of the original size.

Requests Now

After Optimization

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Prelax. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 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

Serves images with low resolution

Low

Detected JavaScript libraries

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

WINDOWS-1251

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

prelax.ru

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

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

prelax.ru

www.prelax.ru

jquery-1.7.1.min.js

application.js

counter_cv.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

prelax.ru

www.prelax.ru

jquery-1.7.1.min.js

application.js

counter_cv.js

top100.cnt

banner-88x31-rambler-blue3.gif

spacer.gif

top_toilet.jpg

top_toil_32.jpg

top_slogan.gif

ico-tw.png

ico-vk.png

ico-fb.png

top_prelax.png

top_pechat.gif

prelax.jpg

left-button.png

cen_top.jpg

prelaks__49.jpg

prelaks__41.jpg

prelaks__46.jpg

prelaks__51.jpg

prelaks__50.jpg

prelaks__52.jpg

prelaks__44.jpg

prelaks__43.jpg

prelaks__42.jpg

prelaks__53.jpg

ikonka_203.jpg

btm_menu_shadow_r1.jpg

btm_menu_shadow_l2.jpg

btm_menu_1.jpg

btm_menu_2.jpg

btm_menu_3.jpg

btm_menu_shadow_r2.jpg

felicata_logo.gif

spyk-logo.png

bot_block.gif

bot_right.jpg

gtm.js

bessh1.jpg

top_bg1.jpg

top_bg2.jpg

ga.js