Tools & Wizards About Us
lenreactiv.ru screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

lenreactiv.ru

Оптовая и розничная продажа химических реактивов, лабораторной посуды и оборудования

Page Load Speed

3.7 sec in total

First Response

388 ms

Resources Loaded

3.2 sec

Page Rendered

137 ms

lenreactiv.ru screenshot

About Website

Visit lenreactiv.ru now to see the best up-to-date Lenreactiv content for Russia and also check out these interesting facts you probably never knew about lenreactiv.ru

Химические реактивы, промышленная химия, лабораторная посуда, лабораторная мебель, лабораторное оборудование и приборы

Visit lenreactiv.ru

Key Findings

We analyzed Lenreactiv.ru page load time and found that the first response time was 388 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

lenreactiv.ru performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value9.7 s

10/100

10%

TBT (Total Blocking Time)

Value250 ms

84/100

30%

CLS (Cumulative Layout Shift)

Value0.151

75/100

15%

TTI (Time to Interactive)

Value12.6 s

14/100

10%

Network Requests Diagram

lenreactiv.ru

388 ms

lenreactiv.ru

947 ms

style9.css

125 ms

l_style.css

247 ms

footable.standalone.min.css

362 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 88% of them (46 requests) were addressed to the original Lenreactiv.ru, 2% (1 request) were made to Googletagmanager.com and 2% (1 request) were made to Cdn.jsdelivr.net. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Lenreactiv.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 343.3 kB (21%)

Content Size

1.7 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lenreactiv.ru main page is 1.7 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. 35% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 25.3 kB

  • Original 34.1 kB
  • After minification 33.9 kB
  • After compression 8.9 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 25.3 kB or 74% of the original size.

Image Optimization

-19%

Potential reduce by 293.2 kB

  • Original 1.5 MB
  • After minification 1.2 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, Lenreactiv needs image optimization as it can save up to 293.2 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-12%

Potential reduce by 12.7 kB

  • Original 107.5 kB
  • After minification 107.5 kB
  • After compression 94.8 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 12.7 kB or 12% of the original size.

CSS Optimization

-56%

Potential reduce by 12.1 kB

  • Original 21.9 kB
  • After minification 10.7 kB
  • After compression 9.7 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. Lenreactiv.ru needs all CSS files to be minified and compressed as it can save up to 12.1 kB or 56% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (47%)

Requests Now

49

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lenreactiv. 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 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lenreactiv.ru

lenreactiv.ru

388 ms

lenreactiv.ru

lenreactiv.ru

947 ms

style9.css

style9.css

125 ms

l_style.css

l_style.css

247 ms

footable.standalone.min.css

footable.standalone.min.css

362 ms

FooTable.FontAwesome.css

FooTable.FontAwesome.css

363 ms

FooTable.Glyphicons.css

FooTable.Glyphicons.css

365 ms

simpleSlider.css

simpleSlider.css

367 ms

jquery.mCustomScrollbar.min.css

jquery.mCustomScrollbar.min.css

368 ms

jquery.min.js

jquery.min.js

492 ms

moment.js

moment.js

620 ms

bPopup.js

bPopup.js

481 ms

default2.js

default2.js

487 ms

app.js

app.js

488 ms

slider.css

slider.css

486 ms

slider.js

slider.js

600 ms

lightzoom.js

lightzoom.js

607 ms

footable.min.js

footable.min.js

732 ms

js

js

58 ms

form.js

form.js

608 ms

jquery.maskedinput.min.js

jquery.maskedinput.min.js

45 ms

jquery.mCustomScrollbar.concat.min.js

jquery.mCustomScrollbar.concat.min.js

614 ms

pass-button.js

pass-button.js

718 ms

simpleSlider.js

simpleSlider.js

726 ms

index.js

index.js

727 ms

css

css

28 ms

3_0_FFCC99FF_FFCC99FF_0_pageviews

3_0_FFCC99FF_FFCC99FF_0_pageviews

603 ms

top-logo.png

top-logo.png

124 ms

banner_rasprodazha_natrij_gidrookis_png.png

banner_rasprodazha_natrij_gidrookis_png.png

733 ms

banner_kompleksnoe_osnawenie_png.png

banner_kompleksnoe_osnawenie_png.png

1144 ms

banner_indikatory_i_krasiteli_png.png

banner_indikatory_i_krasiteli_png.png

852 ms

banner_standart-titry_png.png

banner_standart-titry_png.png

982 ms

icon_0.png

icon_0.png

123 ms

icon_1.png

icon_1.png

244 ms

icon_2.png

icon_2.png

245 ms

icon_3.png

icon_3.png

366 ms

icon_5.png

icon_5.png

367 ms

icon_4.png

icon_4.png

488 ms

icon_6.png

icon_6.png

488 ms

icon_7.png

icon_7.png

608 ms

logo-fck.jpg

logo-fck.jpg

731 ms

iso%209001.jpg

iso%209001.jpg

730 ms

astgoz.jpg

astgoz.jpg

851 ms

za-chestnyj-biznes-100h100.png

za-chestnyj-biznes-100h100.png

852 ms

vk.png

vk.png

853 ms

youtube.png

youtube.png

978 ms

watch.js

watch.js

8 ms

reactive-sprite.png

reactive-sprite.png

958 ms

Search30.png

Search30.png

957 ms

grey-cross.png

grey-cross.png

958 ms

init.js

init.js

913 ms

auth_correct.php

auth_correct.php

1092 ms

Accessibility Review

lenreactiv.ru accessibility score

71

Accessibility Issues

Names and labels

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.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

lenreactiv.ru best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

lenreactiv.ru SEO score

89

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    RU

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lenreactiv.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it matches the claimed language. Our system also found out that Lenreactiv.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

lenreactiv.ru

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