Tools & Wizards About Us
lexscientific.com screenshot

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

lexscientific.com

Home LEX Scientific Inc

Page Load Speed

2 sec in total

First Response

76 ms

Resources Loaded

735 ms

Page Rendered

1.2 sec

lexscientific.com screenshot

About Website

Click here to check amazing LEX Scientific content. Otherwise, check out these important facts you probably never knew about lexscientific.com

LEX Scientific Inc. Laboratory & Consulting offers environmental services for industrial, commercial, residential & institutional clients.

Visit lexscientific.com

Key Findings

We analyzed Lexscientific.com page load time and found that the first response time was 76 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

lexscientific.com performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

82/100

10%

LCP (Largest Contentful Paint)

Value6.2 s

11/100

25%

SI (Speed Index)

Value3.7 s

86/100

10%

TBT (Total Blocking Time)

Value1,410 ms

15/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.2 s

50/100

10%

Network Requests Diagram

lexscientific.com

76 ms

lexscientific.com

189 ms

bootstrap.css

58 ms

bootstrap-xxs.css

77 ms

bootstrap-xl-xxl.css

88 ms

Our browser made a total of 54 requests to load all elements on the main page. We found that 94% of them (51 requests) were addressed to the original Lexscientific.com, 2% (1 request) were made to Googletagmanager.com and 2% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (212 ms) belongs to the original domain Lexscientific.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 83.3 kB (3%)

Content Size

2.4 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lexscientific.com main page is 2.4 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 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 25.9 kB

  • Original 32.3 kB
  • After minification 28.3 kB
  • After compression 6.4 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 4.0 kB, which is 12% 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 25.9 kB or 80% of the original size.

Image Optimization

-1%

Potential reduce by 18.0 kB

  • Original 2.3 MB
  • After minification 2.3 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. LEX Scientific images are well optimized though.

JavaScript Optimization

-26%

Potential reduce by 20.9 kB

  • Original 79.1 kB
  • After minification 79.1 kB
  • After compression 58.3 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 20.9 kB or 26% of the original size.

CSS Optimization

-41%

Potential reduce by 18.5 kB

  • Original 45.5 kB
  • After minification 45.5 kB
  • After compression 27.1 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. Lexscientific.com needs all CSS files to be minified and compressed as it can save up to 18.5 kB or 41% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (25%)

Requests Now

48

After Optimization

36

  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of LEX Scientific. 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 from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lexscientific.com

lexscientific.com

76 ms

lexscientific.com

lexscientific.com

189 ms

bootstrap.css

bootstrap.css

58 ms

bootstrap-xxs.css

bootstrap-xxs.css

77 ms

bootstrap-xl-xxl.css

bootstrap-xl-xxl.css

88 ms

screen.css

screen.css

97 ms

jquery-1.11.2.min.js

jquery-1.11.2.min.js

119 ms

jquery-migrate-1.4.1.js

jquery-migrate-1.4.1.js

101 ms

bootstrap.min.js

bootstrap.min.js

102 ms

js

js

87 ms

header.css

header.css

101 ms

header-menu-builder.js

header-menu-builder.js

106 ms

header-menu-builder-keyboard-control.js

header-menu-builder-keyboard-control.js

114 ms

header-modernizr-custom.js

header-modernizr-custom.js

116 ms

header-menu-builder-initialize.js

header-menu-builder-initialize.js

115 ms

css2

css2

63 ms

leaf-icon.png

leaf-icon.png

34 ms

cart-icon.png

cart-icon.png

36 ms

account-icon.png

account-icon.png

35 ms

white-search-icon.png

white-search-icon.png

35 ms

header-logo.png

header-logo.png

36 ms

home-icon.png

home-icon.png

34 ms

LEX%20CHECK%20RADON%20KIT-7.jpg

LEX%20CHECK%20RADON%20KIT-7.jpg

44 ms

logo.png

logo.png

44 ms

dark-search-icon.png

dark-search-icon.png

44 ms

background.jpg

background.jpg

62 ms

hexagon.png

hexagon.png

42 ms

microscope-icon.png

microscope-icon.png

43 ms

clipboard-icon.png

clipboard-icon.png

62 ms

hexagon-large.png

hexagon-large.png

64 ms

logo.png

logo.png

61 ms

hazard-icon.png

hazard-icon.png

62 ms

house-icon.png

house-icon.png

63 ms

lex_new_website_banner.jpg

lex_new_website_banner.jpg

152 ms

Consult1.jpg

Consult1.jpg

133 ms

green-underline.png

green-underline.png

83 ms

top-edge-shadow.png

top-edge-shadow.png

83 ms

bottom-edge-shadow.png

bottom-edge-shadow.png

84 ms

lab-services-icon.png

lab-services-icon.png

96 ms

consulting-services-icon.png

consulting-services-icon.png

115 ms

radon-services-icon.png

radon-services-icon.png

114 ms

residential-testing-icon.png

residential-testing-icon.png

115 ms

radon2.jpg

radon2.jpg

171 ms

c-g01-eng.jpg

c-g01-eng.jpg

151 ms

ThinkstockPhotos-494883134.jpg

ThinkstockPhotos-494883134.jpg

193 ms

LEX%20CHECK%20RADON%20KIT-10.jpg

LEX%20CHECK%20RADON%20KIT-10.jpg

212 ms

NewGreenBar.png

NewGreenBar.png

148 ms

131787_C0048624-Asbestos_SEM-SPL.jpg

131787_C0048624-Asbestos_SEM-SPL.jpg

184 ms

contact-us-panel-background.jpg

contact-us-panel-background.jpg

167 ms

footer-logo.png

footer-logo.png

171 ms

Lato-Regular-webfont.woff

Lato-Regular-webfont.woff

160 ms

Lato-Bold-webfont.woff

Lato-Bold-webfont.woff

167 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Ew9.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Ew9.woff

22 ms

Lato-Black.woff

Lato-Black.woff

184 ms

Accessibility Review

lexscientific.com accessibility score

86

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Best Practices

lexscientific.com best practices score

75

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

lexscientific.com SEO score

77

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

lexscientific.com

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