Tools & Wizards About Us
usdtl.com screenshot

Report Summary

  • 49

    Performance

    Renders faster than
    67% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

usdtl.com

Home - United States Drug Testing Laboratories Inc.

Page Load Speed

780 ms in total

First Response

43 ms

Resources Loaded

489 ms

Page Rendered

248 ms

usdtl.com screenshot

About Website

Welcome to usdtl.com homepage info - get ready to check Usdtl best content for United States right away, or after learning these important things about usdtl.com

The Official Site of USDTL - We unite the best science available with state-of-the-art technology to bring you the most reliable and valid...

Visit usdtl.com

Key Findings

We analyzed Usdtl.com page load time and found that the first response time was 43 ms and then it took 737 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

usdtl.com performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value17.2 s

0/100

25%

SI (Speed Index)

Value9.1 s

14/100

10%

TBT (Total Blocking Time)

Value230 ms

86/100

30%

CLS (Cumulative Layout Shift)

Value0.106

88/100

15%

TTI (Time to Interactive)

Value10.9 s

21/100

10%

Network Requests Diagram

usdtl.com

43 ms

www.usdtl.com

42 ms

css

133 ms

style.css

6 ms

jquery.min.js

26 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 56% of them (23 requests) were addressed to the original Usdtl.com, 12% (5 requests) were made to Fonts.gstatic.com and 10% (4 requests) were made to I.ytimg.com. The less responsive or slowest element that took the longest time to load (261 ms) relates to the external source Chimpstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 77.8 kB (2%)

Content Size

3.5 MB

After Optimization

3.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Usdtl.com main page is 3.5 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. 65% of websites need less resources to load. Images take 3.4 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 40.0 kB

  • Original 49.2 kB
  • After minification 41.0 kB
  • After compression 9.2 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 8.2 kB, which is 17% 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 40.0 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 15.9 kB

  • Original 3.4 MB
  • After minification 3.3 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. Usdtl images are well optimized though.

JavaScript Optimization

-11%

Potential reduce by 11.5 kB

  • Original 106.1 kB
  • After minification 106.0 kB
  • After compression 94.5 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 11.5 kB or 11% of the original size.

CSS Optimization

-33%

Potential reduce by 10.4 kB

  • Original 31.1 kB
  • After minification 31.1 kB
  • After compression 20.7 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. Usdtl.com needs all CSS files to be minified and compressed as it can save up to 10.4 kB or 33% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (27%)

Requests Now

33

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Usdtl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

usdtl.com

usdtl.com

43 ms

www.usdtl.com

www.usdtl.com

42 ms

css

css

133 ms

style.css

style.css

6 ms

jquery.min.js

jquery.min.js

26 ms

ad-google-analytics-public.js

ad-google-analytics-public.js

12 ms

js

js

141 ms

js

js

179 ms

extras.js

extras.js

17 ms

scripts.js

scripts.js

17 ms

229

229

239 ms

dc4541d8057450433f828edc6.js

dc4541d8057450433f828edc6.js

261 ms

bg.png

bg.png

99 ms

hqdefault.jpg

hqdefault.jpg

123 ms

insight.min.js

insight.min.js

150 ms

Cannabidiol-Slider-22009054.jpg

Cannabidiol-Slider-22009054.jpg

66 ms

Join-us-for-our-Virtual-Event-GIF-1.png

Join-us-for-our-Virtual-Event-GIF-1.png

71 ms

Xylazine-Slider.jpg

Xylazine-Slider.jpg

42 ms

slider-mec-fen-opt-min.jpg

slider-mec-fen-opt-min.jpg

67 ms

website-slider.jpg

website-slider.jpg

60 ms

kratom-slider.jpg

kratom-slider.jpg

71 ms

Slider-Mec-Fen.jpg

Slider-Mec-Fen.jpg

72 ms

suggest-a-test-slider.jpg

suggest-a-test-slider.jpg

79 ms

slider-b2b-opt-min.jpg

slider-b2b-opt-min.jpg

77 ms

usdtl-logo2.jpg

usdtl-logo2.jpg

72 ms

NeoTox-v10i1-378x490.png

NeoTox-v10i1-378x490.png

77 ms

Substancev10i1-380x490.png

Substancev10i1-380x490.png

89 ms

Upcoming_Events.jpg

Upcoming_Events.jpg

79 ms

logo-white.png

logo-white.png

78 ms

hqdefault.jpg

hqdefault.jpg

46 ms

hqdefault.jpg

hqdefault.jpg

59 ms

hqdefault.jpg

hqdefault.jpg

66 ms

fontawesome-webfont.svg

fontawesome-webfont.svg

83 ms

4iCs6KVjbNBYlgoKfw7z.ttf

4iCs6KVjbNBYlgoKfw7z.ttf

65 ms

4iCv6KVjbNBYlgoC1CzjsGyI.ttf

4iCv6KVjbNBYlgoC1CzjsGyI.ttf

72 ms

4iCv6KVjbNBYlgoCxCvjsGyI.ttf

4iCv6KVjbNBYlgoCxCvjsGyI.ttf

79 ms

insight_tag_errors.gif

insight_tag_errors.gif

113 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM73w5aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM73w5aX8.ttf

6 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aX8.ttf

6 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

3 ms

conversion_async.js

conversion_async.js

102 ms

Accessibility Review

usdtl.com accessibility score

84

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.

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

Links do not have a discernible name

Tables and lists

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

Impact

Issue

High

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

Best Practices

usdtl.com best practices score

67

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

SEO Factors

usdtl.com 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

Links do not have descriptive text

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

usdtl.com

Open Graph data is detected on the main page of Usdtl. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: