Tools & Wizards About Us
info.zrtlab.com screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

info.zrtlab.com

ZRT Laboratory | Innovative Lab Testing Made Simple

Page Load Speed

15.5 sec in total

First Response

6.4 sec

Resources Loaded

8.7 sec

Page Rendered

354 ms

info.zrtlab.com screenshot

About Website

Visit info.zrtlab.com now to see the best up-to-date Info ZRT Lab content for United States and also check out these interesting facts you probably never knew about info.zrtlab.com

ZRT is a CLIA certified diagnostic laboratory dedicated to supporting consumers and healthcare professionals through accurate, convenient lab testing.

Visit info.zrtlab.com

Key Findings

We analyzed Info.zrtlab.com page load time and found that the first response time was 6.4 sec and then it took 9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

info.zrtlab.com performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value16.8 s

0/100

25%

SI (Speed Index)

Value11.6 s

4/100

10%

TBT (Total Blocking Time)

Value850 ms

34/100

30%

CLS (Cumulative Layout Shift)

Value0.441

21/100

15%

TTI (Time to Interactive)

Value16.9 s

5/100

10%

Network Requests Diagram

info.zrtlab.com

6420 ms

info.zrtlab.com

314 ms

www.zrtlab.com

688 ms

css

57 ms

css

75 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Info.zrtlab.com, 64% (41 requests) were made to Zrtlab.com and 5% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (6.4 sec) belongs to the original domain Info.zrtlab.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 246.7 kB (9%)

Content Size

2.7 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Info.zrtlab.com main page is 2.7 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. 55% of websites need less resources to load. Images take 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 62.5 kB

  • Original 70.8 kB
  • After minification 40.4 kB
  • After compression 8.3 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 30.3 kB, which is 43% 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 62.5 kB or 88% of the original size.

Image Optimization

-6%

Potential reduce by 150.5 kB

  • Original 2.4 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. Info ZRT Lab images are well optimized though.

JavaScript Optimization

-17%

Potential reduce by 24.5 kB

  • Original 144.6 kB
  • After minification 144.6 kB
  • After compression 120.1 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 24.5 kB or 17% of the original size.

CSS Optimization

-18%

Potential reduce by 9.2 kB

  • Original 51.3 kB
  • After minification 51.3 kB
  • After compression 42.1 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. Info.zrtlab.com needs all CSS files to be minified and compressed as it can save up to 9.2 kB or 18% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (50%)

Requests Now

58

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Info ZRT Lab. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

info.zrtlab.com

info.zrtlab.com

6420 ms

info.zrtlab.com

info.zrtlab.com

314 ms

www.zrtlab.com

www.zrtlab.com

688 ms

css

css

57 ms

css

css

75 ms

css

css

81 ms

font-awesome.css

font-awesome.css

40 ms

bootstrap.css

bootstrap.css

245 ms

base.css

base.css

333 ms

plugins.css

plugins.css

337 ms

layout.css

layout.css

345 ms

palette.css

palette.css

348 ms

flexbox.css

flexbox.css

344 ms

site.css

site.css

351 ms

jquery-2.1.1.min.js

jquery-2.1.1.min.js

38 ms

modernizr.js

modernizr.js

53 ms

bootstrap.js

bootstrap.js

422 ms

plugins.js

plugins.js

422 ms

slick.min.js

slick.min.js

435 ms

application.js

application.js

433 ms

jquery.validate.min.js

jquery.validate.min.js

437 ms

jquery.validate.unobtrusive.min.js

jquery.validate.unobtrusive.min.js

437 ms

jquery.unobtrusive-ajax.min.js

jquery.unobtrusive-ajax.min.js

508 ms

jquery.endless-scroll.js

jquery.endless-scroll.js

508 ms

jquery.jscroll.js

jquery.jscroll.js

515 ms

js

js

57 ms

446347.js

446347.js

55 ms

gtm.js

gtm.js

69 ms

g1jsfuv65y

g1jsfuv65y

213 ms

blue-seal-120-61-bbb-22014906.png

blue-seal-120-61-bbb-22014906.png

169 ms

icon-search.png

icon-search.png

188 ms

zrt_primary_logo.png

zrt_primary_logo.png

187 ms

lcms-profile-update-homepage-banner-112123-1.png

lcms-profile-update-homepage-banner-112123-1.png

763 ms

covid-research-plus-expanded-nt-homepage-banners_42.jpg

covid-research-plus-expanded-nt-homepage-banners_42.jpg

343 ms

blood-spot-banner-52820.jpg

blood-spot-banner-52820.jpg

504 ms

lcms-profile-update-mobile-hp-banner-112123.png

lcms-profile-update-mobile-hp-banner-112123.png

420 ms

nt-expanded-mobile-banner-4221.png

nt-expanded-mobile-banner-4221.png

523 ms

blood-spot-banner-52820_mobile.png

blood-spot-banner-52820_mobile.png

534 ms

saliva-testing.png

saliva-testing.png

436 ms

blood-spot-testing.png

blood-spot-testing.png

597 ms

dried-urine-testing.png

dried-urine-testing.png

534 ms

serum-testing.png

serum-testing.png

601 ms

dr-pamela-smith-headshot-cropped-2021.jpg

dr-pamela-smith-headshot-cropped-2021.jpg

701 ms

homepage-testimonial-thumb-drlenaedwards.jpg

homepage-testimonial-thumb-drlenaedwards.jpg

624 ms

homepage-testimonial-thumb-jack_monaco_md.jpg

homepage-testimonial-thumb-jack_monaco_md.jpg

632 ms

homepage-testimonial-thumb-jimpaoletti.jpg

homepage-testimonial-thumb-jimpaoletti.jpg

685 ms

pam-smith-hormones101.jpg

pam-smith-hormones101.jpg

692 ms

collect-sample.jpg

collect-sample.jpg

726 ms

zrt_resources.jpg

zrt_resources.jpg

728 ms

446347.js

446347.js

190 ms

fb.js

fb.js

188 ms

446347.js

446347.js

188 ms

125858227

125858227

306 ms

font

font

130 ms

font

font

139 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

105 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

713 ms

graphic-img2.png

graphic-img2.png

723 ms

bg-1.png

bg-1.png

643 ms

pre-footer-bg.png

pre-footer-bg.png

651 ms

social.png

social.png

651 ms

clarity.js

clarity.js

16 ms

api.js

api.js

12 ms

c.gif

c.gif

8 ms

Accessibility Review

info.zrtlab.com accessibility score

64

Accessibility Issues

ARIA

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.

Impact

Issue

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

<frame> or <iframe> elements do not have a title

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

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

info.zrtlab.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

info.zrtlab.com SEO score

84

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

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 Info.zrtlab.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 Info.zrtlab.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

info.zrtlab.com

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