Tools & Wizards About Us
robertsonlighting.com screenshot

Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 79% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

robertsonlighting.com

Robertson Worldwide: UV Drivers | UV Germicidal Ballast | Magnetic Ballast | Fluorescent Ballast

Page Load Speed

726 ms in total

First Response

34 ms

Resources Loaded

614 ms

Page Rendered

78 ms

robertsonlighting.com screenshot

About Website

Welcome to robertsonlighting.com homepage info - get ready to check Robertson Lighting best content right away, or after learning these important things about robertsonlighting.com

Robertson Worldwide is the industry's leading manufacturer of UV Drivers, UV Ballast, Magnetic Ballast, Fluorescent Ballast and HID lighting Ballast. We provide customers with High-quality and Cu...

Visit robertsonlighting.com

Key Findings

We analyzed Robertsonlighting.com page load time and found that the first response time was 34 ms and then it took 692 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

robertsonlighting.com performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

34/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value4.1 s

79/100

10%

TBT (Total Blocking Time)

Value910 ms

31/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value8.6 s

37/100

10%

Network Requests Diagram

robertsonlighting.com

34 ms

www.robertsonuvballast.com

298 ms

gtm.js

88 ms

def12d5c2c10e3e33aa3200a143c.gz.css

50 ms

modernizr.js

87 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Robertsonlighting.com, 48% (16 requests) were made to D163axztg8am2h.cloudfront.net and 15% (5 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (298 ms) relates to the external source Robertsonuvballast.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 53.8 kB (25%)

Content Size

213.5 kB

After Optimization

159.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Robertsonlighting.com main page is 213.5 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. 45% of websites need less resources to load. Javascripts take 82.5 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 51.8 kB

  • Original 67.9 kB
  • After minification 63.2 kB
  • After compression 16.1 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 51.8 kB or 76% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 7.5 kB
  • After minification 7.5 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. Robertson Lighting images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 2.0 kB

  • Original 82.5 kB
  • After minification 82.3 kB
  • After compression 80.5 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 55.6 kB
  • After minification 55.6 kB
  • After compression 55.6 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. Robertsonlighting.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 16 (64%)

Requests Now

25

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Robertson Lighting. 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

robertsonlighting.com

robertsonlighting.com

34 ms

www.robertsonuvballast.com

www.robertsonuvballast.com

298 ms

gtm.js

gtm.js

88 ms

def12d5c2c10e3e33aa3200a143c.gz.css

def12d5c2c10e3e33aa3200a143c.gz.css

50 ms

modernizr.js

modernizr.js

87 ms

common.js

common.js

135 ms

jquery.min.js

jquery.min.js

77 ms

c94be8523869f7ea88176abe9550.gz.js

c94be8523869f7ea88176abe9550.gz.js

74 ms

matchheight.js

matchheight.js

200 ms

reset-min.css

reset-min.css

102 ms

satellite-min.css

satellite-min.css

131 ms

algoliasearch-lite.umd.js

algoliasearch-lite.umd.js

193 ms

instantsearch.production.min.js

instantsearch.production.min.js

196 ms

css2

css2

72 ms

6e4aadb2ee1c07c6eb0f4f85e27a.png

6e4aadb2ee1c07c6eb0f4f85e27a.png

64 ms

96b5de37843bb6699e6f205f8ec4.webp

96b5de37843bb6699e6f205f8ec4.webp

9 ms

780b8ccedb7d72733e1aae9c7709.png

780b8ccedb7d72733e1aae9c7709.png

9 ms

4f97a5473cde2099ae92472b2ae6.webp

4f97a5473cde2099ae92472b2ae6.webp

12 ms

63b125a824d1b6891072c4ed97c2.webp

63b125a824d1b6891072c4ed97c2.webp

11 ms

c26f73f9ac11de9f9fdf35ba48dd.webp

c26f73f9ac11de9f9fdf35ba48dd.webp

21 ms

268236e9309ee228857be2e66f6a.webp

268236e9309ee228857be2e66f6a.webp

22 ms

fa9db93978a3701bb4796983e920.webp

fa9db93978a3701bb4796983e920.webp

22 ms

433ae967898f2d0e3eb6abc63f8c.webp

433ae967898f2d0e3eb6abc63f8c.webp

22 ms

fe02ca129a06af47179511706703.webp

fe02ca129a06af47179511706703.webp

21 ms

f439df0be950b20ee7053601c769.webp

f439df0be950b20ee7053601c769.webp

16 ms

174198af7abce6cce302b7abc286.webp

174198af7abce6cce302b7abc286.webp

22 ms

8a7335aeb91b6d59e90fbef5c1bd.webp

8a7335aeb91b6d59e90fbef5c1bd.webp

85 ms

KFOmCnqEu92Fr1Me5Q.ttf

KFOmCnqEu92Fr1Me5Q.ttf

88 ms

KFOlCnqEu92Fr1MmEU9vAw.ttf

KFOlCnqEu92Fr1MmEU9vAw.ttf

93 ms

KFOlCnqEu92Fr1MmSU5vAw.ttf

KFOlCnqEu92Fr1MmSU5vAw.ttf

107 ms

KFOlCnqEu92Fr1MmWUlvAw.ttf

KFOlCnqEu92Fr1MmWUlvAw.ttf

113 ms

KFOlCnqEu92Fr1MmYUtvAw.ttf

KFOlCnqEu92Fr1MmYUtvAw.ttf

112 ms

88fc3f0d11119ed96edaddd151ee.gz.js

88fc3f0d11119ed96edaddd151ee.gz.js

16 ms

Accessibility Review

robertsonlighting.com accessibility score

92

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

Buttons do not have an accessible name

Best Practices

robertsonlighting.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

robertsonlighting.com SEO score

83

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 Robertsonlighting.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 Robertsonlighting.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

robertsonlighting.com

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