Tools & Wizards About Us
rdh.com screenshot

Report Summary

  • 49

    Performance

    Renders faster than
    67% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

rdh.com

Building Science Services - RDH | Making Buildings Better™

Page Load Speed

4.2 sec in total

First Response

153 ms

Resources Loaded

2.5 sec

Page Rendered

1.5 sec

rdh.com screenshot

About Website

Click here to check amazing RDH content for Canada. Otherwise, check out these important facts you probably never knew about rdh.com

RDH is a building science and engineering consulting firm offering services in New Construction, Existing Buildings, and Research + Forensics.

Visit rdh.com

Key Findings

We analyzed Rdh.com page load time and found that the first response time was 153 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

rdh.com performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value7.5 s

4/100

25%

SI (Speed Index)

Value4.9 s

65/100

10%

TBT (Total Blocking Time)

Value390 ms

68/100

30%

CLS (Cumulative Layout Shift)

Value0.043

99/100

15%

TTI (Time to Interactive)

Value8.4 s

39/100

10%

Network Requests Diagram

rdh.com

153 ms

www.rdh.com

46 ms

www.rdh.com

523 ms

all.css

415 ms

qkz5xjg.css

466 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 37% of them (19 requests) were addressed to the original Rdh.com, 14% (7 requests) were made to 371814.smushcdn.com and 12% (6 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (695 ms) relates to the external source Use.fontawesome.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 98.6 kB (13%)

Content Size

758.3 kB

After Optimization

659.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rdh.com main page is 758.3 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. 70% of websites need less resources to load. Images take 563.9 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 46.9 kB

  • Original 58.3 kB
  • After minification 52.0 kB
  • After compression 11.3 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 6.3 kB, which is 11% 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 46.9 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 563.9 kB
  • After minification 563.9 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. RDH images are well optimized though.

JavaScript Optimization

-38%

Potential reduce by 34.0 kB

  • Original 90.2 kB
  • After minification 90.2 kB
  • After compression 56.3 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 34.0 kB or 38% of the original size.

CSS Optimization

-39%

Potential reduce by 17.7 kB

  • Original 45.9 kB
  • After minification 28.8 kB
  • After compression 28.2 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. Rdh.com needs all CSS files to be minified and compressed as it can save up to 17.7 kB or 39% of the original size.

Requests Breakdown

Number of requests can be reduced by 27 (66%)

Requests Now

41

After Optimization

14

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RDH. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rdh.com

rdh.com

153 ms

www.rdh.com

www.rdh.com

46 ms

www.rdh.com

www.rdh.com

523 ms

all.css

all.css

415 ms

qkz5xjg.css

qkz5xjg.css

466 ms

jquery.fancybox.min.css

jquery.fancybox.min.css

376 ms

style.min.css

style.min.css

36 ms

style.css

style.css

189 ms

frontend.min.css

frontend.min.css

182 ms

flatpickr.min.css

flatpickr.min.css

212 ms

select2.min.css

select2.min.css

244 ms

css

css

367 ms

font-awesome.min.css

font-awesome.min.css

409 ms

jquery.fancybox.min.css

jquery.fancybox.min.css

481 ms

slick.min.css

slick.min.css

456 ms

main-style.css

main-style.css

246 ms

jquery.min.js

jquery.min.js

340 ms

flatpickr.min.js

flatpickr.min.js

245 ms

select2.min.js

select2.min.js

244 ms

jquery.fancybox.js

jquery.fancybox.js

318 ms

frontend.min.js

frontend.min.js

317 ms

modernizr.min.js

modernizr.min.js

443 ms

slick.min.js

slick.min.js

444 ms

site-js.js

site-js.js

328 ms

map.js

map.js

328 ms

lazyload.min.js

lazyload.min.js

326 ms

p.css

p.css

59 ms

hotjar-1778224.js

hotjar-1778224.js

446 ms

gtm.js

gtm.js

524 ms

logo-hires.png

logo-hires.png

524 ms

MTES-audience-guide-300x200.jpg

MTES-audience-guide-300x200.jpg

512 ms

Nelson-Mouellic-Photo-7397-300x200.jpg

Nelson-Mouellic-Photo-7397-300x200.jpg

511 ms

151021_day_rendering-768x1280.jpg

151021_day_rendering-768x1280.jpg

511 ms

Cropped-768x296.png

Cropped-768x296.png

513 ms

18_08_30_Facilities_Update-3-2-768x512.jpg

18_08_30_Facilities_Update-3-2-768x512.jpg

513 ms

footer-logo.png

footer-logo.png

510 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

267 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4gaVQ.woff

271 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVQ.woff

359 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4gaVQ.woff

465 ms

fa-solid-900.woff

fa-solid-900.woff

252 ms

fa-regular-400.woff

fa-regular-400.woff

357 ms

fa-brands-400.woff

fa-brands-400.woff

695 ms

CO_200415_RDH_Vancouver_Field_N74.jpg

CO_200415_RDH_Vancouver_Field_N74.jpg

220 ms

14A7580.jpg

14A7580.jpg

209 ms

careers-headline-new-1800x765.jpg

careers-headline-new-1800x765.jpg

195 ms

modules.cf44a0a6b448df1b035e.js

modules.cf44a0a6b448df1b035e.js

158 ms

box-69edcc3187336f9b0a3fbb4c73be9fe6.html

box-69edcc3187336f9b0a3fbb4c73be9fe6.html

468 ms

analytics.js

analytics.js

447 ms

js

js

152 ms

collect

collect

20 ms

Accessibility Review

rdh.com accessibility score

77

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

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

rdh.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

rdh.com SEO score

93

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

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 Rdh.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 Rdh.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

rdh.com

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