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callison.com screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

callison.com

Architecture and Urbanism | Arcadis

Page Load Speed

776 ms in total

First Response

60 ms

Resources Loaded

582 ms

Page Rendered

134 ms

callison.com screenshot

About Website

Visit callison.com now to see the best up-to-date Callison content for United States and also check out these interesting facts you probably never knew about callison.com

Our integrated design, digital and engineering teams work together make the vision for a sustainable future come to life.

Visit callison.com

Key Findings

We analyzed Callison.com page load time and found that the first response time was 60 ms and then it took 716 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

callison.com performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value5.8 s

49/100

10%

TBT (Total Blocking Time)

Value670 ms

44/100

30%

CLS (Cumulative Layout Shift)

Value0.132

81/100

15%

TTI (Time to Interactive)

Value9.3 s

31/100

10%

Network Requests Diagram

callison.com

60 ms

www.callisonrtkl.com

93 ms

style.min.css

150 ms

style.css

158 ms

pagenavi-css.css

167 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Callison.com, 46% (17 requests) were made to Callisonrtkl.com and 24% (9 requests) were made to Cdn.crtkl.com. The less responsive or slowest element that took the longest time to load (274 ms) relates to the external source Cdn.crtkl.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 187.7 kB (16%)

Content Size

1.2 MB

After Optimization

998.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Callison.com main page is 1.2 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. 45% of websites need less resources to load. Images take 721.0 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 25.5 kB

  • Original 32.5 kB
  • After minification 29.8 kB
  • After compression 7.0 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 25.5 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 3.6 kB

  • Original 721.0 kB
  • After minification 717.4 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. Callison images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 33.6 kB

  • Original 182.5 kB
  • After minification 182.2 kB
  • After compression 148.9 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 33.6 kB or 18% of the original size.

CSS Optimization

-50%

Potential reduce by 125.0 kB

  • Original 250.6 kB
  • After minification 250.3 kB
  • After compression 125.6 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. Callison.com needs all CSS files to be minified and compressed as it can save up to 125.0 kB or 50% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (73%)

Requests Now

30

After Optimization

8

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Callison. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

callison.com

callison.com

60 ms

www.callisonrtkl.com

www.callisonrtkl.com

93 ms

style.min.css

style.min.css

150 ms

style.css

style.css

158 ms

pagenavi-css.css

pagenavi-css.css

167 ms

search-filter.min.css

search-filter.min.css

174 ms

animate.min.css

animate.min.css

8 ms

bootstrap.min.css

bootstrap.min.css

26 ms

swiper.min.css

swiper.min.css

16 ms

fontawesome.min.css

fontawesome.min.css

34 ms

all.min.css

all.min.css

49 ms

style.min.css

style.min.css

37 ms

addtoany.min.css

addtoany.min.css

193 ms

js

js

80 ms

page.js

page.js

64 ms

jquery.min.js

jquery.min.js

54 ms

addtoany.min.js

addtoany.min.js

274 ms

swiper.min.js

swiper.min.js

47 ms

scripts.min.js

scripts.min.js

53 ms

bootstrap.min.js

bootstrap.min.js

46 ms

jquery.sonar.min.js

jquery.sonar.min.js

242 ms

lazy-load.js

lazy-load.js

171 ms

js

js

81 ms

analytics.js

analytics.js

128 ms

gtm.js

gtm.js

147 ms

arcadis_crtkl_logo.png

arcadis_crtkl_logo.png

64 ms

MicrosoftTeams-image-24-1.png

MicrosoftTeams-image-24-1.png

150 ms

hash-pattern-footer.png

hash-pattern-footer.png

91 ms

sm.25.html

sm.25.html

95 ms

eso.BRQnzO8v.js

eso.BRQnzO8v.js

146 ms

fselliotweb-light.woff

fselliotweb-light.woff

56 ms

icomoon.ttf

icomoon.ttf

57 ms

fselliotweb-regular.woff

fselliotweb-regular.woff

74 ms

fa-solid-900.ttf

fa-solid-900.ttf

76 ms

fa-regular-400.ttf

fa-regular-400.ttf

75 ms

collect

collect

33 ms

collect

collect

41 ms

Accessibility Review

callison.com accessibility score

98

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.

Best Practices

callison.com best practices score

83

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

Page has valid source maps

SEO Factors

callison.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 Callison.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 Callison.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

callison.com

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