4.1 sec in total
954 ms
2.9 sec
201 ms
Click here to check amazing Colas content for United Kingdom. Otherwise, check out these important facts you probably never knew about colas.co.uk
Colas UK Infrastructure Contractor: We design, construct and maintain highway, aviation and defence infrastructure projects across the UK and Internationally.
Visit colas.co.ukWe analyzed Colas.co.uk page load time and found that the first response time was 954 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
colas.co.uk performance score
name
value
score
weighting
Value6.0 s
4/100
10%
Value16.6 s
0/100
25%
Value11.6 s
4/100
10%
Value2,910 ms
3/100
30%
Value0
100/100
15%
Value25.0 s
0/100
10%
954 ms
170 ms
181 ms
279 ms
273 ms
Our browser made a total of 104 requests to load all elements on the main page. We found that 62% of them (64 requests) were addressed to the original Colas.co.uk, 18% (19 requests) were made to Pbs.twimg.com and 4% (4 requests) were made to Cache.addthiscdn.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Colas.co.uk.
Page size can be reduced by 990.1 kB (21%)
4.6 MB
3.7 MB
In fact, the total size of Colas.co.uk main page is 4.6 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. 70% of websites need less resources to load. Images take 3.5 MB which makes up the majority of the site volume.
Potential reduce by 34.0 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 34.0 kB or 80% of the original size.
Potential reduce by 79.0 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. Colas images are well optimized though.
Potential reduce by 342.1 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 342.1 kB or 69% of the original size.
Potential reduce by 534.9 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. Colas.co.uk needs all CSS files to be minified and compressed as it can save up to 534.9 kB or 85% of the original size.
Number of requests can be reduced by 46 (46%)
100
54
The browser has sent 100 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Colas. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.
www.colas.co.uk
954 ms
style.css
170 ms
system.css
181 ms
font-awesome.css
279 ms
font-awesome.min.css
273 ms
font-awesome-ie7.css
316 ms
font-awesome-ie7.min.css
285 ms
video-js-1.1.5.css
345 ms
template.css
783 ms
template-responsive.css
451 ms
megamenu.css
370 ms
megamenu-responsive.css
402 ms
jquery.min.js
688 ms
jquery-noconflict.js
436 ms
jquery-migrate.min.js
463 ms
caption.js
489 ms
bootstrap.js
702 ms
video-js-1.1.5.js
629 ms
jquery.tap.min.js
559 ms
script.js
574 ms
menu.js
644 ms
responsive.js
665 ms
jquery.bxslider.min.js
658 ms
jquery.bxslider.css
672 ms
system.css
589 ms
ga.js
18 ms
twitter.png
139 ms
facebook.png
146 ms
linkedin.png
157 ms
addthis.png
147 ms
header-bg.png
116 ms
colas-logo.png
117 ms
top-menu-divide.png
114 ms
other-sites.png
117 ms
search-button.png
115 ms
social-media-bg.png
117 ms
top-nav-divide.png
210 ms
top-nav-arrow-selected.png
213 ms
top-nav-arrow.png
210 ms
FEATURED-BOXES-264X110-ABOUT-US.jpeg
209 ms
152_5284.jpg
295 ms
photovoltaic_panels_1_-_mar_12_264_by_110_size.jpg
295 ms
colpatch_no_broom_264_by_110.jpg
365 ms
birmingham_airport_terminal_264_by_110.jpg
365 ms
news.jpg
400 ms
contact.jpg
1080 ms
r_and_d_main.jpg
485 ms
aerial-photo.jpg
799 ms
roadworks.jpeg
494 ms
homepage-module-community.png
418 ms
homepage-module-careers.png
494 ms
homepage-module-products.png
497 ms
homepage-module-brake.png
568 ms
homepage-module-randd.png
583 ms
expand-btn.png
582 ms
footer_linkedin.jpg
584 ms
expand-btn-dark.png
655 ms
__utm.gif
82 ms
link-arrow.png
637 ms
list-arrow.png
636 ms
rss.png
637 ms
twitter-icon.png
713 ms
facebook-icon.png
720 ms
linkedin-icon.png
722 ms
youtube-icon.png
722 ms
widgets.js
80 ms
pcgpHS2BcPs
130 ms
footer-bg.png
748 ms
foot_arrow.jpg
755 ms
bx_loader.gif
729 ms
controls.png
729 ms
controls.png
771 ms
timeline.d11f7a3b3287fb94220e8ee6d03cc772.js
31 ms
syndication
124 ms
521632688856260608
201 ms
www-embed-player-vflfNyN_r.css
27 ms
www-embed-player.js
57 ms
base.js
81 ms
Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js
90 ms
ad_status.js
89 ms
zN7GBFwfMP4uA6AR0HCoLQ.ttf
90 ms
RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf
110 ms
timeline.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css
20 ms
timeline.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css
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5yOUd2Oh_normal.jpeg
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KvyUVANl_normal.jpg
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Rushbrook_Lee__1__normal.jpg
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jot
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colas.co.uk accessibility score
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
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
colas.co.uk best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
colas.co.uk SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
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
Document uses legible font sizes
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Colas.co.uk 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 Colas.co.uk 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.
colas.co.uk
Open Graph description is not detected on the main page of Colas. 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: