2.8 sec in total
316 ms
1.8 sec
621 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 316 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
colas.co.uk performance score
name
value
score
weighting
Value4.8 s
11/100
10%
Value10.8 s
0/100
25%
Value12.0 s
4/100
10%
Value1,950 ms
8/100
30%
Value0
100/100
15%
Value25.4 s
0/100
10%
316 ms
55 ms
73 ms
114 ms
467 ms
Our browser made a total of 77 requests to load all elements on the main page. We found that 53% of them (41 requests) were addressed to the original Colas.co.uk, 6% (5 requests) were made to Use.fontawesome.com and 6% (5 requests) were made to Fonts.gstatic.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 643.7 kB (13%)
5.0 MB
4.3 MB
In fact, the total size of Colas.co.uk main page is 5.0 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.8 MB which makes up the majority of the site volume.
Potential reduce by 90.9 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 15.7 kB, which is 15% 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 90.9 kB or 85% of the original size.
Potential reduce by 11.6 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 317.1 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 317.1 kB or 44% of the original size.
Potential reduce by 224.1 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. Colas.co.uk needs all CSS files to be minified and compressed as it can save up to 224.1 kB or 68% of the original size.
Number of requests can be reduced by 42 (63%)
67
25
The browser has sent 67 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 26 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
colas.co.uk
316 ms
css
55 ms
css
73 ms
c0edd068ad.js
114 ms
bootstrap.min.css
467 ms
bootstrap-theme.min.css
246 ms
jquery.fancybox.min.css
173 ms
theme.css
320 ms
theme-responsive.css
322 ms
jquery-2.1.1.min.js
43 ms
js
90 ms
66bb32fa9a98632856ef88a3bbe17146.js
438 ms
js
149 ms
152193.js
72 ms
js
93 ms
markerclusterer.js
516 ms
bootstrap.min.js
83 ms
docs.min.js
182 ms
ie10-viewport-bug-workaround.js
164 ms
jquery.matchHeight-min.js
178 ms
counter.js
244 ms
jquery.fancybox.min.js
369 ms
jquery.gototop.min.js
254 ms
parallax.min.js
257 ms
custom.js
262 ms
addthis_widget.js
132 ms
bodymovin.js
855 ms
hotjar-837504.js
137 ms
Colas%20logo.svg
106 ms
White-Chevron.svg
105 ms
Yellow-Chevron.svg
103 ms
sustainable-road-solutions.jpg
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stockport_2003011_1326.jpg
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lincolnshire_2010001_0018.jpg
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csr_2111005_0021.jpg
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Arrow%20black%20right.svg
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Arrow%20graphic%20light%20blue.svg
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logo%20footer.svg
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insight.min.js
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UfW2V6iUHpw
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dusk-road.jpg
544 ms
Hero%20angle%20graphic%20white.svg
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ms407-blued-with-sign-front-cover.jpg
497 ms
shutterstock_706644475-toll-booths-lights-991x650.jpg
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highways-sectors.jpg
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wattway-solar-road-colas-900x601.jpg
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Vertical%20line%20graphic.svg
544 ms
left%20quote%20mark.svg
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right%20quote%20mark.svg
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csr-header.jpg
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Arrow%20bullet%20blue.svg
635 ms
Arrow%20bullet%20blue_8.svg
634 ms
yellow%20graphic.svg
633 ms
c0edd068ad.css
91 ms
Gotham-Book.woff
543 ms
5aU69_a8oxmIdGl4Ag.woff
29 ms
5aU19_a8oxmIfJpbERySiw.woff
38 ms
5aU19_a8oxmIfNJdERySiw.woff
45 ms
Gotham-Medium.woff
662 ms
uwt.js
7 ms
adsct
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adsct
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insight_tag_errors.gif
358 ms
www-player.css
10 ms
www-embed-player.js
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base.js
57 ms
font-awesome-css.min.css
290 ms
ad_status.js
273 ms
L24uOtqvNfFRO5TOxiIOVgM50wph5QKjT82e9pNVgC0.js
237 ms
embed.js
91 ms
c0edd068ad.css
51 ms
KFOlCnqEu92Fr1MmEU9fBBc-.woff
85 ms
KFOmCnqEu92Fr1Mu4mxM.woff
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fontawesome-webfont.woff
102 ms
id
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Create
104 ms
GenerateIT
15 ms
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
Page has valid source maps
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
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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 data is detected on the main page of Colas. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: