5.4 sec in total
1.4 sec
3.5 sec
505 ms
Welcome to cerc.co.uk homepage info - get ready to check CERC best content for India right away, or after learning these important things about cerc.co.uk
CERC (Cambridge, UK) provides environmental software and services for air pollution problems for cities, industries and airports
Visit cerc.co.ukWe analyzed Cerc.co.uk page load time and found that the first response time was 1.4 sec 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.
cerc.co.uk performance score
name
value
score
weighting
Value4.6 s
14/100
10%
Value6.3 s
10/100
25%
Value5.5 s
55/100
10%
Value1,380 ms
16/100
30%
Value0.019
100/100
15%
Value6.4 s
59/100
10%
1439 ms
106 ms
368 ms
438 ms
462 ms
Our browser made a total of 40 requests to load all elements on the main page. We found that 90% of them (36 requests) were addressed to the original Cerc.co.uk, 3% (1 request) were made to Ajax.aspnetcdn.com and 3% (1 request) were made to Yui.yahooapis.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Cerc.co.uk.
Page size can be reduced by 100.0 kB (28%)
355.5 kB
255.5 kB
In fact, the total size of Cerc.co.uk main page is 355.5 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. 20% of websites need less resources to load. Images take 221.7 kB which makes up the majority of the site volume.
Potential reduce by 25.0 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. This page needs HTML code to be minified as it can gain 4.8 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 25.0 kB or 79% of the original size.
Potential reduce by 16.2 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. CERC images are well optimized though.
Potential reduce by 4.6 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 4.6 kB or 12% of the original size.
Potential reduce by 54.1 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. Cerc.co.uk needs all CSS files to be minified and compressed as it can save up to 54.1 kB or 86% of the original size.
Number of requests can be reduced by 18 (46%)
39
21
The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CERC. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
cerc.co.uk
1439 ms
jquery-1.8.3.min.js
106 ms
default-design1.css
368 ms
default-design2.css
438 ms
default-content.css
462 ms
tools.js
294 ms
styleswitch.js
279 ms
yui-min.js
61 ms
mapserv
648 ms
yql
648 ms
bgd_bluepale.jpg
187 ms
shadow_topright.jpg
188 ms
shadow_topleft.jpg
187 ms
shadow_top.jpg
185 ms
shadow_right.jpg
189 ms
shadow_left.jpg
191 ms
bgd_blue.jpg
357 ms
CERC_banner.jpg
735 ms
bgd_bluelight.jpg
354 ms
blue.png
342 ms
home_consultancy.jpg
560 ms
home_forecasting_modified.png
683 ms
home_software.jpg
711 ms
home_software2.png
614 ms
home_support.jpg
631 ms
home_about.png
971 ms
thames.png
803 ms
blank.png
789 ms
AirPollution.png
861 ms
Pollen.png
891 ms
UV.png
911 ms
CAMS4UK_20160328_total.png
964 ms
key2.png
974 ms
about.png
1007 ms
shadow_bottomright.jpg
1066 ms
shadow_bottomleft.jpg
1082 ms
shadow_bottom.jpg
1107 ms
LOW.png
509 ms
accessi-design.css
256 ms
printer-design.css
314 ms
cerc.co.uk accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
Image elements do not have [alt] attributes
Links do not have a discernible name
cerc.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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
cerc.co.uk SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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 doesn't use legible font sizes
Tap targets are not sized appropriately
EN
EN
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cerc.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 Cerc.co.uk main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
cerc.co.uk
Open Graph description is not detected on the main page of CERC. 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: