3.3 sec in total
854 ms
2.1 sec
321 ms
Click here to check amazing Sterlingbuild content for United Kingdom. Otherwise, check out these important facts you probably never knew about sterlingbuild.co.uk
The UK's biggest skylights seller: Buy VELUX & FAKRO loft windows & flashings or flat glass, pyramid & lantern roof lights. Lowest prices!
Visit sterlingbuild.co.ukWe analyzed Sterlingbuild.co.uk page load time and found that the first response time was 854 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
sterlingbuild.co.uk performance score
name
value
score
weighting
Value3.3 s
41/100
10%
Value7.6 s
4/100
25%
Value10.2 s
8/100
10%
Value19,530 ms
0/100
30%
Value0.838
4/100
15%
Value31.0 s
0/100
10%
854 ms
184 ms
200 ms
197 ms
199 ms
Our browser made a total of 72 requests to load all elements on the main page. We found that 72% of them (52 requests) were addressed to the original Sterlingbuild.co.uk, 4% (3 requests) were made to Periscopixgateway.whoson.co.uk and 3% (2 requests) were made to Sealserver.trustwave.com. The less responsive or slowest element that took the longest time to load (854 ms) belongs to the original domain Sterlingbuild.co.uk.
Page size can be reduced by 866.8 kB (48%)
1.8 MB
946.6 kB
In fact, the total size of Sterlingbuild.co.uk main page is 1.8 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 966.0 kB which makes up the majority of the site volume.
Potential reduce by 86.9 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 16.4 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 86.9 kB or 78% of the original size.
Potential reduce by 235.3 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. Obviously, Sterlingbuild needs image optimization as it can save up to 235.3 kB or 24% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 520.6 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 520.6 kB or 74% of the original size.
Potential reduce by 23.9 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. Sterlingbuild.co.uk needs all CSS files to be minified and compressed as it can save up to 23.9 kB or 78% of the original size.
Number of requests can be reduced by 41 (59%)
69
28
The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sterlingbuild. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
www.sterlingbuild.co.uk
854 ms
screen.css
184 ms
content.css
200 ms
tabs.css
197 ms
forms.css
199 ms
jquery-1.6.4.min.js
400 ms
xdRemarketing.js
267 ms
liveSearch.js
297 ms
ui_windowsearcher.js
295 ms
eKomi.js
294 ms
Bing.js
354 ms
ui_nav.js
396 ms
ui_tabs.js
396 ms
WebResource.axd
308 ms
ScriptResource.axd
421 ms
ScriptResource.axd
309 ms
WebResource.axd
309 ms
include.js
173 ms
ui_newsticker.js
448 ms
seal.js
165 ms
si.js
68 ms
conversion.js
39 ms
bat.js
27 ms
dc.js
41 ms
site_bg.jpg
461 ms
Home-page-VELUX-white-painted-window-launch2.png
591 ms
Home-page-Sterlingbuild-ECO-from-322-yellow.jpg
346 ms
Home-page-RoofLITE-from-80-in-spotlight.jpg
260 ms
XXX2-Home-9-VELUX-window-code.jpg
260 ms
XX1-Home-page-5-blinds.jpg
289 ms
XX1-Home-page-6-sun-tunnels.jpg
359 ms
Home-Why-Sterlingbuild-free-delivery.png
357 ms
Home-Why-Sterlingbuild-lowest-prices.png
359 ms
Home-Why-Sterlingbuild-expert-sales-team.png
435 ms
Home-Why-Sterlingbuild-biggest-VELUX-seller.png
458 ms
Home-Why-Sterlingbuild-largest-stock.png
456 ms
Home-Free-delivery-on-orders-over-50.gif
702 ms
Static-RHS-images-Price-match-.png
521 ms
Static-RHS-images-Next-day-delivery.png
557 ms
Static-RHS-images-Best-buys.jpg
555 ms
Static-RHS-images-Which-flashing-kit.png
557 ms
Static-RHS-images-5-reason-to-shop-at-Sterlingbuild.jpg
610 ms
Logo-Roofinglines-835-x-160.png
642 ms
Logo-Windowlines-835-x-160.png
655 ms
__utm.gif
12 ms
ga-audiences
469 ms
periscopixgateway.whoson.co.uk
90 ms
invite.js
169 ms
site_logo.png
446 ms
search_bg.jpg
473 ms
left_db.jpg
469 ms
right_db.jpg
503 ms
bg_lb.jpg
525 ms
left_lb.jpg
526 ms
right_lb.jpg
551 ms
bg_lb_special.jpg
556 ms
left_lb_special.jpg
558 ms
right_lb_special.jpg
591 ms
bottom_left_lb.jpg
613 ms
bottom_right_lb.jpg
611 ms
index_group_header_bg.gif
644 ms
seal_image.php
41 ms
smarticon
54 ms
rTapTrack.min.js
37 ms
48 ms
js
62 ms
82091258003A429.js
273 ms
numberReplacement.json;jsessionid=
283 ms
340 ms
gtmp_compiled_wPC6t3gu0Jc.js
40 ms
82091258003A429-7.gif
88 ms
print.css
90 ms
sterlingbuild.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
sterlingbuild.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
Browser errors were logged to the console
Page has valid source maps
sterlingbuild.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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sterlingbuild.co.uk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Sterlingbuild.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.
sterlingbuild.co.uk
Open Graph description is not detected on the main page of Sterlingbuild. 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: