11.3 sec in total
3.2 sec
7.6 sec
424 ms
Welcome to nef.org.uk homepage info - get ready to check Nef best content for United Kingdom right away, or after learning these important things about nef.org.uk
We're a charity for everyone. No matter what your circumstances are, the National Energy Foundation can help you understand and improve your use of domestic energy.
Visit nef.org.ukWe analyzed Nef.org.uk page load time and found that the first response time was 3.2 sec and then it took 8.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
nef.org.uk performance score
name
value
score
weighting
Value3.4 s
39/100
10%
Value6.4 s
9/100
25%
Value6.3 s
41/100
10%
Value900 ms
31/100
30%
Value0
100/100
15%
Value6.6 s
57/100
10%
3194 ms
728 ms
41 ms
34 ms
1726 ms
Our browser made a total of 88 requests to load all elements on the main page. We found that 93% of them (82 requests) were addressed to the original Nef.org.uk, 2% (2 requests) were made to Maxcdn.bootstrapcdn.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (4.4 sec) belongs to the original domain Nef.org.uk.
Page size can be reduced by 857.9 kB (10%)
8.8 MB
7.9 MB
In fact, the total size of Nef.org.uk main page is 8.8 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. 50% of websites need less resources to load. Images take 8.1 MB which makes up the majority of the site volume.
Potential reduce by 94.7 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 38.9 kB, which is 37% 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 94.7 kB or 90% of the original size.
Potential reduce by 383.3 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. Nef images are well optimized though.
Potential reduce by 177.8 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 177.8 kB or 66% of the original size.
Potential reduce by 202.0 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. Nef.org.uk needs all CSS files to be minified and compressed as it can save up to 202.0 kB or 85% of the original size.
Number of requests can be reduced by 19 (22%)
86
67
The browser has sent 86 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nef. 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 8 to 1 for CSS and as a result speed up the page load time.
nef.org.uk
3194 ms
bootstrap.css
728 ms
font-awesome.min.css
41 ms
css
34 ms
style.css
1726 ms
map.css
1362 ms
datepicker.css
352 ms
owl.carousel.css
2363 ms
logo.png
350 ms
icon-header-mail.png
433 ms
icon-header-phone.png
441 ms
icon-header-responsive-search.png
515 ms
mega-menu-filters-header.png
357 ms
NEF_Building_Exterior_-_Home_Page.jpg
2594 ms
Solar_Panel_Installation.jpg
2622 ms
Commercial_-_Home_Page.jpg
2686 ms
Fan_Heater_-_Home_Page.jpg
3515 ms
home-banner-left-cutout-2-330.png
435 ms
home-banner-right-cutout-330.png
365 ms
Laptop_and_Leaflet2.jpg
4357 ms
Evaluating_Building_Performance.jpg
3373 ms
Providing_Practical_Experience.jpg
2764 ms
Providing_impartial.jpg
2792 ms
Brad_and_Kerry_-_Home_Page.jpg
2939 ms
bird.png
451 ms
jquery.js
573 ms
owl.carousel.min.js
594 ms
jquery.jcarousel.min.js
465 ms
skin.css
556 ms
jquery.mobile.custom.min.js
644 ms
jquery.cycle2.min.js
663 ms
jquery.cycle2.swipe.min.js
675 ms
bootstrap-datepicker.js
733 ms
jquery.placeholder.js
754 ms
nef2.js
755 ms
bootstrap.min.js
822 ms
holder.js
843 ms
widgets.js
179 ms
nav-dropdown-arrow.png
167 ms
home-banner-background.jpg
168 ms
circle-cut-out-sml.png
217 ms
repeat-bg-home-services.jpg
217 ms
repeat-bg-what-people-say.jpg
285 ms
footer-divider-light.gif
164 ms
Energy_Envoys_Logo_Portrait-140x160.png
329 ms
VolDEC-140x49.png
309 ms
Energiesprong-140x63.png
314 ms
SimpleCarbonCalculator-140x64.png
368 ms
Ace_for_Communities_logo-140x118.png
372 ms
LogPile_colour-140x118.png
468 ms
Assemble-140x49.png
485 ms
SuperHomes_Logo_Colour-140x128.png
495 ms
YouGen-138x74.png
490 ms
Laptop.jpg
902 ms
Open_Book.jpg
1025 ms
BHBH_image.png
1539 ms
Energy_Envoys_Logo_-_Round.png
1003 ms
Logs_Stacked4.JPG
1257 ms
NEF_Building.jpg
1131 ms
Diary_and_Leaflet4.jpg
1243 ms
Cash_Pile_2.jpg
1504 ms
Woman_by_Fire.jpg
1355 ms
YouGen_Avatar.jpg
1431 ms
Solar_Panel_Closeup2.JPG
1738 ms
Energy_Scale.jpg
1541 ms
Laptop_Keyboard.JPG
1739 ms
Energiesprong-UK-logo-Web-Circle.jpg
1594 ms
Oxford_City_Council_Logo.jpg
1643 ms
East_Hampshire_DC_Logo.jpg
1645 ms
Suffolk_County_Council.png
1694 ms
Smart_Hooky_Logo.jpg
1732 ms
Sanctuary_Housing_Logo.png
1741 ms
Wolseley_Logo.png
1789 ms
Regen_SW_Logo.jpg
2497 ms
Chiltern_DC_Logo.png
1842 ms
7_Vents_Cotentin2_Logo.jpg
2211 ms
Thames_Valley_Police_Logo.png
1930 ms
Cherwell_District_Council_Logo.jpg
1885 ms
Three_Rivers_District_Council_Logo.png
1932 ms
Red_Kite_Community_Housing_Logo.png
1971 ms
ga.js
102 ms
caption-bg.png
299 ms
OpenSans-Bold-webfont.woff
389 ms
glyphicons-halflings-regular.woff
543 ms
opensans-regular-webfont.woff
483 ms
fontawesome-webfont.woff
46 ms
__utm.gif
21 ms
South_Bucks_DC.gif
1483 ms
nef.org.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
Links do not have a discernible name
nef.org.uk best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
nef.org.uk SEO score
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
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nef.org.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 Nef.org.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.
nef.org.uk
Open Graph description is not detected on the main page of Nef. 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: