Tools & Wizards About Us
edf-energy.com screenshot

Report Summary

  • 60

    Performance

    Renders faster than
    75% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

edf-energy.com

Electricity & Gas | UK Energy Supplier for Home & Business | EDF

Page Load Speed

2.2 sec in total

First Response

190 ms

Resources Loaded

970 ms

Page Rendered

1 sec

edf-energy.com screenshot

About Website

Welcome to edf-energy.com homepage info - get ready to check EDF Energy best content right away, or after learning these important things about edf-energy.com

EDF is an energy provider, supplying electricity and gas to homes and businesses in the UK. Compare our energy prices, get a quote and switch. Our electricity is zero carbon.

Visit edf-energy.com

Key Findings

We analyzed Edf-energy.com page load time and found that the first response time was 190 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

edf-energy.com performance score

60

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

77/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

86/100

25%

SI (Speed Index)

Value4.8 s

67/100

10%

TBT (Total Blocking Time)

Value1,360 ms

17/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.4 s

39/100

10%

Network Requests Diagram

www.edfenergy.com

190 ms

css_XFGJqMu3a_pLXb6jU0PxLMKIYcc8G5bSfQQATB782Fk.css

76 ms

css_iIAI0kMrpPP9wjBFVr_63Q7yQhqQtf8-W09MRlif81k.css

406 ms

js_HZH0bpsf9Sw_othPNSL3cNRrfoIOJ6ssxHLexT0_vQY.js

487 ms

edf-colour.svg

170 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that all of those requests were addressed to Edf-energy.com and no external sources were called. The less responsive or slowest element that took the longest time to load (526 ms) relates to the external source Edfenergy.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 346.0 kB (22%)

Content Size

1.5 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Edf-energy.com main page is 1.5 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 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 317.0 kB

  • Original 371.0 kB
  • After minification 299.0 kB
  • After compression 54.0 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 72.0 kB, which is 19% 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 317.0 kB or 85% of the original size.

Image Optimization

-1%

Potential reduce by 7.3 kB

  • Original 1.1 MB
  • After minification 1.1 MB

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. EDF Energy images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 57.4 kB
  • After minification 57.4 kB
  • After compression 57.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-90%

Potential reduce by 21.7 kB

  • Original 24.0 kB
  • After minification 2.4 kB
  • After compression 2.3 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. Edf-energy.com needs all CSS files to be minified and compressed as it can save up to 21.7 kB or 90% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

57

After Optimization

57

  • Images
  • JavaScript
  • CSS

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of EDF Energy. According to our analytics all requests are already optimized.

Network Requests Diagram

www.edfenergy.com

www.edfenergy.com

190 ms

css_XFGJqMu3a_pLXb6jU0PxLMKIYcc8G5bSfQQATB782Fk.css

css_XFGJqMu3a_pLXb6jU0PxLMKIYcc8G5bSfQQATB782Fk.css

76 ms

css_iIAI0kMrpPP9wjBFVr_63Q7yQhqQtf8-W09MRlif81k.css

css_iIAI0kMrpPP9wjBFVr_63Q7yQhqQtf8-W09MRlif81k.css

406 ms

js_HZH0bpsf9Sw_othPNSL3cNRrfoIOJ6ssxHLexT0_vQY.js

js_HZH0bpsf9Sw_othPNSL3cNRrfoIOJ6ssxHLexT0_vQY.js

487 ms

edf-colour.svg

edf-colour.svg

170 ms

Home_Nav_%20Heat_1.png

Home_Nav_%20Heat_1.png

21 ms

Home_Nav_Heat_2.png

Home_Nav_Heat_2.png

19 ms

Home_Nav_Heat_3.png

Home_Nav_Heat_3.png

24 ms

Home_Nave_Heat_4.png

Home_Nave_Heat_4.png

24 ms

Home_Solar_Nav_1.png

Home_Solar_Nav_1.png

29 ms

Home_Solar_Nav_4.png

Home_Solar_Nav_4.png

30 ms

Home_Solar_Nav_3.png

Home_Solar_Nav_3.png

34 ms

Home_Nav_Smart%20_1.png

Home_Nav_Smart%20_1.png

35 ms

Home_Nav_Smart_2.png

Home_Nav_Smart_2.png

39 ms

Home_Nav_Smart_3.png

Home_Nav_Smart_3.png

38 ms

Home_EV_Nav_1.png

Home_EV_Nav_1.png

43 ms

Home_EV_Nav_3.png

Home_EV_Nav_3.png

44 ms

Home_EV_Nav_2_0.png

Home_EV_Nav_2_0.png

47 ms

SME_quote_Nav_1.png

SME_quote_Nav_1.png

46 ms

SME_tariff_Nav_1.png

SME_tariff_Nav_1.png

51 ms

Home_Quote_Nav_1.png

Home_Quote_Nav_1.png

51 ms

SME_quote_Nav_3.png

SME_quote_Nav_3.png

52 ms

SME_MyAccount_Nav_3.png

SME_MyAccount_Nav_3.png

53 ms

SME_MyAccount_Nav_4.png

SME_MyAccount_Nav_4.png

54 ms

SME_tariff_Nav_2.png

SME_tariff_Nav_2.png

57 ms

SME_EV_Nav_1.png

SME_EV_Nav_1.png

57 ms

SME_EV_Nav2.png

SME_EV_Nav2.png

58 ms

SME_EV_Nav_2.png

SME_EV_Nav_2.png

60 ms

SME_EV_Nav_3.png

SME_EV_Nav_3.png

63 ms

About_us_power_Nav_1.png

About_us_power_Nav_1.png

63 ms

About_us_power_Nav_2.png

About_us_power_Nav_2.png

64 ms

About_us_power_Nav_3.png

About_us_power_Nav_3.png

68 ms

43351_007%202.png

43351_007%202.png

66 ms

Nav_1.png

Nav_1.png

68 ms

Nav_4.png

Nav_4.png

69 ms

About-us_careers_Nav_3.png

About-us_careers_Nav_3.png

73 ms

About_us_careers_Nav_3.png

About_us_careers_Nav_3.png

71 ms

About_us_HPC_Nav_1.png

About_us_HPC_Nav_1.png

62 ms

About_us_HPC_Nav_2.png

About_us_HPC_Nav_2.png

62 ms

About_us_HPC_Nav_5.png

About_us_HPC_Nav_5.png

60 ms

Company.png

Company.png

132 ms

Wind.png

Wind.png

263 ms

Thumb.png

Thumb.png

348 ms

testimonial.svg

testimonial.svg

333 ms

tp-stars-5.svg

tp-stars-5.svg

404 ms

header-solar-roof-full-file.jpg

header-solar-roof-full-file.jpg

269 ms

edf291121c10203_heat_royalty_free.jpg

edf291121c10203_heat_royalty_free.jpg

285 ms

heat_pump_customer.jpg

heat_pump_customer.jpg

293 ms

smart%20meter%20blog.jpg

smart%20meter%20blog.jpg

308 ms

vauxhall_corsa_ev_optimised.jpg

vauxhall_corsa_ev_optimised.jpg

310 ms

Family%20on%20sofa.jpg

Family%20on%20sofa.jpg

316 ms

Zero%20Carbon%20149x149.png

Zero%20Carbon%20149x149.png

525 ms

Zero%20Hassle%20149x149_0.png

Zero%20Hassle%20149x149_0.png

526 ms

Value%20%26%20Control%20149x149_2.png

Value%20%26%20Control%20149x149_2.png

455 ms

magglass-orange-icon.svg

magglass-orange-icon.svg

78 ms

magglass-white-icon.svg

magglass-white-icon.svg

76 ms

account-icon.svg

account-icon.svg

211 ms

vauxhall_corsa_ev_optimised.jpg

vauxhall_corsa_ev_optimised.jpg

69 ms

Accessibility Review

edf-energy.com accessibility score

98

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

edf-energy.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

edf-energy.com SEO score

93

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Edf-energy.com 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 Edf-energy.com 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.

Social Sharing Optimization

edf-energy.com

Open Graph description is not detected on the main page of EDF Energy. 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: