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britishgas.com screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

britishgas.com

Gas and electricity, boilers and energy efficiency - British Gas

Page Load Speed

2.9 sec in total

First Response

84 ms

Resources Loaded

2.1 sec

Page Rendered

715 ms

britishgas.com screenshot

About Website

Click here to check amazing British Gas content. Otherwise, check out these important facts you probably never knew about britishgas.com

British Gas is the largest UK energy and home services company. We supply gas and electricity, boilers and boiler cover as well as other home services.

Visit britishgas.com

Key Findings

We analyzed Britishgas.com page load time and found that the first response time was 84 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

britishgas.com performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value5,580 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.063

97/100

15%

TTI (Time to Interactive)

Value14.1 s

9/100

10%

Network Requests Diagram

britishgas.com

84 ms

www.britishgas.co.uk

627 ms

jquery.js

263 ms

nucleus.min.js

812 ms

polyfill.js

677 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 7% of them (1 request) were addressed to the original Britishgas.com, 64% (9 requests) were made to Britishgas.co.uk and 7% (1 request) were made to Assets.adobedtm.com. The less responsive or slowest element that took the longest time to load (812 ms) relates to the external source Britishgas.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 121.5 kB (59%)

Content Size

204.6 kB

After Optimization

83.1 kB

  • HTML
  • JavaScript

In fact, the total size of Britishgas.com main page is 204.6 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. 35% of websites need less resources to load. Javascripts take 160.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 35.9 kB

  • Original 44.4 kB
  • After minification 38.2 kB
  • After compression 8.5 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 6.2 kB, which is 14% 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 35.9 kB or 81% of the original size.

JavaScript Optimization

-53%

Potential reduce by 85.6 kB

  • Original 160.2 kB
  • After minification 160.1 kB
  • After compression 74.6 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 85.6 kB or 53% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (83%)

Requests Now

12

After Optimization

2

  • AJAX
  • JavaScript

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of British Gas. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

britishgas.com

britishgas.com

84 ms

www.britishgas.co.uk

www.britishgas.co.uk

627 ms

jquery.js

jquery.js

263 ms

nucleus.min.js

nucleus.min.js

812 ms

polyfill.js

polyfill.js

677 ms

bundle.js

bundle.js

710 ms

bundle.libs.js

bundle.libs.js

482 ms

launch-EN218421797fef46f6a7f3c42d7c5c18ce.min.js

launch-EN218421797fef46f6a7f3c42d7c5c18ce.min.js

161 ms

qryz_v3.2.js

qryz_v3.2.js

159 ms

adrum-latest.js

adrum-latest.js

98 ms

components.js

components.js

425 ms

only.components.min.js

only.components.min.js

424 ms

default-response.json

default-response.json

175 ms

rTapTrack.min.js

rTapTrack.min.js

95 ms

Accessibility Review

britishgas.com accessibility score

92

Accessibility Issues

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

High

[role]s are not contained by their required parent element

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

britishgas.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

britishgas.com SEO score

86

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

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

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 Britishgas.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 Britishgas.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

britishgas.com

Open Graph data is detected on the main page of British Gas. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: