2.8 sec in total
304 ms
2 sec
402 ms
Welcome to centrica.com homepage info - get ready to check Centrica best content for United Kingdom right away, or after learning these important things about centrica.com
Home
Visit centrica.comWe analyzed Centrica.com page load time and found that the first response time was 304 ms and then it took 2.4 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.
centrica.com performance score
name
value
score
weighting
Value2.6 s
63/100
10%
Value9.1 s
1/100
25%
Value7.9 s
22/100
10%
Value280 ms
81/100
30%
Value0.072
96/100
15%
Value18.4 s
3/100
10%
304 ms
887 ms
7 ms
12 ms
13 ms
Our browser made a total of 56 requests to load all elements on the main page. We found that 91% of them (51 requests) were addressed to the original Centrica.com, 4% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (887 ms) belongs to the original domain Centrica.com.
Page size can be reduced by 898.0 kB (15%)
6.2 MB
5.3 MB
In fact, the total size of Centrica.com main page is 6.2 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 5.4 MB which makes up the majority of the site volume.
Potential reduce by 57.0 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 57.0 kB or 82% of the original size.
Potential reduce by 272.3 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. Centrica images are well optimized though.
Potential reduce by 218.5 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 218.5 kB or 62% of the original size.
Potential reduce by 350.3 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. Centrica.com needs all CSS files to be minified and compressed as it can save up to 350.3 kB or 87% of the original size.
Number of requests can be reduced by 13 (25%)
51
38
The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Centrica. 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 from 4 to 1 for CSS and as a result speed up the page load time.
www.centrica.com
304 ms
www.centrica.com
887 ms
css_rpg94snLPM11Nu5bCg9dXrdXTf3xdz62C0hZY3J7wRA.css
7 ms
css_JtplZ6FOxGSGXUW5IQ3mhynpuhbR47ON6JNUTkazKNY.css
12 ms
css_Sz2xb4uPoevxwW7aLIl0ZoQ4oPLY1Ii85HUPJoWK1EE.css
13 ms
css_6xTF2tcKY04jegpCRhPOJq-3SZbeDe2U6TlhFya_c8A.css
20 ms
js_pPx82f2NEgcdA0dGig51elAOdhZikdCvHgf8UnEy7_s.js
18 ms
js_PmvA1as8yACsqJggmTNlrcWaldAR5bMSgj4gSTFRk6U.js
17 ms
js_9QIJrVYjlN3UieSbObrEJFKvVcg0iLX5vxoew9nwnMw.js
15 ms
js_0x07_y2mGZb7_LU6kamWKVLJGs9RNU2iWMoRR9UcU9k.js
60 ms
js_FBnc_-TEtgBUZfGzcsNXWZDYiXNlAcGR1_cvcnTpGTg.js
63 ms
js_pANdSMOzevA-PBrnj1P_lEXHgcUATZV3CEsvM-hcQpM.js
109 ms
gtm.js
402 ms
logo.png
325 ms
header.png
327 ms
news.png
348 ms
investors.png
356 ms
405x403-selection_01_06_2015_007.png
407 ms
tile-1.jpg
326 ms
379x376-selection_29_05_2015_010.png
428 ms
377x376-selection_29_05_2015_008.png
405 ms
aprent-tile.png
363 ms
woman_on_the_phone_500_x_500.jpg
354 ms
share-price-widget-sprite.png
362 ms
share-price-background.jpg
363 ms
centrica-customer-carousel1.jpg
407 ms
bord_gais.png
364 ms
british_gas.png
409 ms
centrica_0.jpg
408 ms
centrica_storage.png
412 ms
direct_energy.png
411 ms
dyno.png
409 ms
hive_logo_hi-res_420wx200h.jpg
413 ms
shares-bg.jpg
412 ms
centrica.jpg
417 ms
default_news_item_teaser_image_1.png
423 ms
careers-bg-engineer-smart-female-tile.jpg
414 ms
tile.jpg
413 ms
careers-midstream-office-tile.jpg
416 ms
careers-engineer-apprentice-safety-tile.jpg
414 ms
careers-exploration-subsurface-offshore-tile.jpg
417 ms
careers-hummingbird-offshore-v2-tile.jpg
418 ms
default_news_item_teaser_image.png
421 ms
british_gas_logo_500_x_500_ish.jpg
419 ms
hive_new_products_-_group.jpg
420 ms
centrica_solarfarm_carbon_tile.jpg
425 ms
social-links-sprite.png
425 ms
_Incapsula_Resource
423 ms
OpenSansRegular.woff
120 ms
OpenSansLight.woff
107 ms
OpenSansBold.woff
107 ms
analytics.js
119 ms
hotjar-72450.js
183 ms
e8C.js
86 ms
_Incapsula_Resource
9 ms
collect
35 ms
centrica.com accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Some elements have a [tabindex] value greater than 0
centrica.com 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
Missing source maps for large first-party JavaScript
Issues were logged in the Issues panel in Chrome Devtools
centrica.com 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
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 Centrica.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 Centrica.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.
centrica.com
Open Graph description is not detected on the main page of Centrica. 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: