Tools & Wizards About Us
energizer.co.uk screenshot

Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

energizer.co.uk

Energizer® Batteries, Battery Chargers and Flash Lights

Page Load Speed

4.1 sec in total

First Response

128 ms

Resources Loaded

3.8 sec

Page Rendered

153 ms

energizer.co.uk screenshot

About Website

Welcome to energizer.co.uk homepage info - get ready to check Energizer best content right away, or after learning these important things about energizer.co.uk

Beyond batteries and lighting, our real product is bringing positivenergy to the world. Energizer believe everyone has the power to make a positive impact.

Visit energizer.co.uk

Key Findings

We analyzed Energizer.co.uk page load time and found that the first response time was 128 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

energizer.co.uk performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value19.2 s

0/100

25%

SI (Speed Index)

Value12.2 s

3/100

10%

TBT (Total Blocking Time)

Value450 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value0.96

2/100

15%

TTI (Time to Interactive)

Value14.4 s

9/100

10%

Network Requests Diagram

energizer.co.uk

128 ms

2321 ms

screen.css

99 ms

custom-css-ga.css

78 ms

aos.css

39 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Energizer.co.uk, 89% (81 requests) were made to Energizer.eu and 2% (2 requests) were made to Unpkg.com. The less responsive or slowest element that took the longest time to load (2.3 sec) relates to the external source Energizer.eu.

Page Optimization Overview & Recommendations

Page size can be reduced by 106.0 kB (2%)

Content Size

4.9 MB

After Optimization

4.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Energizer.co.uk main page is 4.9 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. 55% of websites need less resources to load. Images take 4.7 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 67.5 kB

  • Original 83.1 kB
  • After minification 76.2 kB
  • After compression 15.6 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 67.5 kB or 81% of the original size.

Image Optimization

-1%

Potential reduce by 28.6 kB

  • Original 4.7 MB
  • After minification 4.7 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. Energizer images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 3.0 kB

  • Original 119.6 kB
  • After minification 119.6 kB
  • After compression 116.6 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. This website has mostly compressed JavaScripts.

CSS Optimization

-14%

Potential reduce by 6.9 kB

  • Original 50.4 kB
  • After minification 50.4 kB
  • After compression 43.5 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. Energizer.co.uk needs all CSS files to be minified and compressed as it can save up to 6.9 kB or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 60 (69%)

Requests Now

87

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Energizer. 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 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

energizer.co.uk

energizer.co.uk

128 ms

2321 ms

screen.css

screen.css

99 ms

custom-css-ga.css

custom-css-ga.css

78 ms

aos.css

aos.css

39 ms

aos.js

aos.js

51 ms

script.js

script.js

26 ms

style.min.css

style.min.css

114 ms

dynamic-mobmenu.css

dynamic-mobmenu.css

94 ms

css

css

46 ms

mobmenu-icons.css

mobmenu-icons.css

93 ms

mobmenu.css

mobmenu.css

94 ms

jquery.min.js

jquery.min.js

31 ms

include.js

include.js

147 ms

mobmenu.js

mobmenu.js

164 ms

shailan-dropdown.min.css

shailan-dropdown.min.css

166 ms

web20.css

web20.css

165 ms

osano.js

osano.js

213 ms

hoverIntent.min.js

hoverIntent.min.js

166 ms

comment-reply.min.js

comment-reply.min.js

184 ms

js-min.js

js-min.js

266 ms

modernizr-custom.js

modernizr-custom.js

279 ms

picturefill.min.js

picturefill.min.js

234 ms

jquery.popupoverlay.js

jquery.popupoverlay.js

238 ms

dropdown.png

dropdown.png

495 ms

uk.png

uk.png

494 ms

dropdown-black.png

dropdown-black.png

496 ms

hy.png

hy.png

497 ms

at.png

at.png

497 ms

az.png

az.png

497 ms

by.png

by.png

499 ms

benl.png

benl.png

498 ms

be.png

be.png

499 ms

cyy.png

cyy.png

500 ms

cs.png

cs.png

500 ms

da.png

da.png

502 ms

nl.png

nl.png

503 ms

eu2.png

eu2.png

503 ms

fi.png

fi.png

503 ms

fr.png

fr.png

504 ms

ge.png

ge.png

505 ms

de.png

de.png

505 ms

el.png

el.png

506 ms

hu.png

hu.png

507 ms

is.png

is.png

507 ms

ga.png

ga.png

508 ms

it.png

it.png

508 ms

kz.png

kz.png

509 ms

kg.png

kg.png

508 ms

nb.png

nb.png

509 ms

pl.png

pl.png

510 ms

pt-pt.png

pt-pt.png

510 ms

ro.png

ro.png

511 ms

sk.png

sk.png

511 ms

es.png

es.png

512 ms

sv.png

sv.png

512 ms

EnergiProNarrow-Regular.otf

EnergiProNarrow-Regular.otf

570 ms

chf.png

chf.png

507 ms

ch.png

ch.png

475 ms

analytics.js

analytics.js

125 ms

tr.png

tr.png

126 ms

tm.png

tm.png

125 ms

uz.png

uz.png

123 ms

lit.png

lit.png

124 ms

facebook.png

facebook.png

122 ms

search_icon.png

search_icon.png

123 ms

brand-stripe.png

brand-stripe.png

219 ms

logo.png

logo.png

299 ms

Q1_FY25_ENR_UK_1440.jpg

Q1_FY25_ENR_UK_1440.jpg

299 ms

Q1_FY25_ENR_UK_RGB_Energizer.com_MOBILE_1200x1200_AW.jpg

Q1_FY25_ENR_UK_RGB_Energizer.com_MOBILE_1200x1200_AW.jpg

321 ms

Banner_01.jpg

Banner_01.jpg

298 ms

LITHIUM1.jpg

LITHIUM1.jpg

296 ms

Banner_3.jpg

Banner_3.jpg

385 ms

MAXPLUS1.jpg

MAXPLUS1.jpg

365 ms

5_Lights_UK.jpg

5_Lights_UK.jpg

412 ms

LIGHTS1.jpg

LIGHTS1.jpg

404 ms

Banner_02.jpg

Banner_02.jpg

451 ms

SPECIALTY1.jpg

SPECIALTY1.jpg

448 ms

video_banner_English-3.jpg

video_banner_English-3.jpg

521 ms

service2.jpg

service2.jpg

475 ms

lighting.jpg

lighting.jpg

495 ms

mobile.jpg

mobile.jpg

503 ms

child-battery-safety.webp

child-battery-safety.webp

538 ms

chrome-cta.png

chrome-cta.png

539 ms

Learn_about.webp

Learn_about.webp

565 ms

Product_finder.webp

Product_finder.webp

584 ms

batt-logo.png

batt-logo.png

590 ms

arrow-left.png

arrow-left.png

524 ms

arrow-right.png

arrow-right.png

543 ms

collect

collect

15 ms

js

js

68 ms

Accessibility Review

energizer.co.uk accessibility score

98

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Best Practices

energizer.co.uk best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

energizer.co.uk SEO score

90

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

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 Energizer.co.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 Energizer.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.

Social Sharing Optimization

energizer.co.uk

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