Tools & Wizards About Us
supermarket.co.uk screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

supermarket.co.uk

Supermarket UK - Money Saving Guides on Food, Energy, Finance, Travel

Page Load Speed

3.7 sec in total

First Response

231 ms

Resources Loaded

3 sec

Page Rendered

467 ms

supermarket.co.uk screenshot

About Website

Welcome to supermarket.co.uk homepage info - get ready to check Supermarket best content for United Kingdom right away, or after learning these important things about supermarket.co.uk

Supermarket UK offers help & advice on saving money on food,travel, energy, broadband, finance & Insurance. Browse the latest food offers from supemarkets.

Visit supermarket.co.uk

Key Findings

We analyzed Supermarket.co.uk page load time and found that the first response time was 231 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

supermarket.co.uk performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.5 s

0/100

10%

LCP (Largest Contentful Paint)

Value21.0 s

0/100

25%

SI (Speed Index)

Value33.7 s

0/100

10%

TBT (Total Blocking Time)

Value26,100 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.04

99/100

15%

TTI (Time to Interactive)

Value41.2 s

0/100

10%

Network Requests Diagram

supermarket.co.uk

231 ms

www.supermarket.co.uk

593 ms

home.css

171 ms

vchp.css

267 ms

template.css

669 ms

Our browser made a total of 213 requests to load all elements on the main page. We found that 47% of them (100 requests) were addressed to the original Supermarket.co.uk, 6% (13 requests) were made to Dsum.casalemedia.com and 6% (12 requests) were made to Delivery.platform.switchads.com. The less responsive or slowest element that took the longest time to load (669 ms) belongs to the original domain Supermarket.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 438.4 kB (64%)

Content Size

688.8 kB

After Optimization

250.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Supermarket.co.uk main page is 688.8 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. 50% of websites need less resources to load. Javascripts take 254.7 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 59.1 kB

  • Original 75.0 kB
  • After minification 65.6 kB
  • After compression 16.0 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 9.4 kB, which is 13% 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 59.1 kB or 79% of the original size.

Image Optimization

-46%

Potential reduce by 106.2 kB

  • Original 232.1 kB
  • After minification 125.9 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. Obviously, Supermarket needs image optimization as it can save up to 106.2 kB or 46% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-65%

Potential reduce by 165.3 kB

  • Original 254.7 kB
  • After minification 251.0 kB
  • After compression 89.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 165.3 kB or 65% of the original size.

CSS Optimization

-85%

Potential reduce by 107.7 kB

  • Original 127.0 kB
  • After minification 105.3 kB
  • After compression 19.2 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. Supermarket.co.uk needs all CSS files to be minified and compressed as it can save up to 107.7 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 114 (59%)

Requests Now

194

After Optimization

80

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 194 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Supermarket. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

supermarket.co.uk

supermarket.co.uk

231 ms

www.supermarket.co.uk

www.supermarket.co.uk

593 ms

home.css

home.css

171 ms

vchp.css

vchp.css

267 ms

template.css

template.css

669 ms

menu.css

menu.css

272 ms

common.js

common.js

285 ms

jquery.min.js

jquery.min.js

41 ms

jquery.hoverIntent.minified.js

jquery.hoverIntent.minified.js

255 ms

jquerymenu.js

jquerymenu.js

338 ms

ticker.js

ticker.js

356 ms

tag.php

tag.php

328 ms

brand

brand

13 ms

brand

brand

50 ms

tag.php

tag.php

184 ms

show_ads.js

show_ads.js

5 ms

tag.php

tag.php

179 ms

choixPubJS.htm

choixPubJS.htm

75 ms

ga.js

ga.js

23 ms

bg.jpg

bg.jpg

92 ms

supermarket-logo.jpg

supermarket-logo.jpg

268 ms

aldi.gif

aldi.gif

96 ms

asda.gif

asda.gif

85 ms

coop.gif

coop.gif

92 ms

iceland.gif

iceland.gif

91 ms

lidl.gif

lidl.gif

169 ms

mands.gif

mands.gif

180 ms

morrisons.gif

morrisons.gif

182 ms

netto.gif

netto.gif

183 ms

sainsburys.gif

sainsburys.gif

190 ms

tesco.gif

tesco.gif

252 ms

waitrose.gif

waitrose.gif

270 ms

button.jpg

button.jpg

272 ms

login.jpg

login.jpg

272 ms

register.jpg

register.jpg

285 ms

petrol.gif

petrol.gif

335 ms

vouchers.gif

vouchers.gif

364 ms

free.gif

free.gif

366 ms

signup.gif

signup.gif

366 ms

next.gif

next.gif

365 ms

breaking-r.gif

breaking-r.gif

380 ms

top-w.gif

top-w.gif

418 ms

news1.gif

news1.gif

463 ms

news2.gif

news2.gif

462 ms

news3.gif

news3.gif

461 ms

iguide.gif

iguide.gif

460 ms

fruit.gif

fruit.gif

475 ms

mini.gif

mini.gif

505 ms

cash.gif

cash.gif

573 ms

join.gif

join.gif

572 ms

twitter.png

twitter.png

573 ms

facebook.png

facebook.png

572 ms

logo_260.gif

logo_260.gif

576 ms

ajs.php

ajs.php

119 ms

__utm.gif

__utm.gif

12 ms

__utm.gif

__utm.gif

6 ms

40b91db8ee83cad91867fc829cbf7aaa.gif

40b91db8ee83cad91867fc829cbf7aaa.gif

511 ms

generic

generic

25 ms

sync_simple.php

sync_simple.php

328 ms

beacon.js

beacon.js

24 ms

menu-bg.gif

menu-bg.gif

449 ms

current-bg.gif

current-bg.gif

541 ms

sub_bg.png

sub_bg.png

638 ms

home.jpg

home.jpg

529 ms

dealoftheday-black.gif

dealoftheday-black.gif

528 ms

go-btn-pink.gif

go-btn-pink.gif

530 ms

plus.gif

plus.gif

529 ms

generic

generic

13 ms

info.php

info.php

166 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

25 ms

ajs.php

ajs.php

325 ms

info.php

info.php

306 ms

world.jpg

world.jpg

610 ms

petrol.jpg

petrol.jpg

600 ms

ff5.jpg

ff5.jpg

597 ms

usermatch

usermatch

12 ms

usermatch

usermatch

14 ms

pixel

pixel

15 ms

Vuopa8AoJVgAAFtifIAAAAC3%26629

Vuopa8AoJVgAAFtifIAAAAC3%26629

51 ms

casaleopenrtb

casaleopenrtb

4 ms

usersync.aspx

usersync.aspx

23 ms

info.php

info.php

168 ms

crum

crum

23 ms

sync_simple.php

sync_simple.php

186 ms

implement-r.js

implement-r.js

10 ms

a73d446f0394726cb0104f432d1fbbc3.gif

a73d446f0394726cb0104f432d1fbbc3.gif

422 ms

info.php

info.php

184 ms

pixel

pixel

30 ms

pixel.js

pixel.js

25 ms

pixel

pixel

30 ms

bgfree2.gif

bgfree2.gif

275 ms

bs5.jpg

bs5.jpg

272 ms

bs4.jpg

bs4.jpg

381 ms

travel.jpg

travel.jpg

383 ms

car.jpg

car.jpg

382 ms

crum

crum

21 ms

rum

rum

56 ms

all.js

all.js

166 ms

bs1.jpg

bs1.jpg

366 ms

ins5.jpg

ins5.jpg

366 ms

ins12.jpg

ins12.jpg

368 ms

ins13.jpg

ins13.jpg

452 ms

ins9.jpg

ins9.jpg

454 ms

col1.jpg

col1.jpg

462 ms

1a.gif

1a.gif

446 ms

2a.gif

2a.gif

453 ms

3a.gif

3a.gif

452 ms

4a.gif

4a.gif

540 ms

5a.gif

5a.gif

546 ms

6a.gif

6a.gif

546 ms

7a.gif

7a.gif

545 ms

8a.gif

8a.gif

545 ms

9a.gif

9a.gif

561 ms

10a.gif

10a.gif

617 ms

crum

crum

29 ms

crum

crum

29 ms

crum

crum

27 ms

ca-pub-0889711162937032.js

ca-pub-0889711162937032.js

47 ms

zrt_lookup.html

zrt_lookup.html

36 ms

show_ads_impl.js

show_ads_impl.js

51 ms

crum

crum

22 ms

pixel

pixel

12 ms

bgbottom.jpg

bgbottom.jpg

589 ms

col2.jpg

col2.jpg

590 ms

1b.gif

1b.gif

588 ms

ajs.php

ajs.php

267 ms

2b.gif

2b.gif

585 ms

3b.gif

3b.gif

593 ms

4b.gif

4b.gif

638 ms

ads

ads

274 ms

likebox.php

likebox.php

421 ms

osd.js

osd.js

12 ms

ads

ads

394 ms

usermatch

usermatch

31 ms

5b.gif

5b.gif

584 ms

6b.gif

6b.gif

584 ms

7b.gif

7b.gif

584 ms

8b.gif

8b.gif

583 ms

9b.gif

9b.gif

566 ms

gr

gr

15 ms

casale

casale

10 ms

ecs

ecs

27 ms

pixel.htm

pixel.htm

35 ms

info.php

info.php

180 ms

84 ms

crum

crum

7 ms

rum

rum

16 ms

xd_arbiter.php

xd_arbiter.php

120 ms

xd_arbiter.php

xd_arbiter.php

296 ms

pixel

pixel

28 ms

ecc

ecc

48 ms

crum

crum

7 ms

ddc.htm

ddc.htm

27 ms

rum

rum

28 ms

m

m

41 ms

rum

rum

9 ms

crum

crum

14 ms

10b.gif

10b.gif

530 ms

col3.jpg

col3.jpg

585 ms

electronics.jpg

electronics.jpg

586 ms

competitions.jpg

competitions.jpg

584 ms

holidays.jpg

holidays.jpg

585 ms

computers.jpg

computers.jpg

588 ms

rum

rum

44 ms

crum

crum

7 ms

388 ms

statistics.asp

statistics.asp

212 ms

track.js

track.js

215 ms

ebzformats.css

ebzformats.css

123 ms

ebzformats.js

ebzformats.js

129 ms

p

p

13 ms

info.php

info.php

183 ms

phones.jpg

phones.jpg

576 ms

shop.jpg

shop.jpg

583 ms

consoles.jpg

consoles.jpg

582 ms

cds.jpg

cds.jpg

582 ms

toys.jpg

toys.jpg

582 ms

flowers.jpg

flowers.jpg

583 ms

m_js_controller.js

m_js_controller.js

17 ms

abg.js

abg.js

30 ms

like_box.php

like_box.php

90 ms

favicon

favicon

52 ms

googlelogo_color_112x36dp.png

googlelogo_color_112x36dp.png

28 ms

nessie_icon_tiamat_white.png

nessie_icon_tiamat_white.png

23 ms

s

s

13 ms

x_button_blue2.png

x_button_blue2.png

8 ms

energy.gif

energy.gif

508 ms

bottomrightbag.jpg

bottomrightbag.jpg

589 ms

Lrq7Jibxdtv2QOPyDSqncpDfQFNs3PE6SoUrUNh2GTU.js

Lrq7Jibxdtv2QOPyDSqncpDfQFNs3PE6SoUrUNh2GTU.js

9 ms

hDvwL1_H7g-.css

hDvwL1_H7g-.css

171 ms

udqjbTyb5Ue.css

udqjbTyb5Ue.css

243 ms

q68gy-v_YMF.js

q68gy-v_YMF.js

327 ms

FJmpeSpHpjS.js

FJmpeSpHpjS.js

359 ms

0wM5s1Khldu.js

0wM5s1Khldu.js

289 ms

1bNoFZUdlYZ.js

1bNoFZUdlYZ.js

286 ms

favicon

favicon

51 ms

usersync.html

usersync.html

47 ms

push

push

158 ms

track-visibility.aspx

track-visibility.aspx

173 ms

usersync.html

usersync.html

24 ms

dsy.php

dsy.php

183 ms

usersync.html

usersync.html

95 ms

319273_10150329666623226_1522497144_n.jpg

319273_10150329666623226_1522497144_n.jpg

165 ms

1379841_10150004552801901_469209496895221757_n.jpg

1379841_10150004552801901_469209496895221757_n.jpg

195 ms

11202432_824583210985787_4583872610900488_n.jpg

11202432_824583210985787_4583872610900488_n.jpg

233 ms

10354686_10150004552801856_220367501106153455_n.jpg

10354686_10150004552801856_220367501106153455_n.jpg

267 ms

10433895_10204134169385966_8913402949081300265_n.jpg

10433895_10204134169385966_8913402949081300265_n.jpg

271 ms

wL6VQj7Ab77.png

wL6VQj7Ab77.png

66 ms

s7jcwEQH7Sx.png

s7jcwEQH7Sx.png

65 ms

dsy.php

dsy.php

171 ms

I6-MnjEovm5.js

I6-MnjEovm5.js

42 ms

pQrUxxo5oQp.js

pQrUxxo5oQp.js

76 ms

dsy.php

dsy.php

171 ms

Accessibility Review

supermarket.co.uk accessibility score

87

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

ARIA input fields do not have accessible names

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

supermarket.co.uk best practices score

83

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

supermarket.co.uk SEO score

83

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

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Supermarket.co.uk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Supermarket.co.uk main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

supermarket.co.uk

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