Tools & Wizards About Us
swelluk.co.uk screenshot

Report Summary

  • 10

    Performance

    Renders faster than
    23% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

swelluk.co.uk

Swell UK - The UK's biggest online aquatic specialist

Page Load Speed

7.8 sec in total

First Response

680 ms

Resources Loaded

5.6 sec

Page Rendered

1.5 sec

swelluk.co.uk screenshot

About Website

Click here to check amazing Swell UK content. Otherwise, check out these important facts you probably never knew about swelluk.co.uk

Shop premium pond and aquarium supplies with free UK delivery available! Explore pond liner, fish tank, pond pump, pond filter, fish for sale & more!

Visit swelluk.co.uk

Key Findings

We analyzed Swelluk.co.uk page load time and found that the first response time was 680 ms and then it took 7.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

swelluk.co.uk performance score

10

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

37/100

10%

LCP (Largest Contentful Paint)

Value20.9 s

0/100

25%

SI (Speed Index)

Value6.8 s

35/100

10%

TBT (Total Blocking Time)

Value2,010 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0.841

4/100

15%

TTI (Time to Interactive)

Value18.0 s

3/100

10%

Network Requests Diagram

www.swelluk.com

680 ms

calendar.css

31 ms

styles.css

38 ms

tooltipster.min.css

31 ms

button.css

29 ms

Our browser made a total of 149 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Swelluk.co.uk, 7% (10 requests) were made to Fonts.gstatic.com and 1% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (2.5 sec) relates to the external source Swelluk.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 593.2 kB (9%)

Content Size

6.3 MB

After Optimization

5.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Swelluk.co.uk main page is 6.3 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. 80% 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 5.5 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 354.4 kB

  • Original 412.8 kB
  • After minification 388.0 kB
  • After compression 58.5 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. 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 354.4 kB or 86% of the original size.

Image Optimization

-4%

Potential reduce by 238.8 kB

  • Original 5.5 MB
  • After minification 5.3 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. Swell UK images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 56 B

  • Original 301.6 kB
  • After minification 301.6 kB
  • After compression 301.5 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 38 B

  • Original 74.5 kB
  • After minification 74.5 kB
  • After compression 74.5 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. Swelluk.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 15 (11%)

Requests Now

137

After Optimization

122

  • Images
  • JavaScript
  • CSS

The browser has sent 137 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Swell UK. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.swelluk.com

www.swelluk.com

680 ms

calendar.css

calendar.css

31 ms

styles.css

styles.css

38 ms

tooltipster.min.css

tooltipster.min.css

31 ms

button.css

button.css

29 ms

styles.css

styles.css

59 ms

styles.css

styles.css

61 ms

css2

css2

60 ms

font-awesome.min.css

font-awesome.min.css

65 ms

logo-light.svg

logo-light.svg

62 ms

5-star.svg

5-star.svg

422 ms

logo-feefo.svg

logo-feefo.svg

80 ms

logo.svg

logo.svg

80 ms

qkBIXvYC6trAT55ZBi1ueQVIjQTD-JqqFA.ttf

qkBIXvYC6trAT55ZBi1ueQVIjQTD-JqqFA.ttf

341 ms

qkBIXvYC6trAT55ZBi1ueQVIjQTDppqqFA.ttf

qkBIXvYC6trAT55ZBi1ueQVIjQTDppqqFA.ttf

341 ms

qkBIXvYC6trAT55ZBi1ueQVIjQTDH52qFA.ttf

qkBIXvYC6trAT55ZBi1ueQVIjQTDH52qFA.ttf

439 ms

Desktop_main_1440x480.jpg

Desktop_main_1440x480.jpg

380 ms

Mobile_main_640x605.jpg

Mobile_main_640x605.jpg

772 ms

shop_pond_400x400.jpg

shop_pond_400x400.jpg

771 ms

shop_aquarium_4_400x400_1.jpg

shop_aquarium_4_400x400_1.jpg

667 ms

shop_marine_3_400x400.jpg

shop_marine_3_400x400.jpg

773 ms

shop_livestock_400x400.jpg

shop_livestock_400x400.jpg

668 ms

Desktop_Secondary_Main_4.jpg

Desktop_Secondary_Main_4.jpg

471 ms

Mobile_Secondary_Main_5.jpg

Mobile_Secondary_Main_5.jpg

831 ms

best_sellers_300x300.jpg

best_sellers_300x300.jpg

975 ms

Marine_Supplies_Desktop_2115x414.jpg

Marine_Supplies_Desktop_2115x414.jpg

1227 ms

su_997_-_swell_anti_kink_pond_hose.png

su_997_-_swell_anti_kink_pond_hose.png

1260 ms

25_year.png

25_year.png

1198 ms

Labels_-_v4_-_07062024_Pond_Sale.png

Labels_-_v4_-_07062024_Pond_Sale.png

773 ms

pond-pipework-fittings-double-wire-hose-clips_new.jpg

pond-pipework-fittings-double-wire-hose-clips_new.jpg

1101 ms

white_pond_liner_1_.png

white_pond_liner_1_.png

1222 ms

swla0272yr40_c_1__1.png

swla0272yr40_c_1__1.png

1386 ms

liner-newhd_40.png

liner-newhd_40.png

1348 ms

Swell_Brand_400x400_1.jpg

Swell_Brand_400x400_1.jpg

1619 ms

Pond_Liner_Calculator_400x400.jpg

Pond_Liner_Calculator_400x400.jpg

1647 ms

AQ_Brand_400x400.jpg

AQ_Brand_400x400.jpg

1657 ms

Pond_Pump_Calculator_400x400.jpg

Pond_Pump_Calculator_400x400.jpg

1686 ms

CategoryBlocks_Pond.jpg

CategoryBlocks_Pond.jpg

1847 ms

CategoryBlocks_Aquarium.jpg

CategoryBlocks_Aquarium.jpg

1808 ms

CategoryBlocks_Marine.jpg

CategoryBlocks_Marine.jpg

2058 ms

livestock_2_3.jpg

livestock_2_3.jpg

2071 ms

pond.jpg

pond.jpg

2079 ms

aquarium.jpg

aquarium.jpg

1706 ms

offers.jpg

offers.jpg

1721 ms

clearance.jpg

clearance.jpg

2068 ms

7_-_Fish_Tanks_Decor_copy_2.png

7_-_Fish_Tanks_Decor_copy_2.png

2260 ms

8_-_Aquarium_Lighting_copy_4.png

8_-_Aquarium_Lighting_copy_4.png

2294 ms

10_-_Aquarium_Treatments_Food_and_Planting_copy_4.png

10_-_Aquarium_Treatments_Food_and_Planting_copy_4.png

2077 ms

AquaticBF_Fish_Tanks_and_Decor_1.jpg

AquaticBF_Fish_Tanks_and_Decor_1.jpg

2089 ms

AquaticBF_Aquarium_Lighting.jpg

AquaticBF_Aquarium_Lighting.jpg

2503 ms

klarna.js

klarna.js

340 ms

klaviyo.js

klaviyo.js

459 ms

54557.js

54557.js

245 ms

28ab37f56aa2e78c7129623d09297d94.min.js

28ab37f56aa2e78c7129623d09297d94.min.js

1819 ms

rocket-loader.min.js

rocket-loader.min.js

1806 ms

qkBKXvYC6trAT7RQNNK2EG7SIwPWMNmlUElP.ttf

qkBKXvYC6trAT7RQNNK2EG7SIwPWMNmlUElP.ttf

128 ms

qkBKXvYC6trAT7RQNNK2EG7SIwPWMNlCV0lP.ttf

qkBKXvYC6trAT7RQNNK2EG7SIwPWMNlCV0lP.ttf

128 ms

qkBKXvYC6trAT7RQNNK2EG7SIwPWMNkcV0lP.ttf

qkBKXvYC6trAT7RQNNK2EG7SIwPWMNkcV0lP.ttf

251 ms

nKKU-Go6G5tXcr5mOCWg.ttf

nKKU-Go6G5tXcr5mOCWg.ttf

319 ms

nKKZ-Go6G5tXcoaS.ttf

nKKZ-Go6G5tXcoaS.ttf

319 ms

nKKU-Go6G5tXcr4-OSWg.ttf

nKKU-Go6G5tXcr4-OSWg.ttf

320 ms

nKKU-Go6G5tXcr4uPiWg.ttf

nKKU-Go6G5tXcr4uPiWg.ttf

320 ms

icons.woff

icons.woff

1710 ms

AquaticBF_Aquarium_Food.jpg

AquaticBF_Aquarium_Food.jpg

2044 ms

9_-_Aquarium_Filtration_and_Water_Quality_copy_3.png

9_-_Aquarium_Filtration_and_Water_Quality_copy_3.png

1447 ms

11_-_Aquarium_Maintenance_copy_7.png

11_-_Aquarium_Maintenance_copy_7.png

1364 ms

13_-_Aquarium_Livestock_1.png

13_-_Aquarium_Livestock_1.png

1380 ms

12_-_Aquarium_Clearance_copy_5.png

12_-_Aquarium_Clearance_copy_5.png

1805 ms

AquaticBF_Aquarium_Filtration.jpg

AquaticBF_Aquarium_Filtration.jpg

1827 ms

AquaticBF_Aquarium_Maintenance.jpg

AquaticBF_Aquarium_Maintenance.jpg

1491 ms

Aquarium_CW_2.jpg

Aquarium_CW_2.jpg

1465 ms

1_-_Pond_Pumps_copy_2.png

1_-_Pond_Pumps_copy_2.png

1324 ms

2_-_Pond_Construction_copy_6.png

2_-_Pond_Construction_copy_6.png

1196 ms

3_-_Planting_copy_6.png

3_-_Planting_copy_6.png

1106 ms

AquaticBF_Pond_Pumps.jpg

AquaticBF_Pond_Pumps.jpg

1426 ms

AquaticBF_Pond_Construction.jpg

AquaticBF_Pond_Construction.jpg

1440 ms

AquaticBF_Pond_Planting.jpg

AquaticBF_Pond_Planting.jpg

1673 ms

4_-_Food_copy_6.png

4_-_Food_copy_6.png

1278 ms

5_-_Filters_copy_4.png

5_-_Filters_copy_4.png

1205 ms

13_-_Pond_Livestock.png

13_-_Pond_Livestock.png

998 ms

6_-_Clearance_copy_2.png

6_-_Clearance_copy_2.png

1387 ms

AquaticBF_Pond_Food.jpg

AquaticBF_Pond_Food.jpg

1389 ms

AquaticBF_Pond_Filtration.jpg

AquaticBF_Pond_Filtration.jpg

1307 ms

Pond_CW_1.jpg

Pond_CW_1.jpg

968 ms

7_-_Fish_Tanks_Decor_copy_3.png

7_-_Fish_Tanks_Decor_copy_3.png

966 ms

8_-_Aquarium_Lighting_copy_5.png

8_-_Aquarium_Lighting_copy_5.png

893 ms

AquaticBF_Fish_Tanks_and_Decor_2.jpg

AquaticBF_Fish_Tanks_and_Decor_2.jpg

1282 ms

AquaticBF_Aquarium_Lighting_1.jpg

AquaticBF_Aquarium_Lighting_1.jpg

669 ms

10_-_Aquarium_Treatments_Food_and_Planting_copy_5.png

10_-_Aquarium_Treatments_Food_and_Planting_copy_5.png

678 ms

9_-_Aquarium_Filtration_and_Water_Quality_copy_4.png

9_-_Aquarium_Filtration_and_Water_Quality_copy_4.png

1102 ms

AquaticBF_Aquarium_Food_1.jpg

AquaticBF_Aquarium_Food_1.jpg

1294 ms

AquaticBF_Aquarium_Filtration_1.jpg

AquaticBF_Aquarium_Filtration_1.jpg

928 ms

11_-_Aquarium_Maintenance_copy_8.png

11_-_Aquarium_Maintenance_copy_8.png

1342 ms

12_-_Aquarium_Clearance_copy_6.png

12_-_Aquarium_Clearance_copy_6.png

1361 ms

AquaticBF_Aquarium_Maintenance_1.jpg

AquaticBF_Aquarium_Maintenance_1.jpg

1379 ms

Aquarium_CW_3.jpg

Aquarium_CW_3.jpg

1446 ms

1_-_Pond_Pumps_copy_3.png

1_-_Pond_Pumps_copy_3.png

1063 ms

2_-_Pond_Construction_copy_7.png

2_-_Pond_Construction_copy_7.png

1097 ms

AquaticBF_Pond_Pumps_1.jpg

AquaticBF_Pond_Pumps_1.jpg

1354 ms

AquaticBF_Pond_Construction_1.jpg

AquaticBF_Pond_Construction_1.jpg

1524 ms

3_-_Planting_copy_7.png

3_-_Planting_copy_7.png

1575 ms

4_-_Food_copy_7.png

4_-_Food_copy_7.png

1578 ms

AquaticBF_Pond_Planting_1.jpg

AquaticBF_Pond_Planting_1.jpg

1611 ms

AquaticBF_Pond_Food_1.jpg

AquaticBF_Pond_Food_1.jpg

1377 ms

5_-_Filters_copy_5.png

5_-_Filters_copy_5.png

1336 ms

6_-_Clearance_copy_3.png

6_-_Clearance_copy_3.png

1753 ms

AquaticBF_Pond_Filtration_1.jpg

AquaticBF_Pond_Filtration_1.jpg

1192 ms

Pond_CW_2.jpg

Pond_CW_2.jpg

1302 ms

bio_cover_png.png

bio_cover_png.png

1233 ms

swla0463_-_6_edited.png

swla0463_-_6_edited.png

1236 ms

swla0466_-_6_edited.png

swla0466_-_6_edited.png

1242 ms

multibuy_1.png

multibuy_1.png

1230 ms

swla0465_-_6_edited.png

swla0465_-_6_edited.png

1635 ms

swla0840.png

swla0840.png

1220 ms

swla0962_-_5_edited.png

swla0962_-_5_edited.png

1729 ms

swla0934.png

swla0934.png

1217 ms

1m_straight_2.png

1m_straight_2.png

1581 ms

titan01_1_.png

titan01_1_.png

1211 ms

socket.png

socket.png

1204 ms

tee.png

tee.png

1519 ms

90_degree.png

90_degree.png

1031 ms

swla0197_a_1__1_1_1.jpg

swla0197_a_1__1_1_1.jpg

1383 ms

star-inactive.svg

star-inactive.svg

1070 ms

star-active.svg

star-active.svg

1058 ms

aquael_leddy_60_aquarium_day_night_1.png

aquael_leddy_60_aquarium_day_night_1.png

1067 ms

swla0272yr40_c_1_.png

swla0272yr40_c_1_.png

1004 ms

gprlqyvtjazcg84tvtxw_fresh_test_kit_clipped_rev_1_grande_copy_2__1.jpg

gprlqyvtjazcg84tvtxw_fresh_test_kit_clipped_rev_1_grande_copy_2__1.jpg

978 ms

swlrcsv_blue_1.png

swlrcsv_blue_1.png

1347 ms

23_-_liquid_freshwater_master_test_kit_1.jpg

23_-_liquid_freshwater_master_test_kit_1.jpg

1038 ms

Feefob.png

Feefob.png

923 ms

Asset_3_13_2_1_.png

Asset_3_13_2_1_.png

1124 ms

Asset_3_13_2_1__1.png

Asset_3_13_2_1__1.png

853 ms

Asset_3_13_2_1__2.png

Asset_3_13_2_1__2.png

843 ms

Asset_3_13_2_1__3.png

Asset_3_13_2_1__3.png

767 ms

Algae_fish_tank_naturallyb_2_1.jpg

Algae_fish_tank_naturallyb_2_1.jpg

719 ms

fish_swimming_top_tankb_2_1.jpg

fish_swimming_top_tankb_2_1.jpg

714 ms

eight_best_tropical_fishb_2_1.jpg

eight_best_tropical_fishb_2_1.jpg

688 ms

change_aquarium_filterb_2_1.jpg

change_aquarium_filterb_2_1.jpg

682 ms

Visa_1.png

Visa_1.png

592 ms

Mastercard_1.png

Mastercard_1.png

591 ms

Maestro_1.png

Maestro_1.png

584 ms

PayPal_1.png

PayPal_1.png

566 ms

Klarna_1.png

Klarna_1.png

575 ms

Apple_Pay_1.png

Apple_Pay_1.png

565 ms

PayPal_Pay_Later_1.png

PayPal_Pay_Later_1.png

552 ms

print.css

print.css

17 ms

c2cbf43f-a4e2-4091-aa07-9ad79cbb7aad

c2cbf43f-a4e2-4091-aa07-9ad79cbb7aad

194 ms

bundle-common.min.js

bundle-common.min.js

56 ms

bundle-cms.min.js

bundle-cms.min.js

15 ms

Accessibility Review

swelluk.co.uk accessibility score

74

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-*] attributes do not match their roles

High

[role]s do not have all required [aria-*] attributes

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.

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

swelluk.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

Missing source maps for large first-party JavaScript

SEO Factors

swelluk.co.uk SEO score

84

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Swelluk.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 Swelluk.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

swelluk.co.uk

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