Luxury Fashion Website Carbon, CWV & PageSpeed Comparison

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We reviewed over 65 luxury fashion websites, reviewing performance, sustainability, and user-friendliness. Focusing on core performance metrics, such as Digital Carbon Emissions (CO₂e), Site Performance (PERF), SEO, Accessibility (ACS), and Best Practices (BP).



Performance Data

  • Both mobile and desktop sites scored an average of 58.12 for PageSpeed, with most luxury brand websites from Europe (London).
  • Performance scores varied quite a bit, with some websites, like corneliani.com, running super smoothly while others, like Isaia, that could use a little tune-up.

Carbon Emissions (CO₂e)

  • CO₂e values ranged widely, with emissions from 0.013 g to 6.166 g per site with an average of 1.162 g.
  • Websites with lower CO₂e values include corneliani.com (0.013 g), reflecting better optimisation, while Isaia displayed the highest emissions (6.166 g), indicating potential inefficiencies with code, images, and video.

Core Web Vitals (CWV) Performance

  • Many websites failed to meet Core Web Vitals standards, highlighting areas for improvement, especially on mobile performance.
  • Few websites passed CWV standards, with many failing due to issues like PageSpeed and load efficiency, which are critical for reducing digital emissions and improving performance.
  • Sites that met CWV standards (e.g., furla.com and burberry.com) demonstrate lower environmental impact, indicating that CWV alignment supports a reduced digital carbon footprint.

Top Performers in Various Metrics

  • Performance: High-performing sites included fendi.com (78) and tomford.com (96).
  • SEO and Accessibility: Websites like tiffany.com, celine.com, and cartier.com scored excellently in both SEO and accessibility.
  • Best Practices (BP): Sites such as corneliani.com, chanel.com, and burberry.com scored 100 in Best Practices, indicating adherence to industry standards and high-quality code practices.

Overall Assessment

  • We saw some top performers too! Fendi.com and tomford.com impressed with their overall speed, while tiffany.com, celine.com, and cartier.com stood out for being both easy to find in search engines (SEO) and super accessible for everyone.
  • When it comes to following the industry best practices, corneliani.com, chanel.com, and burberry.com got top marks, showing they're setting the bar high for website code quality. 
  • Many sites with "Very Poor" performance were characterised by high CO₂e emissions and low accessibility scores, indicating a need for efficiency improvements in these areas to align with sustainable and accessible web standards.
  • The analysis shows that by reducing CO₂e emissions through optimised web practices and using the right technology, luxury brands can align their digital presence with sustainability initiatives, which increasingly matter to eco-conscious consumers.
  • Efficiency in web performance supports sustainability and enhances user experience, a critical factor for luxury brands aiming to meet high consumer expectations.

Recommendations for Improvement

  • Implementing efficient hosting, compressing media files, optimising mobile experiences, and improving CWV scores can all contribute to a lower digital carbon footprint.
  • Regular audits and performance tracking using SiteBeacon can ensure ongoing improvements, helping brands minimise their environmental impact and meet the growing demand for sustainable digital practices.

Find out the in-depth data analysis here.


Performance and CO₂e Analysis Table for 65+ UK-based Luxury Fashion Websites

Audited in April

Region:
  • Europe (London)

Top Luxury Fashion Websites

SerialURL
01fentybeauty.comFailed8.932 g 3 92 100 73Very Poor
02gb.maxmara.comFailed2.221 g 43 85 70 77Very Poor
03int.balmain.com/enFailed1.344 g 33 100 84 96Very Poor
04laperla.comFailed5.746 gN/A 82 100 77Very Poor
05malo.comFailed7.537 g 32 100 83 92Very Poor
06uk.diesel.com/enFailed1.580 g 33 100 89 73Very Poor
07uk.mcmworldwide.com/en_GB/homeFailed0.417 g 43 85 75 96Good
08us.canali.comPassed4.787 g 26 100 79 54Very Poor
09us.jimmychoo.com/en/homeFailed2.238 g 29 92 91 100Very Poor
10us.lanvin.comFailed9.390 g 30 100 96 92Very Poor
11us.louisvuitton.com/eng-us/homep...Failed0.096 g 97 42 94 92Excellent
12www.alexandermcqueen.com/en-gbFailed3.111 g 26 92 93 96Very Poor
13www.andrelaug.comN/A0.496 g 62 100 93 100Moderate
14www.audemarspiguet.com/com/en/ho...Failed8.001 g 30 92 88 81Very Poor
15www.berluti.com/en-int/homepageFailed5.519 g 39 92 79 54Very Poor
16www.borsalino.com/us_enFailed2.864 g 27 92 70 85Very Poor
17www.bottegaveneta.com/en-gbPassed1.419 g 41 85 82 96Very Poor
18www.braccialini.it/en/GB/homeFailed1.244 g 43 92 81 100Very Poor
19www.brioni.com/en/usFailed2.093 g 37 92 90 96Very Poor
20www.brunellocucinelli.com/en/hom...Failed1.299 g 58 100 88 77Very Poor
21www.bulgari.com/en-gbFailed1.009 g 54 100 100 100Very Poor
22www.burberry.comPassed0.283 g 62 82 88 77Very Good
23www.cartier.com/nl-beFailed1.421 g 17 85 84 77Very Poor
24www.celine.com/en-us/homeFailed2.611 g 5 77 77 100Very Poor
25www.cesareattolini.comFailed9.013 g 35 100 95 96Very Poor
26www.chanel.com/be-frFailed0.752 g 19 92 100 96Poor
27www.corneliani.comFailed5.735 g 34 100 96 73Very Poor
28www.dkny.comFailed1.448 g 49 92 89 69Very Poor
29www.escada.comPassed1.147 g 49 85 84 92Very Poor
30www.etro.com/gb-enFailed2.005 g 28 92 99 96Very Poor
31www.fendi.com/gb-enFailed2.014 g 66 100 100 100Very Poor
32www.fiorucci.comFailed1.528 g 40 77 84 92Very Poor
33www.franckmuller.comFailed2.872 g 27 92 95 96Very Poor
34www.furla.com/us/enFailed1.360 g 31 100 83 92Very Poor
35www.genny.comFailed1.081 g 84 100 87 96Very Poor
36www.gucci.com/uk/en_gbFailed1.408 g 5 92 92 96Very Poor
37www.hugoboss.com/uk/homePassed1.159 g 28 92 87 81Very Poor
38www.isaia.itFailed1.474 g 30 100 97 92Very Poor
39www.jerome-dreyfuss.com/enFailed1.160 g 46 92 89 92Very Poor
40www.jilsander.com/en-usFailed1.998 g 44 92 75 73Very Poor
41www.kenzo.com/en-gb/homeFailed2.004 g 36 100 89 81Very Poor
42www.lardini.comFailed1.367 g 52 92 92 77Very Poor
43www.larusmiani.itFailed1.963 g 49 100 89 96Very Poor
44www.loewe.com/eur/es/homeFailed1.393 g 33 100 87 92Very Poor
45www.lucianobarbera.comFailed3.411 g 50 85 86 92Very Poor
46www.marcjacobs.com/us-en/homepag...Failed3.485 g 44 92 89 73Very Poor
47www.marianorubinacci.com/itPassed2.086 g 41 85 89 100Very Poor
48www.marni.com/en-usFailed2.240 g 36 100 84 73Very Poor
49www.michaelkors.global/au/enFailed3.158 g 33 100 90 77Very Poor
50www.miumiu.com/fi/en.htmlFailed4.266 g 28 85 76 54Very Poor
51www.moschino.comFailed2.922 g 31 85 75 54Very Poor
52www.moynat.comFailed10.944 g 41 92 73 92Very Poor
53www.ninaricci.com/en-usFailed3.851 g 26 100 84 77Very Poor
54www.omegawatches.comFailed1.992 g 38 100 97 96Very Poor
55www.oscardelarenta.comPassed2.702 g 40 92 97 92Very Poor
56www.palzileri.com/ukN/A0.881 g 38 92 92 92Very Poor
57www.paulsmith.comFailed1.516 g 27 92 93 88Very Poor
58www.paulstuart.comFailed0.003 g 100 36 96 96Excellent
59www.pinko.com/it-itFailed4.281 g 31 100 90 96Very Poor
60www.piquadro.comFailed16.920 g 28 92 97 73Very Poor
61www.pomellato.com/gb_enFailed17.506 g 17 92 73 100Very Poor
62www.prada.com/gb/en.htmlFailed4.663 g 29 85 71 96Very Poor
63www.ralphlauren.comFailed3.611 g 29 83 75 54Very Poor
64www.rolex.comFailed1.588 g 28 92 86 58Very Poor
65www.rouje.comFailed2.014 g 36 92 60 88Very Poor
66www.tiffany.comFailed10.663 g 35 92 78 73Very Poor
67www.tomfordfashion.comFailed2.119 g 32 92 89 96Very Poor
68www.toryburch.com/en-gbFailed3.986 g 36 92 82 96Very Poor
69www.verawang.comFailed1.162 g 61 92 87 96Very Poor
70www.versace.com/us/enFailed2.128 g 30 92 77 54Very Poor
71www.ysl.com/en-gbFailed1.381 g 45 92 96 96Very Poor
72www.zegna.com/us-enFailed1.639 g 34 92 81 50Very Poor
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