Luxury Fashion Website Carbon, CWV & PageSpeed Comparison

In our August audit, we’ve identified a critical disconnect between high-end craftsmanship and digital execution. A 91.6% failure rate in Mobile Core Web Vitals, combined with a staggering 94.6% failure to reach perfect accessibility, suggests that luxury brands are inadvertently creating an "exclusive" experience that is actually exclusionary.

True luxury should be defined by seamless, inclusive elegance. By neglecting accessibility, brands are diluting their equity and failing to meet the sophisticated digital standards of the modern consumer. The 8.5% of leaders who have optimised their stack have proven that high-fidelity visuals do not have to come at the cost of performance or inclusivity.

Industry Snapshot (August 2026)

CWV Failure Rate

Mobile: 91.55%

Desktop: 67.61%

Accessibility (Perfect 100)

Mobile: Only 5.41%

Desktop: Only 5.41%

Avg. Carbon (CO2e)

Mobile: 2.76g

Desktop: 2.94g

Benchmark your website against your competitors for free with SiteIQ Audit.

Monitor & optimise your website with SiteBeacon.

Serial	URL
01	fentybeauty.com	Failed	3.157 g	29	100	90	73	Very Poor
02	fila.co.uk	Failed	2.126 g	33	92	89	92	Very Poor
03	gb.maxmara.com	Failed	2.106 g	36	85	80	77	Very Poor
04	int.balmain.com/en	Failed	0.039 g	99	82	77	100	Excellent
05	larusmiani.com	Failed	3.941 g	65	92	96	92	Very Poor
06	malo.com	Failed	2.117 g	42	100	87	92	Very Poor
07	uk.diesel.com/en	Failed	1.722 g	54	100	89	73	Very Poor
08	uk.mcmworldwide.com/en_GB/home	Failed	0.712 g	67	85	76	96	Poor
09	us.canali.com	Passed	4.360 g	27	100	81	73	Very Poor
10	us.jimmychoo.com/en/home	Failed	2.422 g	34	92	83	100	Very Poor
11	us.lanvin.com	Failed	6.145 g	41	92	93	92	Very Poor
12	us.louisvuitton.com/eng-us/homep...	Failed	0.100 g	96	45	94	92	Excellent
13	www.andrelaug.com	N/A	0.502 g	66	100	93	100	Moderate
14	www.armani.com/en-gb	Failed	3.755 g	30	100	96	96	Very Poor
15	www.audemarspiguet.com/us/en/hom...	Failed	7.239 g	34	92	88	81	Very Poor
16	www.berluti.com/en-int/homepage	Failed	0.975 g	54	92	80	81	Very Poor
17	www.borsalino.com/us_en	Failed	2.061 g	38	92	72	96	Very Poor
18	www.bottegaveneta.com/en-gb	Passed	1.105 g	52	85	82	96	Very Poor
19	www.braccialini.it/en/GB/home	Failed	0.897 g	46	92	81	96	Very Poor
20	www.brioni.com/en/us	Failed	2.245 g	49	92	93	96	Very Poor
21	www.brunellocucinelli.com/en/hom...	Failed	1.363 g	71	100	88	77	Very Poor
22	www.bulgari.com/en-gb	Failed	1.945 g	46	100	98	100	Very Poor
23	www.burberry.com	Passed	0.228 g	71	82	88	100	Very Good
24	www.cartier.com/en-us/home	Failed	2.661 g	25	92	93	96	Very Poor
25	www.celine.com/en-us/home	Failed	1.639 g	37	69	77	100	Very Poor
26	www.cesareattolini.com	Failed	11.680 g	36	100	95	96	Very Poor
27	www.corneliani.com	Failed	4.689 g	44	92	89	73	Very Poor
28	www.dkny.com	Failed	1.837 g	53	92	90	69	Very Poor
29	www.escada.com	Passed	0.912 g	55	85	89	92	Very Poor
30	www.etro.com/gb-en	Failed	2.008 g	24	92	100	96	Very Poor
31	www.fendi.com/gb-en	Failed	1.307 g	61	100	100	100	Very Poor
32	www.fiorucci.com	Failed	1.883 g	57	85	89	73	Very Poor
33	www.franckmuller.com	Failed	3.041 g	35	92	95	96	Very Poor
34	www.furla.com/us/en	Failed	1.426 g	32	100	83	92	Very Poor
35	www.genny.com	Failed	7.491 g	51	92	88	92	Very Poor
36	www.gucci.com	Failed	0.532 g	35	92	100	96	Moderate
37	www.hugoboss.com/uk/home	Failed	1.160 g	36	92	87	96	Very Poor
38	www.iceberg.com/country-chooser	N/A	1.209 g	89	58	89	96	Very Poor
39	www.isaia.it	Failed	1.995 g	40	100	93	92	Very Poor
40	www.jerome-dreyfuss.com/en	Failed	6.375 g	39	85	88	88	Very Poor
41	www.jilsander.com/en-se	Failed	1.753 g	45	92	75	73	Very Poor
42	www.kenzo.com/en-gb/home	Failed	1.621 g	36	100	89	81	Very Poor
43	www.laperla.com/it-it	Failed	1.011 g	43	100	91	92	Very Poor
44	www.lardini.com	Failed	1.471 g	32	92	93	96	Very Poor
45	www.loewe.com/eur/es/home	Failed	0.819 g	29	100	95	96	Poor
46	www.lucianobarbera.com	Failed	2.433 g	72	85	86	92	Very Poor
47	www.marcjacobs.com/us-en/home	Failed	1.441 g	55	100	97	73	Very Poor
48	www.marianorubinacci.com/it	Passed	2.567 g	52	85	89	96	Very Poor
49	www.marni.com/en-se	Failed	1.564 g	37	100	84	73	Very Poor
50	www.michaelkors.global/au/en	Failed	3.322 g	43	100	89	73	Very Poor
51	www.miumiu.com/be/fr.html	Failed	3.816 g	57	92	86	73	Very Poor
52	www.moschino.com	Failed	3.486 g	37	85	72	54	Very Poor
53	www.moynat.com	Failed	11.102 g	56	92	72	92	Very Poor
54	www.ninaricci.com/en-us	Failed	3.736 g	27	100	84	73	Very Poor
55	www.omegawatches.com	Failed	2.503 g	41	100	97	96	Very Poor
56	www.oscardelarenta.com	Failed	1.629 g	43	92	97	88	Very Poor
57	www.palzileri.com/country-picker	N/A	0.149 g	92	92	96	100	Excellent
58	www.paulsmith.com	Failed	1.335 g	35	92	93	88	Very Poor
59	www.paulstuart.com	Failed	2.096 g	48	85	100	92	Very Poor
60	www.pinko.com/it-it	Passed	7.042 g	29	92	85	92	Very Poor
61	www.piquadro.com	Failed	17.512 g	38	92	97	73	Very Poor
62	www.pomellato.com/us_en	Failed	1.956 g	34	92	77	100	Very Poor
63	www.prada.com/gb/en.html	Failed	1.690 g	53	85	72	77	Very Poor
64	www.pucci.com	Failed	5.223 g	29	92	91	73	Very Poor
65	www.ralphlauren.com	Failed	3.840 g	11	83	77	54	Very Poor
66	www.robertocavalli.com/en-nl	Failed	4.809 g	27	92	92	73	Very Poor
67	www.rolex.com	Failed	1.001 g	32	100	85	54	Very Poor
68	www.rouje.com	Failed	2.335 g	50	92	60	69	Very Poor
69	www.tomfordfashion.com	Failed	1.345 g	47	92	89	92	Very Poor
70	www.toryburch.com/en-gb	Failed	1.119 g	47	92	81	100	Very Poor
71	www.verawang.com	Failed	1.255 g	60	92	88	92	Very Poor
72	www.versace.com/us/en	Failed	2.240 g	36	92	78	54	Very Poor
73	www.ysl.com	Failed	0.166 g	N/A	82	94	69	Excellent
74	www.zegna.com/us-en	Failed	1.734 g	43	92	81	50	Very Poor

Serial

URL