https://gymshark.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
66
GRADE
D
FIX
2
REVIEW
0
PASS
4
INFO
0
Checks
64 PASS 2 FIX
FCO2 Per Page LoadAction26.06g CO2 per viewFIX
CO2 Per Page Load
Action26.06g CO2 per view
26.06g CO2 per view
Critical::
26.06g CO2 per page view
This page transfers 110.1 MB, producing an estimated 26.06g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.65g, network 5.39g, end-user device 20.02g.
Got: 26.06g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 3127.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 3127.7 kg of CO2 annually — equivalent to charging 390968 smartphones.
Info::
Green hosting reduces data center emissions
26.06g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 110.1 MB
Your site
26.06g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.65g
Network
5.39g
End-user device
20.02g
At 10,000 monthly views: Monthly: 260.6 kg · Annual: 3127.7 kg · ≈ 390968 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
26.06g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
26.06g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 4244% more
vs Target 5113% more
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Next.js, CDN: Cloudflare
Info::
Next.js: Verified by the Green Web Foundation
Info::
Cloudflare: 100% renewable energy for global network since 2019
Info::
Green hosting status based on known provider commitments
Green hosting detection uses a curated database of provider renewable energy commitments. This is not a real-time verification. For authoritative checks, visit thegreenwebfoundation.org.
Green Hosting✓ Green Hosted
Hosting Next.js✓CDN Cloudflare✓
Next.js: Verified by the Green Web Foundation
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 106 KB (vs 112765 KB first visit). 347 of 351 resources are served from browser cache, saving 26.04g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 26.06g)
First visit
112765 KB
Repeat visit
106 KB
100% reduction on repeat visits
Saving 26.04g CO2 per returning visitor
347 resources served from cache · 4 resources re-downloaded
A+Transfer Efficiency98% efficientPASS
Transfer Efficiency
98% efficient
98% efficient
Info::
Transfer efficiency: 98%
Only 1998 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 1998 KB (2% of page weight)
Unused JS 1998 KB
0.46g unnecessary CO2 per visit
Actual transfer 112765 KB
Theoretical minimum 110766 KB
Potential savings 1998 KB (0.46g CO2)
See Deep Analysis sections above for specific optimizations.
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.