Case Studies///
Recent Results from Website Carbon Reduction
These are real-world outcomes from reducing website bloat, removing unnecessary dependencies, and improving delivery efficiency.
Lower carbon. Faster load times. Better performance metrics.
Book Free Impact AssessmentCase study 01///
Communitee
Communitee is a tech-for-good company. Their site was built with heavy dependencies (including Angular) which increased page weight and energy use.
We refactored and re-coded key sections to remove bloat, reduce dependencies, and improve delivery efficiency.
The outcome: a dramatically lower carbon footprint and a major uplift in performance.
Results
| Carbon Reduction | |||
| Before | After | ||
| CO2 per page load | 0.79g | 0.07g | 91% reduction |
| Approximate Annual CO2 | 47.4kg | 4.2kg | 91% reduction |
| Higher CO2 than 70% of websites | Lower CO2 than 95% of websites | ||
| Performance Uplift | |||
| Before | After | ||
| Loading Speed | 1.56s | 0.24s | 7× faster |
| Bandwidth per page load | 3Mb | 0.2Mb | 93% reduction |
| Google Lighthouse Score | 26 | 99 | +73 points |
| Core Web Vitals | ❌ Fail All | ✓ Pass All | Speed Index: 7.2s → 1s |
Additional benefits
- Removed dependency on heavy code libraries and simplified delivery
- Improved SEO performance
- Monthly reporting
- Sustainable, privacy-compliant web analytics (no cookie banners)
"SHS helped us hit our sustainability goals. Our carbon footprint fell by 91%, and the improvement to commercial performance made it even more valuable."
— Andrew Fraser, Founder, Communitee
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