The P.E.E.R. Framework™
Our method for building websites that drive results and cut carbon. Four pillars. One clear standard.
Performance
Speed is a Sustainability Metric
Every extra second of load time burns energy. Faster sites use less server power, send less data, and drain fewer device resources.
- Load times under 1.4 seconds cut server energy by up to 40%
- Clean code paths use fewer CPU cycles
- Smart caching cuts repeat data transfers
- Lazy loading only fetches what the user needs right now
Experience
Accessible Design = Lower Energy Usage
Inclusive design is not just the right thing to do—it is more efficient. Accessible sites have cleaner code, simpler flows, and use less energy.
- Semantic HTML (clean, meaning-rich markup) eases browser workload
- Clear visual order stops users from feeling lost
- Keyboard nav removes the need for heavy mouse-tracking scripts
- Simpler animations save battery on phones and tablets
Emissions
Bytes to Carbon: The Formula
Digital carbon comes from data transfer, server work, and device energy use. We measure and cut every gram.
- The average web page emits 0.5g CO₂ per visit
- Better image handling can cut emissions by 60%
- Green hosting uses renewable energy sources
- CDN placement reduces data travel distance
Emissions Formula
CO₂ = (Data Transfer × Energy Intensity) + (Server Time × Power Usage) + (Device Processing × Avg. Watts)
Ranking
Google Rewards Efficient Sites
Search engines now favour fast, accessible, low-impact sites. Core Web Vitals (Google's speed and UX metrics) are ranking factors. Lean sites rank higher.
- Page Experience is a confirmed Google ranking factor
- Mobile-first indexing rewards lean, fast sites
- Fast loads keep visitors on-page, which boosts rankings
- Good accessibility goes hand in hand with stronger SEO
Ready to Apply the P.E.E.R. Framework?
Get a full audit of your website against our four-pillar standard.