Performance Engineering
Pagespeed - the need for speed in a digital world
For online companies, a slow loading website can be disastrous. Poor page performance can cause significant issues affecting the overall customer experience.
The longer your page takes to load, the higher the chance that a customer will leave the site. As well as reputational damage, that poor user experience can result in fewer conversions and a loss of revenue.
Our Pagespeed Leaderboard
We actively look at the world's largest companies' websites to test how pagespeed varies. We analyse a number of data points and metrics to calculate the score including:
- Page load time
- JavaScript execution time
- Content size
- Caching
- Image scaling
- Google's Core Web Vitals
Excellent (76-100)
There is a strong focus on performance within the organisation, users will benefit from good page load times and SEO will be high.
Fair (50-75)
Evidence of some best practice being applied but still many areas for improvement.
Requires Improvement (0-49)
Some basic performance techniques being missed and a significant impact on user experience.
How we measure pagespeed
We base our pagespeed index on 35 unique data points. These criteria are used to weigh, score and rank website performance across the world.
Factors that affect performance constantly shift. This process is heuristic; changing based on the live data we obtain from companies we’re tracking. As such, we’re committed to updating and iterating our 35 criteria as we progress.
Pagespeed Index Leaderboard
Choose a sector to see the data
View and compare website pagespeed across different sectors and companies.
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How to improve performance
There are some simple steps you can take to improve pagespeed performance and deliver some quick wins.
Read the e-Book
Every second counts
Speed is an increasing unit of strength in eCommerce. A strong focus on website performance within the organisation will result in good page load times, increased customer satisfaction and superior SEO.

Book a consultation
There are some simple steps you can take to improve pagespeed performance and deliver some quick wins.