Success Story: PageSpeed Insights - GO Sport increases its score by 15 points
GO Sport wanted to bridge the conversion gap between mobile and desktop.
To achieve this goal, the e-commerce site optimized its loading speed, a key lever for customer satisfaction and conversions.
These actions resulted in an increase in the Google PageSpeed Insights score.
Market
Loisir – Sport
Speed
x2
PageSpeed
+15 points
Bounce rate
-10 points
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CONTEXT
-
Context
GO Sport is a sports goods retailer owned by the Casino Group, founded in 1970. It operates 125 stores and an e-commerce site featuring a marketplace with over 1 million products, offering omnichannel services and e-reservations. The company generates an annual revenue of €500 million.
In just three years, the website—built on Magento and planning a migration to Salesforce Commerce Cloud—has increased its business volume fivefold and tripled its monthly unique visitors, reaching 5 million.
To support this rapid growth, the technical teams focused on improving loading speed. They aimed to maximize the impact of performance optimizations while reducing both workload and budget constraints.
-
GOALS
-
Goals
A preliminary audit conducted by Fasterize highlighted key areas for improvement, confirming the technical teams’ initial findings.
The priority was to optimize JavaScript management and implement image lazy loading—web performance techniques that the technical team struggled to maintain across the entire site due to its complexity.
Before deployment, the GO Sport e-commerce team validated the solution’s ROI through an A/B test.
Their goals were:
A 0.2 to 0.4 point increase in mobile conversion rates
A notable improvement in the PageSpeed Insights score
-
DEPLOYMENT
-
Deployment
Fasterize’s SaaS solution was deployed in under 2 months. The platform configuration, handled by a dedicated Customer Success Engineer, was closely monitored by GO Sport’s integrator and technical teams.
No changes to the website’s code were required, aside from implementing a simple tag to redirect traffic.
Adopting this solution also provided an opportunity for the technical team to enhance their web performance skills, from monitoring to cache management.
-
SUPPORT
-
Support
GO Sport’s technical team now uses the Fasterize platform independently on a daily basis.
They regularly consult with their Customer Success Engineer, appreciating the responsiveness and quality of support. This collaboration ensures optimal use of the solution, particularly when verifying settings before each production release.
Moreover, validating configurations before each update has instilled a web performance mindset from the early stages of developing new features or products.
Context
GO Sport is a sports goods retailer owned by the Casino Group, founded in 1970. It operates 125 stores and an e-commerce site featuring a marketplace with over 1 million products, offering omnichannel services and e-reservations. The company generates an annual revenue of €500 million.
In just three years, the website—built on Magento and planning a migration to Salesforce Commerce Cloud—has increased its business volume fivefold and tripled its monthly unique visitors, reaching 5 million.
To support this rapid growth, the technical teams focused on improving loading speed. They aimed to maximize the impact of performance optimizations while reducing both workload and budget constraints.
Goals
A preliminary audit conducted by Fasterize highlighted key areas for improvement, confirming the technical teams’ initial findings.
The priority was to optimize JavaScript management and implement image lazy loading—web performance techniques that the technical team struggled to maintain across the entire site due to its complexity.
Before deployment, the GO Sport e-commerce team validated the solution’s ROI through an A/B test.
Their goals were:
A 0.2 to 0.4 point increase in mobile conversion rates
A notable improvement in the PageSpeed Insights score
Deployment
Fasterize’s SaaS solution was deployed in under 2 months. The platform configuration, handled by a dedicated Customer Success Engineer, was closely monitored by GO Sport’s integrator and technical teams.
No changes to the website’s code were required, aside from implementing a simple tag to redirect traffic.
Adopting this solution also provided an opportunity for the technical team to enhance their web performance skills, from monitoring to cache management.
Support
GO Sport’s technical team now uses the Fasterize platform independently on a daily basis.
They regularly consult with their Customer Success Engineer, appreciating the responsiveness and quality of support. This collaboration ensures optimal use of the solution, particularly when verifying settings before each production release.
Moreover, validating configurations before each update has instilled a web performance mindset from the early stages of developing new features or products.
Results
Mobile
Speed Index
Start Render
Time To First Byte
Desktop
Speed Index
Start Render
Time To First Byte
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