How We Helped Her Fantasy Box Improve Site Speed by 300% and Pass Core Web Vitals
Health & Wellness · < 50 Employees · Shopify Plus
300%
Overall Speed Improvement
31%
LCP Improvement
34%
INP Improvement
Project Overview
The PageSpeed Matters team was brought on as Shopify performance consultants to resolve website speed issues on the Her Fantasy Box site. This involved collaborating with their internal team, delivering dozens of performance recommendations, coordinating with external app providers to ensure a seamless optimization process, and implementing and validating changes with minimal risk to ongoing sales. Because Her Fantasy Box had already processed over 1 million orders and attracted millions of pageviews, any performance work had to be executed carefully to avoid interrupting revenue or breaking key customer flows.
When the Her Fantasy Box team engaged PageSpeed Matters, the primary challenge was balancing aggressive performance gains with zero disruption to a high-volume eCommerce operation.
Goals & Objectives
The primary goal of this project was to improve Google's Core Web Vitals, site speed, and overall user experience and usability.
Our primary goals were to:
- Pass Google's Core Web Vitals to help with rankings
- Improve speed to reduce bounce rate and increase conversion rates for advertising campaigns
- Company Name
- Her Fantasy Box
- Company Size
- < 50 Employees
- Industry
- Health & Wellness
- Platform
- Shopify Plus
Outcomes:
Core metrics that improved over the duration of the project.
300%
Overall Speed Improvement
Overall page load and interaction performance improved by 300%, resulting in faster perceived load times and smoother browsing across devices.
31%
LCP Improvement
We reduced the time it takes for the main content to visibly load, improving first impressions and helping visitors stay engaged instead of bouncing.
34%
INP Improvement
Interactive elements—such as navigation, product selections, and cart actions—respond noticeably faster, creating a smoother and more trustworthy shopping experience.
Before vs After
Before
| Metric | Score |
|---|---|
| Overall Speed | 1x |
| LCP | 3.8s |
| INP | 320ms |
After
| Metric | Score |
|---|---|
| Overall Speed | 4x faster |
| LCP | 2.6s |
| INP | 210ms |
Our Approach
A systematic, step-by-step process tailored to Her Fantasy Box's needs.
Consulting Audit
Delivered a comprehensive performance audit with dozens of actionable recommendations.
Team Coordination
Worked directly with their internal dev team and external app providers.
Staged Implementation
Tested changes in batches to reduce risk and make debugging easier.
Seamless Deployment
Coordinated a seamless deployment window with their internal team.
Monitoring & Support
Provided consistent monitoring & debugging during and after launch with post-launch support.
Key Takeaways
High-traffic Shopify Plus stores need a consulting-first approach before touching code.
Coordinating with app providers is critical — many performance issues originate in third-party scripts.
Staged deployments protect revenue during optimization windows.
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