Her Fantasy Box
How We Helped Her Fantasy Box Improve Site Speed by 300% and Pass Core Web Vitals
+300% Overall Speed
High-volume Shopify Plus store with 1M+ orders. Consulting-first engagement coordinated dozens of perf recommendations with internal devs and app vendors — 300% overall speed lift with zero revenue disruption.
Outcomes
300%
Overall Speed Improvement
Overall page load and interaction performance improved by 300%.
31%
LCP Improvement
Reduced the time it takes for main content to visibly load.
34%
INP Improvement
Interactive elements respond noticeably faster.
Before vs After
| Metric | Before | After |
|---|---|---|
| Overall Speed | 1x | 4x faster |
| LCP | 3.8s | 2.6s |
| INP | 320ms | 210ms |
Project Overview
We were 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.
Our Approach
Consulting Audit — comprehensive performance audit with dozens of actionable recommendations.
Team Coordination — worked directly with internal dev team and external app providers.
Staged Implementation — tested changes in batches to reduce risk.
Seamless Deployment — coordinated a deployment window with the internal team.
Monitoring & Support — consistent monitoring and debugging during and after launch.
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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