“Blend Commerce deliver real value from day one. The practical, actionable information they share in their emails is remarkable.
- Subscription sign-ups increased by 61%.
- Overall store conversion rate improved by 14%.
The most impressive part is that we achieved all of this purely by using the data and tools Blend make freely available.”
I’m not going to regurgitate the old story about Amazon’s “1 second delay costs X” or whatever the fable is…
It’s been remixed so many times that it’s basically eCommerce folklore at this point.
But here’s what I can share…
A case study from Rakuten 24 (a big Japanese eCommerce brand).
They invested in Core Web Vitals improvements and ran an A/B test to measure the impact.
What did they actually improve?
- LCP (Largest Contentful Paint): 2.0s → 0.4s
- CLS (Cumulative Layout Shift): Improved by 92.75%
- FID (First Input Delay), the old version of INP (Interaction to Next Paint): Improved by 7.95%
They split traffic 50/50 for a month between:
A) the optimised version of a high-traffic landing page B) the original page
And these were their results:
- Revenue per visitor up 53.37%
- Conversion rate up 33.13%
- Average order value up 15.20%
- Exit rate down 35.12%
Yes, Rakuten 24 is a big player.
But even if your store gets 10% of that impact, you’re not exactly going to be upset about it, are you?
Chat soon,
Peter
About the author
Peter Gardner Co-Founder and Chief Strategy Officer
Peter Gardner is the Australia-based co-founder and Chief Strategy Officer of Blend Commerce, the specialist Shopify CRO agency named Global CRO Agency of the Year 2026. He helps established Shopify brands improve conversion rate, average order value and repeat purchase by combining quantitative data, qualitative customer insight and structured experimentation.
Peter writes the Shopify CRO Newsletter and is known for the Buy Trifecta®, a framework focused on helping customers Buy Now, Buy More and Buy Again, while using prioritisation models such as PECTI to help brands focus on the highest-impact CRO opportunities.
Peter also co-founded the eCom Collab Club®, a dynamic eCommerce community that connects and empowers eCommerce professionals through events, networking opportunities, and educational resources.
“Blend Commerce deliver real value from day one. The practical, actionable information they share in their emails is remarkable.
- Subscription sign-ups increased by 61%.
- Overall store conversion rate improved by 14%.
The most impressive part is that we achieved all of this purely by using the data and tools Blend make freely available.”
