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Shopify CRO Tips & Test Ideas | May 2026

Here are some of our top May testing ideas and tips to help you drive growth and scale revenue.

1. PLP: product reviews → +7.1% add-to-cart

WHY IT WORKED:

When shoppers see others loving your products, it builds trust and reduces hesitation. More trust = more add-to-carts.

NOTE: Set a minimum review threshold to avoid a negative impact.

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2. Bigger cart icon & pulse → +13.4% revenue

WHY IT WORKED:

Making the cart more visible helps shoppers pick up where they left off and keep moving forward. 

Especially for high consideration purchases, shoppers rarely buy in one straight line.

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3. PLP: front / back toggle → +7.8% CR

WHY IT WORKED:

Being able to quickly scan and compare products from the back on the collection page helps shoppers find what they want faster.

Faster decisions → more sales

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4. PDP: "runs small / large" → 23.5% fewer returns

WHY IT WORKED:

The “runs small / runs large” guidance was taken out of the reviews section, and placed right next to the size selector.

The guidance already existed, but shoppers didn’t see it when it mattered, leading to wrong-size orders and returns.

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