---
title: "Review Schema Lost in Migration: 57.1% of Sites Drop It - PageSpeed Matters"
url: https://www.pagespeedmatters.com/resources/data-studies/review-schema-lost-in-migration
description: "Of 217 top 1M homepages with AggregateRating markup the month before a platform switch, 57.1% had none the month after."
lang: en
---

Review Schema Lost in Migration: 57.1% of Sites Drop It (https://www.pagespeedmatters.com/resources/data-studies/review-schema-lost-in-migration)

Of 217 top 1M homepages with AggregateRating markup the month before a platform switch, 57.1% had none the month after.

Homepages that lost AggregateRating markup after a switch

Moved to Shopify (60) 68.3%

Left Magento (35) 60%

Left WordPress (45) 57.8%

Moved to Next.js (100) 49%

Source: PageSpeed Matters. HTTP Archive top 1M monthly crawls, Sept 2024 to Sept 2026.

Small groups of 35 to 100 sites each, homepage only.

Source: Review Schema Lost in Migration: 57.1% of Sites Drop It - PageSpeed Matters (https://www.pagespeedmatters.com/resources/data-studies/review-schema-lost-in-migration)