Review Schema Lost in Migration: 57.1% of Sites Drop It

    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