Writing
Practical notes on Shopify fitment, custom software, and what we've shipped.
If your YMM (Year/Make/Model) dropdown feels sluggish on a Shopify storefront, the cause is almost always one of four things. Here's how to diagnose and fix each one — with the trade-offs that actually matter.
Read →A Shopify theme app extension returned HTTP 500 on every storefront page for three days. The root cause — `shop.metafields.*` reads inside a `target: body` block — blew past an undocumented Liquid complexity ceiling. Measurements, repro script, and what Shopify's docs don't say.
Read →A practical guide to adding Year / Make / Model (YMM) fitment search to Shopify — what it is, why it matters, the options, and how to set it up without paying for a data silo.
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