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Check 1 / 12 MED impact In the full checklist

Remove unused apps, <2.5s LCP on mobile

What this check is

Every installed app can inject its own script into the storefront, and unused apps keep paying rent in milliseconds. Removing them is usually the largest single speed win available on a Shopify store.

How to implement it

List the installed apps, check the theme for each app’s snippet and script tag, and uninstall the ones not in active use. For the rest, move their scripts to load after interaction where the app allows it, and re-measure after each removal rather than all at once.

How to verify it

Run a mobile Lighthouse or PageSpeed test before and after each removal, watching largest contentful paint and total blocking time, and keep a note of which app cost what.

All 197 checks, one Google Sheet

This page is the summary. The full checklist carries the priority, the impact score and the tool link for every check — all 197 of them, across 14 categories, as a Google Sheet and CSV with lifetime updates.

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All 12 Speed checks · All 14 categories