Common symptoms
- Shopify mobile PageSpeed reports slow LCP
- Buttons, filters, or menus respond slowly
- Large hero image appears late
- App embeds run on every storefront page
- Performance worsened after theme or app changes
Fix Shopify INP + LCP Problems Without Guessing
Shopify INP and LCP problems often come from different parts of the storefront. LCP is commonly affected by hero-media discovery, image sizing, fonts, render-blocking resources, and server delivery, while INP is more often tied to long JavaScript tasks, theme interactions, app embeds, filters, menus, and third-party scripts. Genesis separates the two metrics before recommending a change.
Possible causes
- Oversized or late-discovered hero media
- Theme JavaScript long tasks
- Third-party app scripts
- Render-blocking CSS or fonts
- Heavy collection and filter interactions
Diagnose the exact failure before choosing a repair.
Genesis separates the visible symptom from the underlying technical cause. Run the supported diagnostic first, review the evidence, and then use a matching repair only when the failure is actually verified.
- Platform scope
- Shopify storefronts and Online Store 2.0 themes
- Category
- Shopify performance
- Last updated
- 2026-09-15
Next step
Start with a free diagnostic. If Genesis verifies a problem and a compatible treatment exists, it will route you to the relevant Code Store product or repair path.
Run a Website Diagnostic