Shopify fix guide
Significant Unused JavaScript on Shopify
A large portion of downloaded JavaScript is never executed during page load. This wastes bandwidth and increases parse/compile time.
Issue ID: CWV-UNUSED-JS-001Severity: moderateEffort: M
Why this matters
A large portion of downloaded JavaScript is never executed during page load. This wastes bandwidth and increases parse/compile time. This affects load speed, Core Web Vitals, and how many visitors stay long enough to convert.
Shopify fix path
How to fix this on Shopify
Use theme settings, page settings, or theme code.
- 1Find the source of the issue in Shopify admin.
- 2Apply the change.
- 3Preview and publish.
After you fix it
- ✓Check Coverage tab in DevTools and confirm unused JS is reduced
Same fix, other platforms
Fix significant unused javascript on a different CMS
Other fixes
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