How can I remove unused code after uninstalling apps?

Shopify Discussion

Topic summary

Core Issue:
Shopify store owners struggle with leftover code from uninstalled apps that slows page speed. No automated app exists to clean this code.

Key Findings & Solutions:

  • Shopify’s New Requirements: As of ~2 months ago, Shopify requires apps to provide automatic code removal upon uninstallation. Users should reinstall apps briefly to check for cleanup buttons.

  • Diagnostic Approach: Use Chrome DevTools (right-click → Inspect → Network tab) to identify slow-loading resources and trace them to specific apps or theme files.

  • Common Culprits:

    • Facebook Pixel requests (often duplicated, sometimes 3+ instances)
    • Review apps (Ali Reviews, Judge.me, Yotpo, Opinew)
    • Loyalty/rewards programs
    • Chat widgets and email marketing tools
    • Unused CSS/JavaScript from themes

  • Recommended Actions:

    1. Contact app developers for optimization help
    2. Add loading="lazy" to image tags for lazy loading
    3. Search theme files for app references using text editors
    4. Consolidate duplicate pixels/tracking codes
    5. Remove unused apps completely following developer uninstall guides

Important Caveats:

  • Some JavaScript loads after main page (via Shopify script tags), so doesn’t actually slow initial load despite Google reports
  • Theme core files shouldn’t be modified without expertise
  • Google Lighthouse scores simulate slow connections and may not reflect real user experience
  • Professional developer help recommended for complex code removal
Summarized with AI on October 31. AI used: claude-sonnet-4-5-20250929.
170

Hi there

sorry I’m a bit late to the party on this but my store speed is just 21

my web address is www.copescoins.com and wondered if you could provide any in site in what is slowing it down so much

I have optimised my images etc but think it may be as a result of installing then uninstalling so many apps

best wishes

David