Uninstalled apps leaving active code

What it means

Leftover app JavaScript still runs after uninstall, slowing every page.

Why it happens on Shopify

Legacy Liquid injections persist; Shopify does not auto-clean.

How to check if you have this issue

Match theme scripts to installed apps and expected features. Identify ownership before removal; an unfamiliar name does not mean the resource is unused.

How to fix it: precise steps

Back up the theme and remove only confirmed unused injections on a working copy. Test affected journeys before release and check for residual requests afterwards.

How to confirm it is fixed

Repeat the same checks as in the verification step after deploy. SEO effects can take days to weeks depending on crawl budget.

Impact on SEO and conversion

High-impact issues often hurt perceived performance or SEO consistency; fixes gradually improve rankings and conversion.

Related issues

• App scripts blocking render
• SEO app conflicting with theme