Blog categoryE-commerce

Articles and guides about e-commerce from App369's engineering team

2 articles

October 21, 2026

How to Remove Leftover App Code From a Shopify Theme (2026)

Uninstalled a Shopify app but scripts still load? How to find leftover app code in your theme, remove it safely on a duplicate theme, and measure the result.

7 min· Miami, FL

October 21, 2026

Shopify Speed Checklist: Faster Mobile Pages and Checkout (2026)

Shopify speed checklist for mobile: measure Core Web Vitals, fix images, leftover app code, fonts and Liquid, and remove friction between cart and checkout.

9 min· Miami, FL

Simon Dziak
Founder and head developer

Get a personalized assessment by email

Submit your project details and we’ll reply by email with a personalized assessment, usually within one business day.

Get in touch Instant quote

Prefer a call? Consultations are $100 per 15 minutes, paid upfront.