SwiftStore scans your Shopify theme and identifies every factor slowing down your store. It detects render-blocking scripts, oversized images, unused CSS, and slow third-party app scripts. Once issues are found, you can preview fixes in a safe sandbox before applying them to your live store. The app runs image compression, script deferral, font preloading, and critical CSS extraction automatically. A Core Web Vitals monitor tracks your LCP, CLS, and INP scores over time. Works on all Online Stor

• AI theme scanner finds render-blocking scripts, unused CSS, and oversized images
• Sandbox preview shows before-and-after scores before any change goes live
• One-click fixes for image lazy loading, JS deferral, font preloading, and more
• Core Web Vitals monitor tracks LCP, CLS, and INP with 30-day history
• App performance audit shows which installed apps are slowing your store down