How do I determine whether Looksy affects performance?
Compare the same representative product pages before and after enabling Looksy. Repeat the test and use real-user data when enough traffic is available.Record the test context
- page and product URL;
- theme name and version;
- other enabled apps;
- device, operating system, and browser;
- network condition;
- whether the try-on flow was opened;
- test date and measurement tool.
Check page loading separately from try-on processing
The initial product-page experience and the interactive try-on flow are different performance surfaces. Measure both:- LCP, INP, and CLS;
- transferred data and request count;
- JavaScript long tasks and errors;
- time until the page is usable;
- time and failure rate through the try-on flow;
- layout movement or blocked controls.
How do I isolate the cause?
- Reproduce the issue several times.
- Compare the same page and device with Looksy enabled and disabled in a safe test theme.
- Check the browser console and network panel for failed or slow requests.
- Test another representative product and device.
- Review recent theme, app, image, and analytics changes.
What should I send to support?
Include the recorded context, before-and-after measurements, screenshots or a recording, console errors, and exact reproduction steps. Avoid conclusions based on a single synthetic score.Store Performance FAQ
Understand what a reliable comparison requires.
Theme Integration
Verify the current storefront setup.