Hello.
I am using theme Focal.
Please tell me how to insert a product filter on the main product page (collection/all)?
Thanks!
Welcome to the Community.
You can try the many apps for product filter but apps can have a significant performance impact on the stores they are installed on. I will suggest that you shouldn’t install apps on your store. If you are having coding knowledge then I can be implemented by liquid code, else we will surely help you to achieve this task effectively.
you can check our store.
https://www.oscprofessionals.com/shopify-performance-optimization/
You can directly get connected with me via email or Skype.