I am looking to make a website builder web app, where users can publish built websites with a custom or subdomain (much like Wix, Weebly, Squarespace, etc.), and I was wondering about any advice on which web framework to build it on? I currently know Node.js, but I would be excited to learn Laravel or Django if those would be better options. Any advice would be much appreciated!
The tools you mentioned are all backend focused frameworks. I will say, you can choose one of them as you may prefer (maybe Laravel and Django will be better since it's more organized than Node.js). But no matter what, if you will create a website builder application, today you'll need a frontend framework like Vue.js, React or Angular - or maybe Ember.js, Svelte and Meteor.