I've built a fully functioning Flask app deployed to Heroku. What to do for front-end?

Flask does provide you with multiple endpoints, which you call via an HTTP request. This is basically your setup for a microservice architecture, as, depending on the granularity of your endpoint functions, you can call them from multiple places and re-use the backends capability.

Getting to your question if any of the frameworks is better for working with Flask: Because pretty much every front-end language has the capability to run HTTP requests, you are not limited at all and I don't think there are better or worse.

But as @horizontech said you're probably off to a good start with HTML, CSS, and JS. Then a framework such as React, Vue, Svelte. A framework for Python-based web applications is django, if you're more into that.

Looks like HTML + CSS & Bootstrap + JS is all you need for your front end design if you are using Flask and Heroku. I'm happy with the workflow and I think the result works pretty well. This is my first personal project and I am using all of this features you are talking about in a really simple App for bulk image resize -> freeimageresizer.com

Hey Samuel,

I assume you are still working on the web app you referenced in your previous post. I don't see any reason you would have to dive into react to do this. Flask works pretty well with the Jinja templating engine. You could use this to render webpages(html/css). Bootstrap is definitely still a functional alternative. I wouldn't worry too much about what technology you are using as long as it works for you. Your users won't be bothered either.

if bootstrap gets the job done for you then use it. I've used it across several projects :)
for openstartuplist.com I use tailwind css

start with simple HTML, CSS. Then JS.

Won't suggest directly jumping into React.