PyScript lets you run Python scripts right in the browser, side by side with JavaScript, with two-way interaction between your code and the web page.

Reflex has built an open source framework to make it easy to turn Python code into a we app. Today it announced a $5M seed investment.

It's possible to take a step further with a browser extension, but this is a basic Python project that hosts a web page that you can drag and drop a file on for a visualizer.

Python Installation: Python is a popular and beginner-friendly programming language that is widely used in web development.