How to Build an AI Powered Chrome Extension with React & Plasmo (Auto Form Filler)

In this video, I show you how to build a browser extension from scratch using Plasmo, React, and a Python backend powered by FastAPI and PydanticAI.
We’ll walk through the design, architecture, and full implementation of an Auto Form Filler extension.

🎯 What You'll Learn:

How browser extensions work
Plasmo fundamentals (popup, background, content scripts)
React integration inside a Chrome extension
Designing AI-powered agents with PydanticAI
Setting up a FastAPI backend for extensions
High-level architecture & messaging flow

💻 Resources:

GitHub Repository: https://github.com/bjoxiah/auto-form-filler
Plasmo Documentation: https://docs.plasmo.com/

⏱️ Timestamps:

0:00 - Introduction
0:32 - Extension Demo
3:07 - High-Level Architecture
7:46 - Code Overview
17:08 - Chrome Extension Configuration
17:49 - Outro

Perfect for developers building browser extensions, AI tools, and React-powered automations.

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#browserextensions #reactjs #plasmo #fastapi #python #pydanticai #aitools #softwareengineering

Видео How to Build an AI Powered Chrome Extension with React & Plasmo (Auto Form Filler) канала Blessed Josiah