Plasmo is a browser extension framework and build tool designed for developing cross-browser extensions from a single codebase. It functions as a development environment that automates manifest generation and bundles source code into compatible packages for multiple web browser engines.
The project includes a developer toolset featuring hot module replacement for real-time code updates and an automated publisher to deliver completed builds to various browser web stores.
Its capability surface covers extension UI development through the injection of components into web pages and a communication layer for exchanging data between background workers, popups, and content scripts. It also provides utilities for managing extension state and integrating remote code into the final bundle.
