Pglite is a client-side relational database engine that runs a full-featured PostgreSQL instance directly within browser and Node.js environments. By leveraging WebAssembly, it provides a persistent SQL storage solution that enables complex data management and querying without requiring an external database server.
The project distinguishes itself through a reactive SQL data layer that automatically synchronizes user interface components with live query results. It manages database operations using worker threads to prevent main-thread blocking and coordinates access across multiple browser tabs to ensure consistent data views. For performance, it supports binary-snapshot-based initialization, allowing applications to load pre-built database states instantly.
The platform includes a comprehensive suite of tools for local-first development, such as virtual file system persistence, transaction management, and support for custom engine extensions. It also provides developer-focused utilities including an interactive SQL terminal, schema inspection, and automated database lifecycle management for testing and development workflows.
The project integrates with modern build tools to resolve binary dependencies and provides type-safe query builders and ORM support to bridge application logic with the database.
