This site is home to the documentation for the SQLite project's WebAssembly- and JavaScript-related APIs, which enable the use of sqlite3 in modern WASM-capable browsers.
Cookie/storage disclaimer: this site requires a modern, JavaScript-capable browser for full functionality. This site uses client-side storage for persisting certain browsing preferences (like the bright/dark mode toggle) but its server does not process, nor transfer to any other entity, any user-level information beyond certain SCM-side display-related preferences and the credentials of logged-in developers.
Site Overview
About the sqlite3 WASM subproject:
- 📰 Project news
- 💬 Frequently Asked Questions
- 🚧 TODOs and (un)planned features
- ☎ Technical support is provided, and feedback gladly accepted, via the sqlite forum. Those with commercial SQLite support contracts may use their usual support channels.
Making use of this project:
👣 The three-step HOWTO demonstrates how to include and run the sqlite3 WASM module and its associated JavaScript APIs.
💾 Downloads are available via the main project downloads page.
- 📸 Prerelease snapshots are updated from time to time
- 📦 npm module
🛠 Building sqlite3 WASM and its associated JS code.
- Emscripten build specifics
📇 The API index describes the various API variants and how to load and access them.
- 🧑🍳 Cookbook of recipes for client-level code
- 💾 Persistent storage options
- 🤓 Using C-structs in the JS API
- 🧱 Creating virtual tables and table-valued functions in JS
- 💣 API changes which might affect clients
- 🔭 The module symbols app generates lists of sqlite3 API symbols from the JavaScript/WASM module.
About this documentation:
In the Wild
Third-party projects known to be using this project include (in order of their addition to this list)...
- SQLime provides a database browser interface.
- Evolu Evolu is a local-first platform designed for privacy, ease of use, and no vendor lock-in.
- SQLiteNext provides a demo of integrating this project with next.js.
- sqlite-wasm-esm demonstrates how to use this project with the Vite toolchain.
- sqlite-wasm-http provides an SQLite VFS with read-only access to databases which are served directly over HTTP.
Related Works
(In the order in which we became aware of them...)
- Alon Zakai's sql.js is the first known direct usage of sqlite3 in a web browser, dating back to 2012, not counting WebSQL (which was a native-level feature and has long since been removed from most browsers).
- Roy Hashimoto's wa-sqlite is home to the first known implementation of OPFS storage of sqlite3 databases.
- James Long's absurd-js demonstrates storing sqlite3 databases inside IndexedDB databases.
- postgres-wasm runs a Postgres database server in a browser.
- Jaccwabyt is a small JS library for manipulating WASM-hosted C structs via JS code, created specifically to support the OPFS sqlite3_vfs implementation in this project. This project embeds a copy but does not expose it to client applications.
- CoWasm is "Collaborative WebAssembly for Servers and Browsers". Their demo app includes a WASM build of the sqlite3 shell application.
- Evan Brass's build uses a WASI SDK build, instead of Emscripten, and demonstrates some novel features which this project's WASM build does not.
Third-party Documentation and Articles
The following links reference articles and documentation published about SQLite WASM by third parties:
- Porting WebSQL to OPFS, by the Google Chrome dev team
- The VMWare OCTO team writes about building SQLite3 for WASI