LibreDB Studio is an open-source, self-hosted, browser-based SQL editor. It runs as a single server, either via npx, Docker, or a native package, and is reached through the browser rather than installed as a desktop application. LibreDB Studio connects to DuckDB directly through its native Node.js binding, so it queries a DuckDB database file (or an in-memory database) without going through a JDBC or ODBC driver.

Installing LibreDB Studio

1. Start LibreDB Studio with npx, which downloads and runs the latest release:

    npx @libredb/studio
   

   Docker, Homebrew, and other install options are listed in the project's README.

2. Open http://localhost:3000 in a browser. On first run, the admin password is printed to the console.

Connecting to a DuckDB Database

1. Click the + button next to the LibreDB Studio logo in the sidebar to open the New Connection dialog.

   

2. Select DuckDB from the database type grid, and give the connection a name.

   

3. Enter the path to the DuckDB database file in Database File Path. To use an in-memory database, enter :memory:. Since LibreDB Studio runs as a server, the path is resolved on the machine running the server, not on the machine running the browser.

   

4. Click Test Connection to confirm the file can be opened, then click Establish Connection to save it.

   

5. The connection appears in the sidebar. Expand it to browse the tables, views, macros, and sequences in the database.

   

6. Open a query tab, write SQL, and run it with Run or Ctrl+Enter (Cmd+Enter on macOS).

   

Now you are ready to query DuckDB with LibreDB Studio.