← Back to DuckDB Browser FAQs

What Is DuckDB Browser?

DuckDB Browser is a free, web-based SQL editor powered by DuckDB running entirely in your browser via WebAssembly. It lets you load data files, write SQL queries, and explore results — all without any server, installation, or account.

DuckDB is an analytical database engine optimized for OLAP workloads. It's particularly fast at scanning and aggregating columnar data like Parquet files, making it ideal for data exploration and quick analytics.

Key Features

  • Runs 100% in your browser — no server connection needed
  • Load Parquet, CSV, JSON, and NDJSON files via drag-and-drop
  • Auto-detects schemas, column types, and delimiters
  • Full SQL support including window functions, CTEs, and joins
  • Browse tables and view column schemas
  • Export tables as CSV files
  • Query history stored locally for quick re-runs
  • Resizable split-pane layout
  • Start with an empty in-memory database or load a file