SQL Playground & Dev Sandbox

Test and benchmark SQLite queries inside your web browser. 100% offline, private, and fast.

What is the SQL Sandbox & Dev Playground?

The SQL Sandbox is a 100% secure, browser-based SQLite terminal designed for web developers, backend engineers, and database learners. You can write, execute, and inspect SQL queries locally without configuring databases or installing local servers. It supports importing SQLite database files and loading custom mock schemas.

Key Features

  • ✓In-browser SQLite: Real-time query execution via sql.js WebAssembly.
  • ✓Sample Relational DB: Load category-product-order relational schemas with a single click.
  • ✓Schema Inspector: Browse tables, column datatypes, key constraints, and row counts dynamically.
  • ✓Query History & Presets: Save recent query terminals and select standard SQL templates.
  • ✓CSV & JSON Exporter: Download query tabular output records instantly.
  • ✓Privacy First: All database operations happen entirely in your local browser sandbox.

How to use

  1. Click 'Load DB Sample' to instantly pre-populate tables (categories, products, orders) with sample data.
  2. Write your SQL statements in the Query Terminal, or select from the 'Sample Queries' dropdown list.
  3. Execute query by pressing 'Run Query' or using 'Ctrl + Enter' shortcut.
  4. Inspect tables and column properties inside the Schema Explorer side-panel.
  5. Export query output grids to CSV or JSON, or download the entire database state by clicking 'Export File'.

Develop and test your database queries efficiently with our online secure SQL Playground.