Run SQLite in the Browser with sql.js: A Complete Guide from Install to CRUD

📰 Dev.to · Recca Tsai

Run SQLite in the browser using sql.js and perform CRUD operations, import/export data, and utilize Web Workers for efficient database management

intermediate Published 8 Mar 2026
Action Steps
  1. Install sql.js using npm or yarn by running the command 'npm install sql.js' or 'yarn add sql.js'
  2. Initialize the SQLite database in the browser using the sql.js API by calling the 'SQL.Database()' function
  3. Create a table in the database using the 'EXEC()' function with a SQL query
  4. Perform CRUD (Create, Read, Update, Delete) operations on the database using the 'EXEC()' function with corresponding SQL queries
  5. Use Web Workers to offload database operations and improve application performance by creating a new worker using the 'Worker()' function and passing database operations to it
Who Needs to Know This

Frontend developers and web developers can benefit from using sql.js to create offline-enabled web applications with client-side database capabilities, while backend developers can explore alternative database solutions for web applications

Key Insight

💡 sql.js enables running SQLite databases entirely in the browser, allowing for offline-enabled web applications and efficient client-side data management

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🚀 Run SQLite in the browser with sql.js! 📊 Learn how to install, initialize, and perform CRUD operations with this powerful library 💻

Key Takeaways

Run SQLite in the browser using sql.js and perform CRUD operations, import/export data, and utilize Web Workers for efficient database management

Full Article

Learn how to use sql.js to run SQLite entirely in the browser — from installation and initialization to CRUD operations, import/export, and Web Workers.
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