Upload CSV, TSV, or JSON files and query them with SQL directly in your browser. Auto-detects schema, generates example queries, and exports results as CSV. Powered by SQLite via WebAssembly.
Last updated: February 23, 2026
Upload CSV, TSV, or JSON files and query them with SQL directly in your browser. Auto-detects schema, generates example queries, and exports results as CSV. Powered by SQLite via WebAssembly. This tool runs in-browser f…
This tool uses sql.js, which is SQLite compiled to WebAssembly. The entire database runs in your browser — no data is uploaded anywhere.
You can upload CSV, TSV, and JSON files. Each file becomes a table you can query with standard SQL.
Since everything runs in your browser, performance depends on your device. Files up to ~50MB work well on most modern devices.
Yes! Upload multiple files and they each become separate tables. You can use SQL JOIN statements to combine them.
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