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Dev tools · December 18, 2023

DuckDB-WASM, execute queries in a browser, and share them as links

DuckDB SQL Shell running entirely in your browser via WebAssembly.

DuckDB-WASM, execute queries in a browser, and share them as links launched on December 18, 2023 with 8 votes, #1,136 of 3,780 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 2 years on.

Visit shell.duckdb.org ↗Alternatives

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  • DU
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    I built Duck-UI, a web-based SQL editor that runs DuckDB entirely in your browser via WebAssembly. No backend required. The Problem: Every time I needed to query csv, parquet, or even to play with SQL, I had to either: (a) spin up a Jupyter notebook (b) use the CLI (c) upload to a hosted service. Friction at every step (TOO MUCH to load a csv or even to test some sql (study)... The Solution: DuckDB's WASM runtime lets us run SQL analysis client-side. Load CSV/JSON/Parquet files from disk or URL, write SQL, get results instantly. Data stays on your machine. What It Does: SQL editor…

  • SQL workbench in the browser2024 · sql-workbench.com · ▲117

    Free browser-based SQL editor powered by DuckDB. Query and visualize CSV, JSON, Parquet and Arrow files locally or from remote URLs. No installation required.

  • SQL Workbench EmbeddedNov 2025 · embedded.sql-workbench.com · ▲11

    A lightweight JavaScript library that transforms static SQL code blocks into interactive, browser-based SQL execution environments using DuckDB WASM. Zero backend required.

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    CSVFiddle – Query CSV files with DuckDB in the browser2022 · csvfiddle.io · ▲64

    Import CSVs, write SQL, and instantly share it with anyone. Runs 100% in-browser, so you're in control of your data.

  • WhatTheDuck – Browser-Based SQL Engine Powered by DuckDb on WASM2023 · whattheduck.incentius.com · ▲11

    WhatTheDuck is a free-to-use tool that allows you to run SQL queries on your CSV files right in your browser. No data is sent anywhere. We've leveraged the power of DuckDB over WASM to make this possible. Do try it out and hit us with any feedback.

  • Private, in-browser, CSV-SQL query runner using SQLite-WASM2024 · csvsqltool.com · ▲41

    Upload CSV, and start querying, all locally without any data leaving your browser. Can handle large CSV's easily. Download query results once done. Uses sqlite-wasm binary.

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