Replacement.ai

Root System Drawings

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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&#x27;s WASM runtime lets us run SQL analysis client-side. Load CSV&#x2F;JSON&#x2F;Parquet files from disk or URL, write SQL, get results instantly. Data stays on your machine.
What It Does:SQL editor with autocomplete &amp; syntax highlighting
Import CSV, JSON, Parquet, Arrow (local or remote URLs)
Query history, keyboard shortcuts, theme toggle
Persistent storage via OPFS (data survives browser refresh)
Optional: Connect to external DuckDB servers
One-liner Docker deployment or Node 20+ dev serverTechnical Details:DuckDB compiled to WASM; query execution in-browser
OPFS-backed persistence
Apache 2.0 licensed
Runs on Chrome 88+, Firefox 79+, Safari 14+Use Cases:Learning SQL without setting up databases
Ad-hoc data exploration (CSV → SQL in seconds)
Quick prototyping before shipping to production
Privacy-conscious workflows (no data leaves your browser)GitHub: <a href="https:&#x2F;&#x2F;github.com&#x2F;ibero-data&#x2F;duck-ui" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ibero-data&#x2F;duck-ui</a>
Live Demo: <a href="https:&#x2F;&#x2F;demo.duckui.com" rel="nofollow">https:&#x2F;&#x2F;demo.duckui.com</a>
Quick Start: docker run -p 5522:5522 ghcr.io&#x2F;ibero-data&#x2F;duck-ui:latestWould love feedback on: 
(1) Use cases I&#x27;m missing
(2) Performance bottlenecks you hit
(3) Features that would make this your default SQL scratchpad.

Show HN: Duck-UI – Browser-Based SQL IDE for DuckDB

The Accountability Problem

The case for the return of fine-tuning

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Lost Jack Kerouac story found among assassinated mafia boss' belongings

Improving PixelMelt's Kindle Web Deobfuscator

Why an abundance of choice is not the same as freedom

Websites Are for Humans

How one of the longest dinosaur trackways in the world was uncovered in the UK

How to Assemble an Electric Heating Element from Scratch

Comparing the power consumption of a 30 year old refrigerator to a brand new one