Excel crashes? Uploading PII to cloud SaaS? Stop. Dataprep is a suite of 20+ browser-based data tools. Flatten Shopify orders, anonymize GDPR data, and run SQL on million-row CSVs. Zero server uploads. Instantly fast.
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Maker
📌
Hi Product Hunt! 👋 I'm Hank.
If you’ve ever tried to open a 1GB CSV and watched Excel crash, or hesitated to upload sensitive customer data to a random online format converter, I built this for you.
Dataprep.dev is a pure-browser data toolkit. By leveraging DuckDB-Wasm, it brings database-level processing speed directly into your browser tab.
🔒 Zero Uploads: Your data never touches a server. It is processed entirely locally on your device.
⚡ Blazing Fast: Handle million-row datasets in seconds without freezing your computer.
🛠️ 20+ Niche Tools: Instantly merge 50 CSVs, anonymize GDPR data, flatten messy Shopify/Amazon exports, or run native SQL queries directly on your files.
It's 100% free, with no signup walls and no BS. I built this to solve my own data workflow nightmares, and I hope it saves you hours of frustration too.
I'll be hanging out here all day! Test it with your messiest datasets, let me know your feedback, or ask me anything about the Wasm architecture. Cheers! 🚀