Free AI CSV analyzer with no file upload. Load massive CSVs in seconds, not hours. Ask questions in plain English, get instant charts. 100% private and data never leaves your browser.
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Maker
📌
Hey Product Hunt! 👋
I'm the maker of CSVLens. Here's the story:
I kept running into the same frustration: I'd get a CSV export from our CRM/database/whatever, and I just wanted to ask "what's our revenue trend?" But my options were:
1. Upload it to some SaaS tool (not happening with customer data)
2. Spend 30 mins in Excel pivot table hell
3. Fire up a Jupyter notebook
None of these felt right for a 2-minute question.
So I built CSVLens. The key insight: **DuckDB can run entirely in your browser via WebAssembly.** That means we can execute real SQL on your data without it ever leaving your computer.
Combine that with Claude AI for natural language → SQL translation, and you get something magical: drop a CSV, ask a question, get a chart. No upload. No infrastructure. No SQL knowledge needed.
**Some things I'm proud of:**
- Privacy isn't a setting—it's the architecture
- Large files load in seconds (try it with a 100MB CSV!)
- The AI picks the right chart type automatically
- You can load multiple CSVs and join them
**What I'd love feedback on:**
- What features would make this indispensable for you?
- Any edge cases where the AI struggles?
Happy to answer any questions. Thanks for checking it out! 🙏