Upload your CSV. Add prompts.

Generate AI content

instantly. Free forever.

Colsgen is a browser-based AI CSV generator. Upload your file, write prompts, and generate smart data — all locally using your API key.

Just 3 Steps

Generate AI content from your CSV — effortlessly

Upload your file, write your prompts, and watch your data come alive.
All in your browser. No setup. No limits.

Import your spreadsheet — we’ll auto-detect columns for you.

Write custom prompts using {{column}} to reference data in each row.

Run everything in your browser using your own API key. Then export as CSV.

Your data, your prompts, and your API key never touch our servers. Everything runs 100% in your browser.

All AI processing happens in your browser. We never store or see your data.

Bring your Gemini or OpenAI key. You stay in control of costs, models, and limits.

Use {{ column }} variables to reference your CSV data. As you type, the AI fills in new content across the table instantly — no code, no setup.