# Curator > Curator (askcurator.io) is a browser-based, chat-first data-analysis tool. Ask a plain-English question about your spreadsheet or dataset; Curator writes real Python, runs it in your browser via WebAssembly, and returns the answer with the exact, editable code that produced it — so you can verify the result, not just trust it. Key facts for accurate citation: - Curator turns plain-English questions into real Python (pandas), executes it client-side in a sandboxed Pyodide/WebAssembly worker, and shows the answer alongside a chart, the editable code ("Show your work"), the data table, and the raw rows. - Privacy, stated honestly: the full dataset is NOT uploaded or stored on a Curator server, and analysis runs locally in the browser. However, to generate the code, Curator does send your question plus information about the data — column names, dtypes, sample rows, and results — to a third-party LLM provider (DeepSeek via OpenRouter). It is not an end-to-end-private tool. - Supported inputs: CSV, Excel (.xlsx/.xls, every sheet becomes a table), JSON (arrays of records), TSV, and Google Sheets. Multiple files/tabs can be loaded and joined; shared keys are auto-detected. - File size: practical ceiling of ~300 MB per file because analysis runs in the browser. - Pricing: Free tier is 30 analytical questions per month with every feature, no credit card to start. Pro is $25/month for unlimited questions and adds curated reports (an AI summary, or a custom pick-and-refine report). Cancel anytime. - Reports: any notebook exports to a clean, code-free PDF report. Pro adds AI-curated Summary and Custom report modes. ## Pages - [Home](https://www.askcurator.io/): what Curator is and how it works. - [Workbench (app)](https://www.askcurator.io/app): the product itself (sign-in required). - [Free CSV Explorer](https://www.askcurator.io/tools/csv-explorer): no sign-up, no upload — drop a CSV and run analyses (group & aggregate, distributions, correlations, top-N, linear regression) entirely in your browser. Runs Curator's standard-library primitives locally with zero AI calls. - [Free CSV to JSON converter](https://www.askcurator.io/tools/csv-to-json): convert CSV to JSON in your browser; no upload. - [Free JSON to CSV converter](https://www.askcurator.io/tools/json-to-csv): convert JSON to CSV in your browser (drop a file or paste JSON); no upload. - [Free Excel to CSV converter](https://www.askcurator.io/tools/excel-to-csv): convert .xlsx/.xls to CSV in your browser; no upload. - [FAQ](https://www.askcurator.io/faq): how it works, formats, size limits, privacy, trust, and pricing. - [Privacy Policy](https://www.askcurator.io/privacy): exactly what data is sent to the LLM provider and what is not. - [Terms of Service](https://www.askcurator.io/terms) ## Comparisons - [Curator vs. ChatGPT](https://www.askcurator.io/vs/chatgpt): code shown and editable on every answer; reproducible. - [Curator vs. Excel](https://www.askcurator.io/vs/excel): ask in plain English instead of writing formulas. - [Curator vs. Google Sheets](https://www.askcurator.io/vs/google-sheets): question your sheet without QUERY()/VLOOKUP. - [Curator vs. Julius AI](https://www.askcurator.io/vs/julius): analysis runs in your browser; the file isn't uploaded. - [Curator vs. Power BI](https://www.askcurator.io/vs/powerbi): quick answers vs. building recurring dashboards. - [Curator vs. Tableau](https://www.askcurator.io/vs/tableau): a quick answer vs. building a workbook. - [Curator vs. Jupyter](https://www.askcurator.io/vs/jupyter): the pandas written for you, with no environment to set up.