FormatLab

Free browser-based tools for CSV, JSON, and Excel files

2 followers

Free browser-based tools for CSV, JSON, and Excel files

2 followers

Professional data tools for CSV, JSON, Excel, and YAML files. Format, validate, convert, and transform your data securely in your browser with no server uploads. Free and fast.

Free

Launch tags:Productivity•Developer Tools•Data & Analytics

Launch Team / Built With

Framer — Launch websites with enterprise needs at startup speeds.

Launch websites with enterprise needs at startup speeds.

Promoted

Maker

📌

Hey ProductHunt! I built FormatLab because I was tired of spending way too many hours writing one-off Python scripts or Excel formulas/models for simple tasks. FormatLab runs 100% in your browser, no backend, no uploads, no accounts. Process sensitive data without worrying about privacy. Tools include: CSV viewer/merge/split/diff, JSON formatter/validator/tree-viewer, Excel converter, and more. Tech stack: Next.js 15, TypeScript, client-side file processing with Papa Parse and ExcelJS. Would love feedback on the UX and any tools you'd want to see added!

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1mo ago