SchemaFast

SchemaFast is a zero-setup utility designed to do the boring work for you by converting Excel and CSV files into SQL, JSON, and TypeScript representations directly in your browser. This launch marks the initial stage of SchemaFast and is focused on collecting real-world user feedback. The long-term vision is to evolve it from a simple file conversion tool into a complete in-browser database playground where developers and students can model, test, and refine data architectures without relying on external tools or setup. Early feedback will directly guide which features are built next. SchemaFast automatically infers data types from your data and generates a complete SQL schema along with INSERT statements, all with a live, real-time preview. It also includes an interactive data cleaning interface that allows you to rename headers, remove messy rows or columns, and adjust inferred data types while watching the generated output update instantly. To encourage experimentation, SchemaFast provides an undo option for deletions so you never lose progress while cleaning or restructuring data. All data processing happens entirely on the client side. Nothing is uploaded to a server, ensuring complete privacy and security for your files. SchemaFast is completely free to use, with no accounts, no signups, no ads, and no paywalls - just a fast, practical utility built for developers and students. Feedback on the current experience and ideas for the upcoming database playground phase are highly welcome. The goal is to build a tool that genuinely fits into real-world workflows, and user input will play a key role in shaping its future.