When you need CSV → JSON
Every database migration, API integration, or frontend data mock starts with someone copy-pasting a spreadsheet and manually wrapping it in brackets. This tool kills that workflow.
Type Inference
Numbers stay 42, not "42". true/false become booleans. Empty cells become null. Your JSON is database-ready without manual cleanup.
Auto Delimiter Detection
European exports use semicolons. Postgres dumps use tabs. We detect comma, semicolon, tab, and pipe automatically — no config needed.
Keyed Object Output
Choose "Keyed Object" to get {"Alice": {...}} — perfect when you need fast lookups by ID or name without looping an array.
No Upload, No Server
Everything runs in your browser. Your spreadsheet data never leaves your machine. Safe for internal CSVs, customer data, and confidential exports.