Developer Tool
CSV to JSON Converter
Parse CSV data into structured JSON with support for multiple delimiters, type inference, nested keys via dot notation, and prototype pollution protection.
Your data is processed locally in your browser and is never uploaded.
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FAQ
- What delimiters are supported?
- Comma, semicolon, tab, and pipe delimiters are supported. Auto-detect analyzes the first line to pick the most likely delimiter.
- How do nested keys work?
- When enabled, column headers with dots (e.g., address.city) create nested JSON objects. The key 'address.city' becomes { address: { city: value } }.
- Is there prototype pollution protection?
- Yes. Keys like __proto__, prototype, and constructor are rejected during nested key expansion to prevent prototype pollution attacks.
- Is my data sent to a server?
- No. All CSV parsing happens locally in your browser. No data leaves your device.