CSV to JSON Studio

Transform spreadsheets into clean JSON with flexible parsing controls and instant previews.

Everything runs locally in your browser — nothing is uploaded.

Source CSV

Paste raw comma-separated values or upload a file to start converting.

CSV data

Upload CSV file

Large files may take a moment to process, especially when auto-detecting data types.

Parser settings

Fine-tune how PapaParse interprets your CSV before generating JSON.

First row contains headersSkip empty linesDetect numbers, booleans, and dates automaticallyTrim surrounding whitespace

Delimiter

JSON indentation

JSON preview

Copy or download the converted payload alongside a live data snapshot.

Formatted JSON

Converted JSON will appear here after you process a CSV file.

Add your CSV to generate a preview table.