Can I use tab-separated files?

Yes, choose Tab as the delimiter to parse TSV content.

Are numbers converted automatically?

No. Every value stays a string so identifiers with leading zeros and long numeric IDs are preserved exactly.

What happens without a header row?

Each row becomes an object with keys field_1, field_2 and so on, in column order.

CSV to JSON

Convert CSV or delimited text into a JSON array.

Has header row

Delimiter

CSV input

name,age
John,25
Jane,30

JSON output

[
  {
    "name": "John",
    "age": "25"
  },
  {
    "name": "Jane",
    "age": "30"
  }
]

About the CSV to JSON

Exports from spreadsheets, databases and analytics dashboards usually arrive as CSV. Converting to JSON makes the data usable in scripts, fixtures and API payloads.

The parser understands quoted fields, escaped double quotes and newlines inside quotes. You can pick the delimiter and choose whether the first line is a header row or should be turned into positional keys.