CSV Header Viewer

Extract and view all column header names and field indices from CSV or TSV data.

How It Works & Processing Standards

Extract and view all column header names and field indices from CSV or TSV data.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Desktop max file size: 50MB
  • Mobile max file size: 20MB

CSV Header Viewer is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use CSV Header Viewer

  1. 1
    Input CSVPaste your CSV content or first few rows.
  2. 2
    Extract HeadersIdentify first-row column labels.
  3. 3
    Copy Header ListCopy headers as an array, bulleted list, or comma-separated string.

Examples

Extracted Headers
Input: user_id,username,email,created_at
Result: 1. user_id 2. username 3. email 4. created_at

Common Use Cases

  • Creating SQL CREATE TABLE column definitions from CSV exports
  • Mapping external dataset columns to internal database schemas
  • Documenting API data formats and CSV report specifications

Frequently Asked Questions (FAQ)

Can I export the header names as JSON?

Yes, you can copy the extracted headers as a JSON array of strings with a single click.

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