Deterministic CSV normalization for production systems.

KateNoji turns messy CSV files into predictable, schema-safe JSON — with explicit warnings and zero silent failures.

Who It's For

Built for:

  • Backend developers
  • SaaS products with CSV imports
  • ETL & data ingestion pipelines
  • Internal tools handling user uploads

Not for:

  • Spreadsheet editing
  • Manual CSV cleanup
  • No-code tools
  • One-off file conversions

What It Does

Why KateNoji?

How It Works

Upload CSV
POST /v1/normalize
Receive clean JSON + schema

Example Response

What you get back
{
  "schema": {
    "email": "string",
    "created_at": "date",
    "amount": "number"
  },
  "data": [
    {
      "email": "user@test.com",
      "created_at": "2024-01-15",
      "amount": 1234.56
    }
  ],
  "meta": {
    "rows_processed": 3,
    "encoding_detected": "utf-8",
    "delimiter_detected": ",",
    "warnings": []
  }
}
Try the API