Normalize Header Row

Clean up headers: trim spaces, standard casing, remove duplicates. 100% private—your data stays in your browser.

No uploadsNo signupInstant results
1

Upload Your CSV

Drop a file with messy or inconsistent headers.

2

Header Cleanup

We trim spaces, fix casing, and handle duplicates.

3

Download Normalized CSV

Get a file with clean, consistent column names.

Click to upload or drag & drop

Supported files: CSV, TXT, JSON (Max 20MB)

Drop your file here

or click to browse

CSV files with extra spaces, inconsistent casing, or duplicate column names.

Max 20MB 100% Private

What This Tool Does

This tool standardizes the first row of your CSV. It can lower-case headers, replace spaces with underscores, and rename duplicate columns (e.g., Name, Name_2).

How It Works

1Upload your CSV.
2Choose your desired case (Snake Case, Camel Case, etc.).
3The tool rewrites the header row.
4Download the file with developer-friendly headers.

Input Format

CSV with messy or non-standard headers.

Output Format

CSV with clean, distinct headers.

When to Use This Tool

  • Preparing data for database import (Postgres/MySQL).
  • Header names have trailing spaces ('Name ').
  • You have duplicate column names causing errors.