CSV Column Appender Tool

Your "CSV Column Appender Tool" is designed to help users add a new column to existing CSV (Comma-Separated Values) data. Here are the key details about this tool:

1. Input Required:

   - CSV Data: Users can paste or upload their existing CSV data, which may include multiple rows and columns.

2. Functionality:

   - Users can specify:

     - New Column Name: The header for the new column.

     - Column Values: The values to fill in the new column, which can be a single value for all rows or a list of values corresponding to each row.

   - The tool appends the new column to the end of the existing CSV data.

3. Output:

   - Displays the updated CSV data with the new column included.

   - Optionally allows users to download the modified CSV file.

4. User-Friendly Interface:

   - Simple input field for pasting CSV data.

   - Input fields for the new column name and values.

   - Clear output showing the resulting CSV format.

5. Optional Features:

   - Ability to handle different types of input (e.g., allowing spaces after commas).

   - Validation checks for correct CSV formatting and input values.

- Data Management: Useful for users who need to enhance existing datasets by adding relevant information.

- Data Analysis: Helps analysts create more comprehensive datasets for better insights.

- Reporting: Assists in preparing data for reports or presentations by appending necessary columns.