Are NanoTools completely free to use?

Yes, all basic tools on NanoTools are completely free to use with no registration required. We offer premium features for power users.

Is my data secure when using NanoTools?

Your files are processed securely and are automatically deleted after processing. We do not store your files or data on our servers.

No installation required. All tools work directly in your browser on any device - computer, tablet, or smartphone.

We support a wide range of formats including PDF, JPG, PNG, WebP, GIF, JSON, XML, CSV, and many more depending on the tool.

Split CSV columns online for free. Divide CSV files by columns. Extract specific fields.

Extract specific columns from your CSV files

Delimiter

First row is header

Upload CSV File

Click to select or drag and drop

How to use:

1

Select the CSV file containing columns you want to extract

2

Select comma, semicolon, or tab based on your CSV format

3

Check the boxes for columns you want to keep

4

Get a new CSV file with only your selected columns

Supports comma-separated, semicolon-separated, and tab-separated values (CSV, TSV).

Yes, select any combination of columns regardless of their order in the original file.

Yes, the first row is automatically detected as headers and included in the output.

CSV files up to 10 MB are supported for splitting.