Frequently Asked Questions

Question 1

Is this CSV merger really free?

Accepted Answer

Yes, 100% free with no limits. Merge as many files as you want without signing up or paying anything.

Question 2

Is my data safe?

Accepted Answer

Your data never leaves your browser. All merging happens locally on your device using JavaScript. We don't upload, store, or have access to your files.

Question 3

What order are files merged in?

Accepted Answer

Files are merged in the order shown in the list. You can drag files to reorder them before merging.

Question 4

What happens to the header row?

Accepted Answer

The header row from the first file is kept, and header rows from additional files are automatically skipped to avoid duplicates.

Question 5

What's the maximum file size?

Accepted Answer

Each file can be up to 10 MB, with a total limit of 50 MB for all files combined.

Question 6

What if my CSV files have different columns?

Accepted Answer

The tool will warn you if your files have different column headers. You can choose to proceed anyway or cancel. For best results, ensure all files have the same column structure.

Question 7

Can I download as Excel instead of CSV?

Accepted Answer

Yes! After merging, you can download as either CSV or Excel (XLSX) format with one click.

Question 8

Can I track which file each row came from?

Accepted Answer

Yes! Enable the "Add source filename column" option to add a column showing the original filename for each row.

Question 9

Can I remove duplicate rows?

Accepted Answer

Yes, enable the "Remove duplicate rows" option. Rows must be exact matches to be considered duplicates.

Question 10

Can I remove empty rows?

Accepted Answer

Yes, enable the "Remove empty rows" option. Rows where all cells are empty or contain only whitespace will be removed.

CSV Merge Tool

Merge CSV Files

Why use this tool?

100% Private

Instant Merging

Drag to Reorder

CSV or Excel

Frequently Asked Questions

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