Extract Unique CSV Values, free in your browser

Choose a CSV or TSV column and export each distinct non-empty value once, preserving the order in which values first appear.

How to extract unique CSV values

1. Choose a CSV or TSV file.
2. Select the column and optional case-insensitive matching.
3. Extract and download the unique values as a one-column CSV.

Limits & good to know

• Files up to 50 MB are processed on your device.
• The first row is treated as column names by default.
• Case-insensitive mode compares trimmed values but retains the first original spelling.

Frequently asked questions

Are my files uploaded to a server?

Your files are processed on your device, not uploaded to our servers. Your file and edits are saved in this browser for recovery, and previous documents remain in Saved drafts when you open another file. Use Saved drafts to resume or delete individual copies, or clear this site’s browser data to remove all copies. Browser storage can be cleared or become unavailable; download important work.

Does this change the order of values?

No. The first occurrence of each value determines its position in the output.

Is this really free, or free "until you hit a limit"?

Really free. Unlike most "free" PDF sites there is no task-per-day cap, no locked Pro features, no watermark stamped on your file, and no payment step before download. Every tool is the full tool.