FileStripe

Merge CSV Files

Combine several CSV files into one, matching columns by header name, with an optional source-file column.

Free to use · No account needed · Files are processed on your device and never uploaded

Merge CSV: how it works

Join monthly exports, survey batches or split files back together. Columns are matched by name, so files with columns in a different order or with extra columns still line up.

How to merge CSV files

  1. Add two or more CSV files.
  2. Choose how to match columns.
  3. Download the merged CSV.

Features

  • Header matchingColumns line up by name.
  • Source columnSee where each row came from.
  • Excel friendlyUTF-8 with BOM.
  • PrivateNo upload.

Frequently asked questions

Is the Merge CSV free?

Yes. The Merge CSV is completely free with no sign-up, no watermarks, no daily limits and no premium tier.

Are my files uploaded to a server?

No. FileStripe processes your files locally in your web browser using JavaScript. Nothing is uploaded, so the Merge CSV is safe for private photos and confidential documents and even works offline once the page has loaded.

Does it work on iPhone and Android?

Yes. The Merge CSV works in Safari, Chrome, Firefox, Edge and Samsung Internet on phones, tablets and computers. On a phone you can pick files from your photo library or files app and share the result straight to another app.

Last updated · Processing happens locally in your browser.

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