Free CSV tools

Clean a file, find duplicates, or see what changed between two versions. Everything runs on your own device.

Processed locally in your browser. File contents are not uploaded. No account needed.

Prefer a full-screen workspace? Open Rote Workspace — the same tools in one place.

Your files stay on your device

Rote Workspace processes your selected files locally in your browser. Your file contents are not uploaded to our servers for processing. How we handle data

What they open

CSV, TSV and other delimited text files up to 50 MB, in UTF-8, UTF-16 or Windows-1252, and Excel .xlsx workbooks up to 10 MB, one sheet at a time. No file to hand? Download a sample.

Reusable settings

Save the cleaner's or duplicate finder's settings as a workflow, in your browser or as a small JSON file, and apply them to next week's file. Or start from a ready-made template for Shopify, WooCommerce, bank, email list and stock count exports.

Want this on a schedule?

Doing the same clean-up every week? Rote Assistant, the desktop app (coming soon), saves the steps as a job and runs them on next week's file — and tells you when the columns change. Get Rote Assistant.