Remove Duplicate Rows

About This Spell

With a wizard's whisper, Remove duplicate rows from a CSV by matching on key columns or by entire row when no keys are specified. Preserves the first occurrence and keeps the header if present.

How to Cast the Spell:

Use your magic to Paste CSV data.
Use your magic to Optionally set header, delimiter, and quote.
Use your magic to Provide key columns (names or indexes) or leave blank to dedupe full rows.
Use your magic to Click Deduplicate.

What is CSV Deduplicator?

CSV Deduplicator is a free data wrangler from WizardOfAZ. Use it to work with CSV files using flexible options as part of your analytics and reporting, without installing extra software.

Because everything happens locally in your browser, your spreadsheets stay under your control while you work with CSV files using flexible options.

Popular ways to use CSV Deduplicator

Streamline analytics and reporting by using CSV Deduplicator to work with CSV files using flexible options.
Share deliverables faster—processed tabular datasets are ready for download in seconds.
Combine CSV Deduplicator with other WizardOfAZ tools to keep complex workflows in one browser tab.

Examples and workflow tips

Upload a sample file, cast the spell to work with CSV files using flexible options, and download the processed result instantly.
Bookmark the CSV Deduplicator in your browser so recurring tasks stay only one click away.
Share the spell with teammates who need a quick, no-install way to work with CSV files using flexible options.

Frequently asked questions

Is the CSV Deduplicator secure?

Yes. The CSV Deduplicator runs entirely in your browser, which means your spreadsheets never leave your device.

What can I do with the CSV Deduplicator?

You can analytics and reporting by processing tabular datasets without uploading them to an external service.

Can I use CSV Deduplicator on mobile?

Yes. WizardOfAZ tools are responsive, so you can launch the spell on desktops, tablets, or phones without installing extra apps.

Related tools to explore

Expand your toolkit with other WizardOfAZ spells that complement CSV Deduplicator:

CSV Filter — Use it to work with CSV files using flexible options.
CSV Merge Join — Use it to merge tabular datasets into a single download.
CSV Sampler — Use it to work with CSV files using flexible options.