Is my data uploaded to a server?

No. Files are processed locally in your browser and are not uploaded.

Which file types are supported?

TXT, CSV and XLSX files are supported.

Can I remove duplicate rows only from one column?

The initial version removes full duplicate rows. Column-specific cleaning can be added later.

Is there a file size limit?

Yes. The limit is 10 MB and up to 100,000 rows.

Can I download cleaned results?

Yes. Cleaned data can be downloaded as TXT, CSV or XLSX.

Yes. No account or payment is required.

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Remove Duplicate Lines Online

Paste text or upload TXT, CSV, or XLSX. Remove duplicate rows, trim spaces, drop empty lines, and download cleaned data — all in your browser.

Drag TXT, CSV, or XLSX here, or

Or paste text

Cleaning options

Sort rowsText case

How to clean your data

Paste data or drag a TXT, CSV, or XLSX file into the drop zone.
Choose cleaning options such as remove duplicates, trim spaces, or sort rows.
Click Clean data, review the preview and statistics, then copy or download the result.

About Data Cleaner

Data Cleaner helps you fix messy lists and spreadsheets from exports, CRM dumps, and copied text without opening Excel. Processing runs entirely in your browser, so files are not sent to a server. You can remove duplicate rows, trim whitespace, delete empty rows, sort alphabetically, change text case, and export to TXT, CSV, or XLSX.

More data cleaning pages

FAQ

Is my data uploaded to a server?: No. Files are processed locally in your browser and are not uploaded.
Which file types are supported?: TXT, CSV and XLSX files are supported.
Can I remove duplicate rows only from one column?: The initial version removes full duplicate rows. Column-specific cleaning can be added later.
Is there a file size limit?: Yes. The limit is 10 MB and up to 100,000 rows.
Can I download cleaned results?: Yes. Cleaned data can be downloaded as TXT, CSV or XLSX.
Is this tool free?: Yes. No account or payment is required.

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