CSV cleaner data profiler

Inspect missing cells and remove duplicate rows.

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CSV cleaner data profiler processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

CSV with a header row

Result

Options and local file

CSV separator

Whitespace

Open a text file on this device

Optional settings apply only to this tab.

Your result

Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.

Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.

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Updated 2026-09-20

CSV cleaner data profiler explained

Profile a CSV before changing it: count empty cells, distinct text values and exact duplicate rows. The cleaning mode removes repeated rows in their original order, with an explicit option to trim surrounding whitespace.

Next: Spreadsheet compare reconciliation

Next: CSV JSON converter

A worked example

Two rows containing 1 and an empty cell produce a duplicate-row count of 1. Clean mode retains the first row and keeps the empty cell.

Before you use the result

Quoted fields, embedded newlines and doubled quote characters are supported. Headers must be unique and every row must have the same number of fields. Cell values stay text, including leading zeros. Spreadsheet formulas are not evaluated. Distinct values are case-sensitive. This tool does not infer types, fill missing values or decide which conflicting business record is correct.

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ToolOctopus. “CSV cleaner data profiler.” Updated 2026-09-20. https://tooloctopus.com/csv-cleaner-data-profiler.

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