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CSV Cleaner: Trim Spaces and Remove Duplicates

For analysts tidying exports before loading them into Excel, pandas or a database. Paste messy CSV and get trimmed, de-duplicated rows with a before and after row count.

FreeRuns in your browserNothing uploadedNo sign-up neededAll 10 tools in the Data Toolbox
Keep this resultSign in to email it to yourself or save it to your profile. The tool itself never needs an account.

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How to use

How to use the CSV Cleaner

  1. Paste your CSV into the CSV box.
  2. Keep or untick Trim spaces, Drop empty rows and Remove duplicate rows.
  3. Click Clean.
  4. Check the before and after row count, then copy the cleaned CSV.
Worked example

An example, step by step

You enter

city, role ,years Pune,DevOps,5 Pune,DevOps,5 Lisbon , Data ,3

The tool shows

city,role,years Pune,DevOps,5 Lisbon,Data,3 (4 to 3 rows)

FAQ

Questions about the CSV Cleaner

How are duplicate CSV rows detected?

Two rows are duplicates when every cell matches exactly after trimming (if Trim spaces is on). The first occurrence is kept and later copies are removed.

Does the cleaner remove duplicates based on one column?

No. It compares whole rows. To de-duplicate on a single column, copy that column into the List Dedupe tool instead.

Will cleaning break quoted fields with commas?

No. The CSV is parsed with quote handling first, and fields that contain commas, quotes or line breaks are re-quoted in the output.

Is the CSV Cleaner free and private?

Yes. It is free, needs no sign-up and runs entirely in your browser, so what you type is not uploaded. You only sign in if you want to email a result to yourself or save it to your CareerByteCode profile.

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