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Business tools

Clean a messy CSV without a local spreadsheet install

Upload, map columns, preview fixes, set problem rows aside, then download a clean file. Processing is free. 1 credit on the cleaned download.

CSV studio mapping columns and previewing cleaned rows

Exports arrive with the wrong encoding, duplicate emails, mixed date formats, and headers nobody named twice the same way. CSV Studio is an interactive pass: detect, map, preview, then download.

Product: CSV cleaner and validator.

CSV studio
CSV studio

Steps

  1. Open CSV studio from My tools.
  2. Upload CSV, TSV, or Excel. You can add more than one file.
  3. Confirm detected format. Map source columns to clean names (presets for Contacts, Orders, Invoices, or your own).
  4. Toggle cleaners (trim, dates, currency, dedupe, required fields).
  5. Preview before/after. Problem rows can go to a separate file so the cleaned sheet stays import-ready.
  6. Process (free). Download the cleaned file (1 credit the first time). Quarantine CSV and report.html are free.

Related

Try it

Clean a CSV

Preview is free. 1 credit on first download. Claim 2 credits after you verify.

Clean a CSV

FAQ

When am I charged?
Processing, preview, and re-runs are free. 1 credit on the first download of the cleaned spreadsheet for that job. Problem rows and the HTML report are free.
Can I merge several files?
Yes. Upload multiple CSV or Excel files in one session. Columns are unioned and aligned.
What happens to rows that fail validation?
They go to a separate quarantine file with a free HTML report. The cleaned download only includes rows that passed, so you can import without fixing bad lines by hand.