← All tools

CSV cleaner

Trim cells, remove empty rows and normalize headings. Free, private and browser-based.

Read-only viewer
Open files
0 / 5

Free workspace supports five open files. Each file can be up to 100 MB.

About the CSV cleaner

Tidy a messy CSV file in one go: trim spaces from every cell, remove empty rows and normalise the column headings so they are consistent. Clean data imports into spreadsheets, databases, email tools and online shops without errors, and duplicates become easier to spot.

How to use it

  1. Open the CSV file.
  2. Press Trim cells to remove leading, trailing and double spaces.
  3. Remove blank rows and tidy the headings.
  4. Download the cleaned CSV.

Tip: Clean first, then remove duplicates: "Ali" and "Ali " only count as the same row once the extra space is gone.

Questions

What does it clean?

Extra spaces in cells, completely empty rows and inconsistent column headings.

Does it change my original file?

No. You download a new, cleaned file; the original stays as it was.

Can it remove duplicates too?

Use the Duplicate remover, or CSV Studio for cleaning, deduplicating, splitting and more in one place.

Does it work with large files?

Yes. Everything runs on your device, so the limit is your device's memory.

Is my file uploaded?

No. The file is opened and processed in your browser; it never leaves your device and nothing is stored on a server.