Skip to content
FileKit logo

Your data never leaves your device

Smart CSV Cleaner

Clean messy CSV data privately on your device.

Quick answer

Remove duplicate and empty rows, trim unwanted spaces, fix common text encodings, and optionally normalize column names. Everything runs privately on your device — no upload, subscription, or account required.

How to smart csv cleaner

  1. 1

    Upload CSV

    Choose a CSV file up to 20 MB.

  2. 2

    Choose cleanup

    Select duplicate removal, empty-row removal, trimming, and header normalization.

  3. 3

    Download

    The cleaned data is exported as a UTF-8 CSV, ready for Excel or Google Sheets.

Frequently asked questions

Related tools

Stay in flow — try the next tool without leaving FileKit.

On-device

CSV to JSON

Convert CSV files to JSON arrays.

On-device

JSON to CSV

Convert JSON arrays to spreadsheet CSV.

On-device

JSON Formatter

Format, validate, and minify JSON.

Free, private, no watermark — powered by FileKit. Privacy details