Submit a tool Sign in
Live

Free CSV Cleaner — Tidy Messy Spreadsheets in Your Browser

Trims cells, removes duplicate rows, normalizes dates, and fixes casing locally in the browser.

1. Free CSV Cleaner is a browser-based productivity tool for cleaning messy CSV files without uploading them to a server.

The page says users can add a CSV file, trim extra spaces from every cell, remove exact duplicate rows, normalize dates to YYYY-MM-DD, and optionally fix random casing.

The tool treats the first row as a header. The casing option only applies from row 2 onward, which helps avoid changing column names.
The page source shows that the cleaned file is generated in the browser as a downloadable CSV. All processing happens locally and nothing is uploaded.

It handles quoted commas correctly and works with comma-delimited CSV files. Everything runs locally in your browser: your file is never uploaded anywhere. Free, no signup.

Features

  • Trims extra whitespace from every cell
  • Removes exact duplicate rows
  • Standardizes recognized dates to YYYY-MM-DD
  • Summary stats plus a change log of the first 25 changes
  • Runs 100% locally in your browser, files are never uploaded

Use cases

  • Cleaning reseller inventory exports before listing
  • Tidying messy supplier spreadsheets
  • Preparing CSVs for import into other tools
  • Fix inconsistent name casing while preserving the header row
  • Prepare a cleaner CSV without uploading the file

Frequently asked questions

Is my file uploaded anywhere?

No. All processing happens locally in your browser.

What date formats are recognized?

MM/DD/YYYY and MM-DD-YYYY are converted to YYYY-MM-DD.

Does casing cleanup affect headers?

No. The page says casing is only fixed from row 2 on

What file type does it clean?

The page is specifically for CSV files

Does it remove blank rows?

The page source shows empty rows are filtered out during cleaning

What we verified

Public API?
Not stated
Self-hostable?
Not stated
Free tier without a credit card?
Yes, the page is labeled Free CSV cleaner and shows no account or checkout requirement
Pricing model?
Free
Price?
Free
Data region / hosting location?
Not stated
Named integrations?
Not stated

Could not be verified

The site does not state maximum file size, browser support, delimiter support beyond comma-separated CSV, encoding support, API access, self-hosting, source-code availability, or privacy policy details.

0 comments

Sign in to leave a comment.

No comments yet. Say something useful and be the first.