TFToolForgeLive site · Files stay on your device
Free working tool

Paste a CSV.
Download a cleaner one.

1. Paste or choose a file. 2. Pick the cleanup. 3. Click the green button. Your file is processed in this browser and is never uploaded.

Use the CSV Cleaner
Working sample loadedEdit it, paste your own CSV, or choose a file.
01

Paste CSV or choose a file

Cleaning options
3 data rows3 columns

Working example ready — replace it with your CSV or clean the sample again.

02

Your clean CSV

100% browser-basedNo signupNo file uploads
How it works

A small tool with a strict privacy boundary.

01

Add your data

Paste CSV text or choose a local file up to 10 MB.

02

Choose the cleanup

Trim cells, drop empty lines, and remove exact duplicate records.

03

Download the result

Preview, copy, or save a standards-friendly CSV file instantly.

For bigger jobs

Turn repeat cleanup into one click.

ToolForge Data Pro processes folders, remembers recipes, and handles large local files on Windows.

Explore Data Pro
FAQ

Questions, answered.

Does ToolForge upload my CSV?

No. Cleaning happens entirely inside your browser. The file never leaves your device.

Will quoted commas and line breaks work?

Yes. The parser handles quoted commas, escaped quotation marks, and line breaks inside quoted cells.

What counts as a duplicate?

Two data rows are duplicates when every cell matches after your selected whitespace cleanup. The header row is always preserved.