CleanSheet

Clean your spreadsheets in seconds. No code required.

Upload any Excel or CSV file. CleanSheet detects duplicates, trims whitespace, normalizes text, handles missing values, and exports a clean file. All in your browser.

Your data stays on your computer.

CleanSheet runs entirely in your browser. Your files are never uploaded, sent, or shared. Everything happens locally.

Clean a File Now

Before

Name	Region	Revenue
Jhon Doe	Nroth Amrica	€12.500,00
ÃƒÂ©milie Müller	Euorpe	$8,320.50
JANE SMITH	ASIA-PACIFIC	15000
##N/A##	Unkown	N/A
Jhon Doe	North America	12500.00

After

Name	Region	Revenue
John Doe	North America	12500.00
Émilie Müller	Europe	8320.50
Jane Smith	Asia-Pacific	15000.00
Garbled text fixed. Typos corrected. Duplicates removed. Formats unified.

Fix Garbled Text

Automatically repair encoding issues like "ÃƒÂ©milie" to "Émilie" and corrupted characters.

Correct Typos

Smart detection of common typos. "Nroth Amrica" becomes "North America" automatically.

Duplicate Removal

Automatically detect and remove duplicate rows to keep your data unique and clean.

Whitespace & Trimming

Remove leading, trailing, and extra spaces. Normalize whitespace across all cells.

Case Normalization

Convert "JANE SMITH" to "Jane Smith". Fix inconsistent capitalization across columns.

100% Private

All processing happens in your browser. Your data never leaves your device.

Upload Your File

Drag and drop your CSV or Excel file. No account needed.

Choose Options

Select what to clean: duplicates, formatting, numbers, and more.

Download Clean Data

Get your cleaned file instantly as CSV or Excel.

Free Demo

Free

Up to 100 rows
All smart cleaning features
PDF & JSON export included
CSV & Excel export (Pro only)
Smart detection

Try Free Demo

Smart Pro

$49 USD · One-Time

Unlimited rows
All smart cleaning features
CSV & Excel export (.csv, .xlsx)
Free updates forever

Get Smart Pro

Is my data really private? +

Yes, 100%. CleanSheetSmart runs entirely in your browser. Your files are processed locally on your computer and are never uploaded to any server. You can even use it offline.

What file formats are supported? +

CleanSheetSmart supports CSV (.csv) and Excel files (.xlsx, .xls). You can export your cleaned data in both formats (Excel export is a Smart Pro feature).

How do I get the Smart Pro version? +

Click "Get Smart Pro" and complete the purchase via Stripe. You will instantly receive a ZIP file containing the full Smart Pro version. Simply unzip and open index.html in your browser. No installation needed.

Can I get a refund? +

Yes. We offer a 30-day money-back guarantee. If CleanSheetSmart does not meet your needs, just email us and we will refund your purchase. No questions asked.

Does it work offline? +

Yes. Once loaded, CleanSheetSmart works completely offline. All processing happens locally in your browser with no internet connection required.

CleanSheet

Your data stays on your computer.

Professional Data Cleaning

Fix Garbled Text

Correct Typos

Duplicate Removal

Whitespace & Trimming

Case Normalization

100% Private

Three Simple Steps

Upload Your File

Choose Options

Download Clean Data

Clean Your Data

CleanSheetSmart

Drop your file here

Cleaning Options

Smart Detection PRO

Basic Cleanup (Recommended)

Numbers & Dates

Text Formatting

Cleaning Complete!

Cleaning Report

Cleaned Data Preview (First 10 rows)

Original Data (First 10 rows)

Cell-by-Cell Changes

Smart Column Analysis

Simple, Fair Pricing

Free Demo

Smart Pro

Frequently Asked Questions

Ready to Clean Your Data?