Is my CSV data secure when using CSVClean?

Yes, absolutely. All CSV processing happens entirely in your browser using JavaScript. Your files never leave your device, and we have zero access to your data. Nothing is uploaded to our servers.

Do you store my CSV files?

No. We never store, log, or have any access to your CSV files. All processing is done locally in your browser, and data is automatically cleared from memory when you close the page.

How does CSVClean pricing work?

Free users can process CSV files up to 10,000 rows with basic features. Pro users ($10/month) can process up to 100,000 rows per file and access advanced features like duplicate removal, date standardization, and number formatting.

What file formats does CSVClean support?

We currently support CSV (Comma Separated Values) files. Your cleaned file will be exported as a CSV that you can open in Excel, Google Sheets, or any spreadsheet application.

Do I need to create an account to use CSVClean?

No account needed for basic use! You can clean CSV files up to 10,000 rows without signing in. An account is only required if you want to upgrade to Pro for larger files and advanced features.

v2.0 Now Available

Clean your CSVs
in seconds.

The most powerful CSV cleaner for your browser. Remove duplicates, fix dates, and standardize data without writing a single line of code.

No Data Stored

Secure Processing

30-Day Guarantee

Remove Duplicates

Instantly detect and eliminate duplicate rows across your entire dataset.

Clean Empty Data

Intelligently remove empty rows and columns to sanitize your files.

Standardize Formats

Fix inconsistent dates, numbers, and whitespace issues automatically.

Privacy First

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

Upload your CSV

Drag and drop or click to browse

Select File

Processed Locally

Never Stored

Max 5,000 rowsFREE PLAN

Upgrade to Pro

New

Process 100k rows & more

How It Works

Clean your CSV files in 3 simple steps

Upload Your CSV

Drop your file or click to browse. Max 10,000 rows on free plan.

Processed locally in your browser

Choose Cleaning Options

Select what to clean: duplicates, empty rows, formatting issues.

Zero data sent to servers

Download Clean File

Get your cleaned CSV instantly, ready to use.

Original file never stored

Made for
Data Analysts

Powerful enough for developers, simple enough for everyone. Clean your data in seconds, not hours.

Everything you need to clean your data

Professional-grade data cleaning tools accessible directly in your browser. Secure, fast, and private.

Eliminates redundancy instantlyEliminates redundancy instantly

Remove Duplicates

Instantly identify and remove identical rows to ensure data uniqueness.

BeforeAfter

john@example.com

jane@test.com

Ready for database importReady for database import

Smart Date Formatting

Standardize messy date formats into clean, ISO-8601 compliant strings.

BeforeAfter

12/01/23

2023-01-12

Jan 1st 2023

2023-01-01

2023.01.12

2023-01-12

Prepare for analysisPrepare for analysis

Number Cleaning

Strip currency symbols and special characters to get pure numeric values.

BeforeAfter

$1,234.56

1234.56

€ 450.00

450.00

1 000

1000

Fix matching errorsFix matching errors

Trim Whitespace

Remove invisible leading and trailing spaces that cause matching errors.

BeforeAfter

" Apple "

"Apple"

"Banana "

"Banana"

" Pear"

"Pear"

Clean up dataset noiseClean up dataset noise

Remove Empty Rows

Clean up your dataset by automatically removing rows with no data.

BeforeAfter

Row 1 Data

(empty row)

Row 3 Data

Focus on relevant dataFocus on relevant data

Remove Empty Columns

Detect and delete columns that contain absolutely no information.

BeforeAfter

Name | (Empty) | Email

Name | Email

Your Privacy Matters

Your data stays yours. Always.

We built csvclean with privacy at its core. Your sensitive data never leaves your device.

Browser-Only Processing

All data processing happens locally in your browser. Nothing is uploaded to our servers.

Instant Deletion

Your files are automatically deleted from memory once you close the page.

Zero Storage

We never store, log, or have access to your sensitive CSV data.

100% client-side. Your CSV files are processed entirely in your browser using JavaScript. We physically cannot access your data.

Frequently Asked Questions

Everything you need to know about csvclean

Clean your CSVs in seconds.

Remove Duplicates

Clean Empty Data

Standardize Formats

Privacy First

Upload your CSV

Upgrade to Pro

Upload Your CSV

Choose Cleaning Options

Download Clean File

Made forData Analysts

Everything you need to clean your data

Remove Duplicates

Smart Date Formatting

Number Cleaning

Trim Whitespace

Remove Empty Rows

Remove Empty Columns

Your data stays yours. Always.

Browser-Only Processing

Instant Deletion

Zero Storage

Upload Your CSV

Choose Cleaning Options

Download Clean File

Made forData Analysts

Everything you need to clean your data

Remove Duplicates

Smart Date Formatting

Number Cleaning

Trim Whitespace

Remove Empty Rows

Remove Empty Columns

Your data stays yours. Always.

Browser-Only Processing

Instant Deletion

Zero Storage

Clean your CSVs
in seconds.

Made for
Data Analysts

Made for
Data Analysts