Clean messy CSVs
in seconds
Drop a CSV file, toggle the cleaning operations you need, and export a polished result. Remove duplicates, trim whitespace, fix casing — all without uploading a single byte.
| name | company | revenue | |
|---|---|---|---|
| John Smith | john@acme.com | Acme Inc | $12,500 |
| john smith | JOHN@ACME.COM | acme inc | $12,500 |
| — | — | — | — |
| Jane Doe | jane@corp.io | Corp LLC | $8,200 |
Every cleaning operation you need
Built for data analysts, marketers, and developers who deal with messy exports every week.
Remove Duplicates
Instantly find and remove identical rows. Clean datasets in one click.
Trim Whitespace
Strip leading and trailing spaces from every cell. Fix invisible formatting issues.
Remove Empty Rows & Columns
Clean up blank rows and columns that clutter your data export.
Fix Casing
Standardize text to UPPERCASE, lowercase, or Title Case per column.
Three steps to clean data
Drop Your CSV
Drag and drop a CSV file or click to browse. Supports files up to 50MB.
Pick Operations
Toggle the cleaning operations you need — dedup, trim, fix casing, find-replace.
Export Clean Data
Preview changes, then download your cleaned CSV. Done in seconds.
100% Private
Files never leave your browser. Zero uploads, zero tracking, zero risk.
Instant Processing
Web Worker-powered engine handles thousands of rows without freezing your browser.
No Installation
No Java, no downloads, no setup. Just open your browser and drop a file.
Pricing
$5/month for this app (cancel anytime), or $15/month for Crate Pass (all apps).
Prices shown exclude applicable taxes.
Crate Pass
$15 /month
- ✓ All Cashew Crate apps
- ✓ Everything in Pro
- ✓ No ads anywhere
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- ✓ Cancel anytime
Frequently Asked Questions
Is my data safe with RowSweep?
Yes. RowSweep processes everything in your browser. Your CSV files never leave your device — no uploads, no servers, no cloud storage.
What file size can RowSweep handle?
RowSweep can handle CSV files up to 50MB. Processing happens in a Web Worker so your browser stays responsive even with large files.
What cleaning operations are available?
RowSweep offers: duplicate row removal, whitespace trimming, empty row/column removal, case fixing (UPPER, lower, Title Case), and find-and-replace across any or all columns.
Is RowSweep free?
Yes, RowSweep offers a free tier with 1 cleaning operation per day. Upgrade to Pro for $5/month for unlimited usage and an ad-free experience.
Does RowSweep work offline?
RowSweep works best with an internet connection for authentication and ads, but the core CSV processing happens entirely in your browser using local JavaScript.
Stop wasting time on messy CSVs
Join thousands of data professionals who clean their exports with RowSweep.
Clean a CSV Now