01
A folder in. A clean folder out.
Add multiple files or a complete folder. Each result receives a collision-safe name, so the original is never overwritten.
Local-first data utility for Windows
Clean messy CSV files before they cost you a day.
Batch-clean exports, normalize headers, remove duplicates, and keep an audit trail. Your files stay on your computer.
- No account
- No telemetry
- No file uploads
CSVcustomer_export.csv128 KB
CSVinventory_oct.csv86 KB
CSVmailing-list.csv42 KB
Cleaning rules
3 files ready0 bytes uploaded
100%local processing
4delimiter formats
4common encodings
HTMLbefore/after reports
Try the workflow
See the cleanup, line by line.
This sample runs entirely in your browser. It demonstrates whitespace cleanup, normalized headers, empty-row removal, and exact deduplication.
MESSY INPUT
Clean locally
CLEAN OUTPUTReady
0 duplicates removed
0 empty rows removed
0 cells changed
Built for repeatable work
Not another online converter.
Pro is designed for recurring client exports and business files where privacy, predictable output, and a record of changes matter.
Preview before processing
Inspect encoding and delimiter detection against the first rows before running a batch.
Evidence, not guesswork
Every batch produces a before/after report that highlights each changed cell, plus JSON reports with rows read, rows written, duplicates and empty rows removed.
Profiles for every client
Start from built-in presets such as Excel-ready semicolon output, or save your own rules per client. Profiles stay on your computer—no cloud account or sign-in.
International CSV support
Auto-detect UTF-8, UTF-8 BOM, Windows-1251, and Latin-1. Handle comma, semicolon, tab, and pipe delimiters.
Local by design
Your customer list is not our dataset.
Smart CSV Cleaner Pro makes no network requests. There is no account, analytics SDK, ad network, cloud processing, or telemetry. Processing happens on the Windows computer where the application is running.
One-time licenses
Start small. Keep the tool.
No subscription is planned for version 1. Updates within the purchased 1.x release are included.
PERSONAL
$15
One named user · up to 3 devices- Windows desktop app
- Batch folder processing
- Audit reports
- Commercial client work
BEST VALUE
TOOLKIT
$29
Cleaner Pro + opportunity toolkit- Everything in Personal
- Opportunity Ranker package
- CSV workflow templates
- Priority 1.x updates
BUSINESS
$59
Up to 5 users in one business- Everything in Toolkit
- Multi-user license
- Deployment notes
- Business usage rights
Checkout will activate after payment-provider verification. The free open-source CLI remains available on GitHub.
Questions
Before you run the first batch.
Does the app upload my CSV files?
No. Version 1.0.0 has no networking code. Files are read and written on the local Windows computer.
Does it overwrite the original?
No. Outputs use a _cleaned.csv suffix. If a name already exists, the app adds a number instead of replacing it.
Can I use it for paid client work?
Yes. The Personal license permits commercial data-processing work by the named buyer. A Business license covers multiple users.
Why might Windows show a warning?
The first release is independently distributed and is not code-signed. Verify the official download and its published SHA-256 before running it.
Who processes the payment?
Checkout is handled by Lemon Squeezy, the merchant of record. They accept cards and PayPal, calculate sales tax or VAT for your country, and email your receipt and download link instantly.
What if it doesn't work for me?
If the app does not run on your Windows 10/11 computer or does not do what this page describes, ask for a refund within 14 days of purchase. See the license and refund terms.
How do I get help?
Reply to your purchase receipt email — it reaches the developer directly. Bug reports for the free CLI can also be opened on GitHub.