Prepare CSVs for Case Management Import Without Cloud Tools
Clean and format your data for Clio, MyCase, or PracticePanther — without uploading confidential client information.
Migration data stays on your computer
Safe for full client database exports
Free preview • $3 to download cleaned file
Sound familiar?
Case management imports fail with cryptic errors about data format
You're switching systems and need to migrate thousands of client records cleanly
Manual data cleanup in Excel takes days and introduces new errors
Why Law Firm Administrators choose browser-based cleaning
Your firm is migrating from an old system to Clio. You have 5 years of client data: 2,000 matters, 800 clients, mixed date formats, duplicate contacts, and encoding issues from the legacy system. Clio's import keeps failing. Data cleaning services want you to send them the entire client database. With CSVCleaner, you fix dates, remove duplicates, and repair encoding locally — then import clean data to Clio.
Your data never leaves your computer
All processing happens in your browser
No cloud uploads required
Unlike AI tools that need your data
Works offline after loading
No internet needed to process files
No account or login needed
Just upload and clean
What you can fix
Standardize Dates
Convert all dates to your new system's required format.
Remove Duplicates
Deduplicate before import to start fresh.
Fix Encoding
Ensure names and notes transfer correctly.
Trim Whitespace
Remove hidden spaces that cause import field mismatches.
Ready to clean your data?
Preview for free. See exactly what will be fixed before you pay. Your data stays in your browser the entire time.
Prepare Your Import File