CSNest
Clean, validate, and reshape CSV files with confidence
Fix broken CSVs fast for any platform. Auto-fix what is safe, flag what is risky, and export a clean file you can trust.
What it does
- Fix common CSV issues that break imports
- Normalize formatting such as spacing, casing, and columns
- Manually edit problem cells and export a clean CSV
- Fix and export CSV files
- 3 exports per month per device
- Access to all built-in formats
- No account required
- 100 exports per month
- Access to all built-in formats
- Account required
- Manage billing in Profile
- Unlimited exports
- Access to all built-in formats
- Custom Format Builder
- Save, reuse, import, and export formats
Upload a CSV, apply a format, and let the tool auto-fix safe issues. Review anything risky, then export a clean file.
Create reusable formats with column templates and rules. Perfect for repeat tasks like Shopify exports.
Do you upload my CSV to a server?
The fixer runs in your browser for the core parsing and edits. When you export, your cleaned CSV is generated locally.
What kinds of problems can it fix automatically?
Safe fixes include trimming extra spaces, normalizing empty cells, and applying consistent formatting. Anything that could change meaning is flagged so you can review it before export.
What are Custom Formats?
Custom Formats let you save reusable column templates and cleanup rules so repeat jobs take seconds. Advanced plan is required for creating and managing formats.
Can I cancel or change plans later?
Yes. You can upgrade, downgrade, or cancel from your Profile at any time.