CSV tools
CSV repair, conversion, and import cleanup guides
Start with the repair workspace, or use these focused pages for common CSV and Excel workflows like CSV to Excel, Excel to CSV, delimiter cleanup, duplicate headers, and app-specific import problems.
CSV to Excel
Convert CSV to Excel after fixing import issues
Upload a CSV file, scan for structural problems, preview repairs, and export the cleaned result as an Excel .xlsx workbook.
Excel to CSV
Convert Excel to cleaned CSV for imports
Upload an Excel workbook, use the first worksheet in the repair flow, and export a cleaned CSV for another importer.
CSV import fixer
A CSV import fixer for structural file problems
Detect bad delimiters, duplicate headers, inconsistent rows, and more before your target system rejects the file.
Repair CSV file
Repair a CSV file in the browser
Upload a messy export, apply one-click repairs, preview the result, and download a cleaner import-ready CSV.
Malformed CSV repair
Fix malformed CSV files before your import breaks
Scan malformed CSV exports, preview structural issues, and repair common formatting problems before importing into another system.
Wrong delimiter
Fix CSV files with the wrong delimiter
Catch delimiter mismatches early and export a cleaned CSV using comma, semicolon, or tab formatting.
Encoding issues
Fix common CSV formatting and encoding headaches
ImportFix focuses on the structural cleanup that often shows up alongside CSV encoding and export issues.
Row length error
Fix CSV row length errors before import
Normalize rows with missing or extra cells so every record matches the expected file shape.
Duplicate headers
Repair duplicate headers in CSV files
Make duplicate header names unique without losing readability, so import mapping stays predictable.
Shopify CSV import
Fix Shopify CSV import errors before you upload products
Clean up CSV structure problems that commonly break Shopify product imports, including missing headers, wrong delimiters, and malformed rows.
HubSpot CSV import
Fix HubSpot CSV import errors before mapping contacts
Clean up structural CSV issues that commonly block HubSpot imports, including duplicate headers, inconsistent rows, and formatting problems.
Airtable CSV import
Fix Airtable CSV import errors before creating a new table
Clean up CSV structure before importing into Airtable, especially when delimiters, blank rows, or malformed headers cause friction.
Mailchimp CSV import
Fix Mailchimp CSV import errors before uploading contacts
Repair CSV structure problems that can interfere with Mailchimp contact imports, including malformed rows, blank lines, and duplicate headers.