CSV File Merger

Your data never leaves your device. All CSV processing happens entirely in your browser - no files are uploaded to servers, no data is stored, and no privacy concerns. Merge sensitive business data with complete confidence.

Drag, drop, and merge in seconds. Smart autocomplete helps you find the right columns to merge, while visual previews show exactly what you're getting. No technical skills required - if you can use spreadsheets, you can merge CSVs.

Choose exactly which columns to include in your final export. Search and filter through hundreds of columns, see live data previews, and download only the data you need. Perfect for creating targeted reports from complex datasets.