FuseCSV

Effortless CSV Merging

• Drag and drop multiple CSV, TSV, or TXT files directly into the app

• Automatically combines files while preserving data integrity

• Intelligent column matching with real-time validation

• Visual feedback for files with mismatched column counts

Smart File Management

• Add individual files or entire folders (automatically scans recursively)

• Drag to reorder files in the merge sequence

• View file metadata at a glance: row count, column count, file size, delimiter type, and line endings

• Duplicate detection – prevents adding the same file twice

• Quick file preview with native macOS integration

Flexible Output Settings

• Delimiter Control: Auto-detect from first file or manually choose (comma, tab, semicolon, pipe)

• Line Ending Options: Auto-detect or specify (Unix/LF, Windows/CRLF, Classic Mac/CR)

• Header Management: Treat first row as header (includes only the first file’s header in output)

• Data Cleaning: Remove duplicate rows and empty rows during merge

• Settings persist between sessions

Real-Time Metadata Display

• Live statistics: total files, combined row count, estimated output file size

• Per-file details: row count, column count, delimiter type, file size, line ending format

• Color-coded indicators for file status and validation issues

• Progress tracking during large file merges

Pro Features (One-time $1.99 purchase)

• Unlimited row processing (Free tier: 10,000 rows)

• Unlimited file size support (Free tier: 5 MB per file)

• Optimized performance for large datasets

• All future Pro features included

User Experience

• Modern macOS design with support for Light and Dark modes

• Responsive interface optimized for Apple Silicon and Intel Macs

• Context menu shortcuts for quick access to common actions

• Keyboard shortcuts for efficient workflow

• Custom comic script font for app branding

Performance & Compatibility

• Supports CSV, TSV, and TXT file formats

• Recursive folder scanning for batch processing

• Non-blocking async operations for smooth performance

• Handles files with different delimiters and line endings

• Preserves data integrity during merge operations