File Chunker

Overview

A file splitting and reassembly tool that runs entirely in your browser. Split large files into smaller chunks for easier transfer or storage, then reassemble them back to the original file whenever needed.

Features

• Split Files: Break any file into chunks of a specified size (in bytes, KB, or MB)
• Reassemble Files: Combine chunks back into the original file
• Multiple Input Methods: Upload chunks via ZIP file or select individual files
• Smart Ordering: Chunks are automatically sorted by filename for correct reassembly
• Drag & Drop: Easy file upload with drag and drop support
• Client-Side Processing: All operations happen locally for maximum privacy

Use Cases

• File Transfer: Split large files to fit within email attachment limits
• Cloud Storage: Break files into smaller parts for services with file size restrictions
• Data Backup: Create manageable chunks for incremental backups
• File Recovery: Reassemble files from previously split chunks

Technologies Used

• Frontend: React 19, TypeScript, Next.js 15
• ZIP Handling: JSZip for creating and extracting ZIP archives
• File Operations: Browser File API and ArrayBuffer manipulation
• Styling: Tailwind CSS with full dark mode support

Privacy & Security

All file processing happens entirely in your web browser. Your files are never uploaded to any server, ensuring complete privacy and security.

Technical Highlights

Built using the browser's native File API and ArrayBuffer for efficient binary file handling:

• Streaming Reads: Files are read in chunks to handle large files efficiently
• Binary Safe: Works with any file type (documents, images, videos, archives, etc.)
• Memory Efficient: Processes data in chunks rather than loading entire files
• Cross-Browser: Uses standard Web APIs supported by all modern browsers