Merge PDF Files

What is PDF Merger?

PDF Merger is a free online tool that allows you to combine multiple PDF documents into a single file. Whether you're organizing work documents, academic papers, or legal files, this tool makes merging PDFs simple and fast without complicated software.

Features

• Merge Multiple PDFs: Combine up to 20 PDF files in one operation
• Drag & Drop Reordering: Easily arrange files in any order using intuitive drag-and-drop interface
• Preserve Quality: Maintains all original content, formatting, and quality during merging
• No File Size Limits: Handle large PDF files (up to 50MB each) without restrictions
• Instant Processing: Fast, browser-based merging with real-time progress tracking
• Privacy Protected: All processing happens locally in your browser - nothing is uploaded
• PDF Preview: Preview merged results before downloading
• No Installation: Works directly in your web browser
• No Registration: Completely free to use, no account needed
• Batch Processing: Merge all files in one operation

How to Use

Step 1: Add PDF Files

• Click the upload area or drag and drop your PDF files onto it
• Select up to 20 PDF documents to merge (maximum 50MB per file)
• Files are processed locally in your browser for complete privacy
• You can add files one at a time or select multiple files together

Step 2: Arrange Files

• Review all uploaded PDFs in a numbered list
• Drag and Drop: Click and drag any PDF to reorder it
• Arrow Buttons: Use up/down arrows for precise positioning
• Remove: Click the trash icon to delete any PDF from the list
• Clear All: Remove all files and start fresh
• Files are merged in the exact order displayed

Step 3: Merge & Download

• Click the "Merge PDFs" button to combine all selected files
• Watch the progress bar as your PDFs are merged
• Preview your merged PDF result
• Click "Download Merged PDF" to save the file to your computer
• Use "Merge Another" to combine additional PDFs without reloading

Perfect For

• Business Documents: Combine reports, invoices, contracts, and receipts into organized files
• Academic Work: Merge lecture notes, assignments, research papers, and study materials
• Legal Documents: Combine contracts, agreements, supporting documents, and legal materials
• Job Applications: Organize application materials, cover letters, and supporting documents
• Presentations: Combine multiple presentation materials and related documentation
• Book Compilation: Merge multiple document chapters into a single book
• File Organization: Consolidate related PDFs into a single master document
• Email Attachments: Create single files instead of multiple email attachments

Technical Details

• Maximum Files: Up to 20 PDFs per merge operation
• File Size: Up to 50MB per individual PDF file
• Output Format: Standard PDF (fully compatible with all readers)
• Processing: Real-time in your browser with progress tracking
• Privacy: No uploads to external servers - all processing is local
• Browser Support: Works on all modern browsers (Chrome, Firefox, Safari, Edge)
• Performance: Fast merging even with large files

Tips for Best Results

• Organize First: Arrange files in the correct order before merging - you can preview the order in the list
• Check File Names: Use descriptive names to identify files during arrangement
• Test with Samples: Start with smaller PDFs to familiarize yourself with the process
• Keep Backups: Always maintain copies of your original PDFs
• Preview Result: Review the merged PDF preview before downloading
• Large Files: If handling very large files (40MB+), be patient during processing
• Batch Operations: Merge up to 20 files at once for efficiency
• Quality Preserved: All original content, formatting, and quality are maintained

Supported Formats

• Input: PDF files (any PDF version)
• Output: PDF (standard format compatible with all readers)
• Maximum per merge: 20 PDF files

File Size & Performance

• Per file limit: 50MB maximum
• Total operation: Can merge files totaling 500MB+ (depending on browser memory)
• Processing speed: Typically 1-5 seconds for standard merges
• No automatic limits: Browser capacity may vary by device

Browser Compatibility

This tool works on all modern browsers:

• Google Chrome/Chromium
• Mozilla Firefox
• Safari (Mac/iOS)
• Microsoft Edge
• Opera

Privacy & Security

• 100% Private: Your PDF files never leave your browser
• No Uploads: All processing happens locally on your device
• No Tracking: We don't track your files or activities
• No Storage: Files are not stored anywhere
• Secure: Uses industry-standard PDF manipulation libraries
• No Account Required: Completely anonymous usage

Credits

• pdf-lib - A JavaScript library for creating and modifying PDF documents

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Privacy Notice: Your PDF files are never uploaded to our servers. All merging happens directly in your browser for complete security and privacy.