PDF Merger
Combine multiple PDF files into one professional document
Drop your PDF files here or click to browse
Select multiple PDF files to merge • Max 50MB per file
Fast & Reliable
Powered by PDF-lib for accurate and fast PDF merging with preserved formatting
100% Secure
All processing happens locally in your browser. Files never leave your device
Custom Order
Arrange files in any order before merging with intuitive drag & drop controls
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How It Works
Upload PDFs
Select multiple PDF files from your device
Arrange Order
Reorder files using up/down buttons
Merge
Combine all PDFs into one document
Download
Get your merged PDF document
Pro Tips for Better Merging
File Order Matters
The order of files in the list determines the order in the final merged PDF. Use the up/down buttons to reorder.
Quality Preservation
PDF-lib preserves the original quality and formatting of your documents during merging.
File Size Awareness
Keep an eye on total file size, especially for email attachments (usually 25MB limit).
Valid PDF Files Only
Ensure all files are valid PDF documents. Corrupted or password-protected files may cause errors.
Page Count Tracking
Monitor the total page count to ensure your merged document meets any printing or sharing requirements.
Privacy & Security
All processing happens locally in your browser. Your files are never uploaded to any server.