About This Tool
This PDF merger combines multiple PDF files into a single document. Upload your PDFs, reorder them by dragging, and merge them into one file. All processing happens locally in your browser for complete privacy.
PDF Merger
Upload PDF Files
Click to upload or drag and drop PDFs here
You can upload multiple PDF files at once
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How to Use
- Click the upload area or drag and drop multiple PDF files
- You can upload PDFs one at a time or all at once
- Drag and drop the PDF items to reorder them in your desired sequence
- Click "Merge PDFs" to combine them into a single document
- Download the merged PDF file to your computer
- Click "Clear All" to start over with new files
Common Uses:
- Business Documents: Combine contracts, reports, and invoices into single files
- Academic Papers: Merge research papers, assignments, and supplementary materials
- Legal Documents: Consolidate legal contracts, agreements, and supporting documents
- Presentations: Combine multiple presentation files into one comprehensive document
- E-books & Manuals: Join multiple chapters or sections into complete publications
Frequently Asked Questions
How many PDF files can I merge at once?
There's no strict limit on the number of PDFs you can merge. However, very large files or many files may take longer to process depending on your computer's memory and browser capabilities.
How do I reorder PDFs before merging?
Simply drag and drop the PDF items in the list. Click and hold the grip icon on the left of each item, then drag it up or down to reorder. The merged PDF will follow this order.
Are my PDF files uploaded to a server?
No. All PDF merging happens locally in your browser using PDF-LIB. Your files are never uploaded to our servers or stored anywhere. This ensures complete privacy and security for your sensitive documents.
Will merging PDFs reduce quality or file size?
No. The merged PDF maintains the original quality of all source files. The file size will be approximately the sum of all individual PDF file sizes.
Can I merge password-protected PDFs?
This tool may have limitations with password-protected or encrypted PDF files. For best results, use unencrypted PDF files. If you encounter errors, try removing password protection first.
What happens if one of my PDFs is corrupted?
If a PDF file is corrupted or invalid, you'll see an error message when trying to merge. Remove the problematic file and try again with valid PDF documents.