Free PDF Merger
Combine multiple PDF documents into a single file. Drag and drop to reorder. Download instantly. All processing happens locally in your browser — 100% private and secure.
Upload PDF Files
Drag & drop files here to combine them
When to Merge PDFs
Common scenarios where combining PDFs is essential
Book Chapters
Combine separate chapter files into a complete book or report. Maintain reading order and page flow.
Document Packets
Combine application forms, ID scans, supporting documents into one submission file.
Email Attachments
Send one merged PDF instead of multiple attachments. Reduces email size and simplifies recipient experience.
Business Proposals
Combine cover letter, proposal, pricing, and portfolio into one professional document.
Reports & Portfolios
Merge monthly reports into quarterly or annual compilations. Combine portfolio pieces.
Document Archival
Consolidate related documents into single archive files for easier storage and retrieval.
How PDF Merging Works
The technology behind combining PDF documents
Upload PDFs
Select multiple PDF files from your device. All files load in your browser.
Arrange Order
Drag and drop to reorder files. The merged PDF follows your arrangement.
Merge
PDFs are combined using pdf-lib. All pages, formatting, and metadata preserved.
Download
Your merged PDF downloads automatically. Open with any PDF reader.
Frequently Asked Questions
Is this PDF merger free?
Yes, 100% free. No limits on file count or size. No registration, no watermarks.
Are my PDFs safe?
Absolutely. Files never leave your device. All merging happens locally in your browser.
How many PDFs can I merge?
No artificial limit. Most computers handle 20-50 PDFs easily. Limited by device memory.
Can I merge password-protected PDFs?
No. Password-protected PDFs cannot be merged without first removing the password.
Will merging reduce quality?
No. Merging preserves all pages, images, text, and formatting exactly as in originals.
Can I reorder PDFs after uploading?
Yes! Drag and drop files to reorder before merging. Final PDF matches your order.