Merge PDF
Combine multiple PDF files into one — drag to reorder pages
Drop PDF files here
or click to browse · Multiple files supported
Why merge PDF files?
One File to Share
Instead of sending multiple attachments, merge them into one document for clean sharing via email or cloud storage.
Preserve Formatting
pdf-lib preserves fonts, images, vector graphics, hyperlinks, and all original layout — zero quality loss.
Browser-Based
No software to install. No server upload. PDFs never leave your device.
How it works
Upload PDFs
Drop two or more PDF files — encrypted PDFs are loaded with ignoreEncryption mode.
Reorder
Drag files by the grip handle to set the page order in the merged document.
Merge
Click Merge — all pages are copied into a single new PDF using pdf-lib.
Download
Download the merged PDF immediately — no server required.
Who uses this tool?
Business
Combine reports, invoices, and contracts into a single document for email and archiving.
Students
Merge lecture slides, notes, and assignments before submitting or printing.
Legal
Bundle exhibits and supporting documents into a single organized PDF submission.
Photographers
Combine photo pages and cover sheets into a single client delivery PDF.
Frequently Asked Questions
How many PDFs can I merge?
There is no hard limit — merge as many files as you need. Very large merges may be slow on low-end devices.
Are encrypted PDFs supported?
We attempt to load encrypted PDFs with ignoreEncryption mode. If the PDF requires a password for content access, some pages may be blank.
Does the order matter?
Yes — pages appear in the merged document in the order files appear in the list. Drag to reorder before merging.
Does merging compress the PDF?
No — merged output is uncompressed for maximum fidelity. Use a PDF compressor afterwards if file size matters.
About this tool
VisualDocs's PDF merger uses the pdf-lib library to copy all pages from multiple PDFs into a single document — preserving every element, entirely in your browser.