Files stay on your device
Instant processing
No watermarks added
No sign-up needed
Drag & Drop PDF Files Here
Drop multiple PDFs to combine them into one file
or
📂 Select PDF Files
Drag files in the list above to reorder them before merging.
Merging pages…
PDF Merged Successfully!
Your combined PDF is ready to download.
HOW IT WORKS
Merge PDFs in 3 Simple Steps
1
Upload Your PDFs
Select or drag multiple PDF files. Add as many as you need — there's no limit.
2
Set the Order
Files will be merged in the order shown. Remove any you don't want included.
3
Merge & Download
Click Merge PDF. Your combined file downloads instantly to your device.
FAQ
Merge PDF — Frequently Asked Questions
How many PDF files can I merge at once?▼
There is no hard limit imposed by PDFScanner. You can merge as many PDF files as your device's memory can handle. Most modern computers can comfortably merge 50+ PDFs without any issues.
Will merging PDFs reduce their quality?▼
No. pdf-lib merges files by copying page content streams directly without re-encoding any data. Images, fonts, and formatting are preserved exactly as they appear in the original files.
Can I merge password-protected PDFs?▼
Owner-locked PDFs (where you can open but not edit) can generally be merged. User-password PDFs (where you need a password to open) cannot be merged without first unlocking them using our Unlock PDF tool.
Can I change the order of pages after merging?▼
Yes — use our Organize PDF tool after merging to visually reorder individual pages within the combined document.
Is this merge tool really free with no limits?▼
Yes, completely free. There are no file size limits, no usage caps, no sign-up required, and no watermarks added to your output. PDFScanner runs all processing in your browser at no cost.