Merge PDF
Files & ImagesCombine several PDFs into one file. Reorder before you merge.
No files
Calculated Result
Add two or more PDFs
Formula: pdf-lib copyPages into one document
About this calculator
Drop two or more PDFs. Drag to change order. Pages are copied into a new document. Encrypted files may fail.
How It Works & Formula
FormulaCopy pages from each PDF into one document (pdf-lib)
pdf-lib copyPages from each source into one PDFDocument, then save.
Frequently Asked Questions
Can I reorder files before merging?
Yes. Drop several PDFs and change their order in the list, then merge.
What about password-protected PDFs?
Encrypted files often fail here. Unlock them first if you already know the password.