Merging multiple PDFs into a single file is one of the most common document tasks. Whether you're combining invoices, reports, or form submissions, the right tool makes it effortless.
Method 1: Free Online PDF Merger (Fastest)
Our online PDF merger lets you drag and drop multiple files, reorder them, and combine them in seconds — without uploading anything to a server.
Method 2: Using Python (pypdf)
from pypdf import PdfMerger
merger = PdfMerger()
for pdf in ["file1.pdf", "file2.pdf"]:
merger.append(pdf)
merger.write("merged.pdf")Method 3: Mac Preview
Open a PDF in Preview, open the sidebar (View → Thumbnails), drag pages from another PDF's thumbnail view into the sidebar, then export as PDF.