Merge PDF Online
Combine multiple PDF files into one document
Drop PDFs here or click to upload
Merge PDF Files Online — Combine Multiple PDFs for Free
Merging PDFs lets you combine separate documents into a single unified file. Whether you're joining chapters of a report, combining scanned pages, or assembling a portfolio from multiple sources, our free online PDF merger handles it in seconds — no software to install, no files uploaded to any server.
How to merge PDF files online
Upload two or more PDF files by dragging them onto the upload area or clicking to browse. Once uploaded, the files appear in a list. Drag and drop the items to reorder them before merging. Click Merge PDF and download your combined document. The entire process happens locally in your browser.
Preserve file order with drag and drop
Order matters when combining documents. Our merger lets you reorder files by dragging them up and down in the list before processing. You can also add more files at any point. Each file is displayed with its name and size so you can confirm the correct files are included before merging.
No quality loss — all content preserved
Pages are copied directly from each source PDF into the merged output. Fonts, images, vector graphics, and text are preserved exactly as in the originals. There is no re-encoding or quality degradation. The merged PDF is a valid, standards-compliant file that opens correctly in all PDF readers.
Free plan and Pro plan
Free users can merge up to 5 PDF files in a single operation. Pro users can merge unlimited files with no restrictions. The Pro plan also unlocks file size limits across all PDFUS tools — compress large PDFs, split long documents, and convert files to Word format without limits.
Frequently asked questions
What is the maximum number of files I can merge?
Free users can merge up to 5 files at once. Pro users have no limit. If you need to merge more than 5 files as a free user, you can merge in batches — merge the first 5, then merge the result with the remaining files.
Can I merge PDFs that are password-protected?
Password-protected PDFs cannot be merged. Remove the password first using a PDF editor, then merge the unlocked files.
Will the page numbering update after merging?
The tool copies pages as-is. If your PDFs contain printed page numbers in the footer, those numbers are preserved exactly. The PDF structure updates page count internally.
Can I select specific pages to include from each file?
Currently the merger includes all pages from each uploaded file. To extract specific pages first, use the Split PDF tool to extract the pages you need, then merge those extracted files.