Merge PDF
Combine and reorder multiple PDFs into one document without changing page dimensions.
Choose two or more PDFs. The list order will become the merged document order.
Reorder with drag and drop, or use the Up and Down buttons. The merged PDF follows this order exactly.
Digital signatures: merging rewrites the documents and invalidates any existing digital signatures. Some advanced PDF features, forms or annotations may not transfer exactly. Page sizes and rotations are copied without rasterizing.
Limits: 20 files, 25 MB per PDF, 50 MB total, 200 pages per file and 500 pages combined. A single selected file is not merged; add at least one more PDF.
Merge complete
Merge PDFs in the order you choose
Add multiple PDF files, rearrange them before merging, then verify the expected page total. The merger copies PDF pages directly; it does not render or rescale them, so portrait, landscape and custom page sizes stay in their original order and dimensions.
Everything runs in your browser. Files are checked by their PDF signature and parser before merging. Encrypted PDFs and damaged or unsupported structures are rejected. The output is reopened and checked for its page count before it is offered for download.
Merging invalidates digital signatures. The PDF library preserves page content as far as its supported PDF features allow, but interactive forms, annotations or other advanced features can be altered. Keep your originals if those matter.