Combine PDFs - drag to reorder, rotate, filter pages, export.
📄Drop PDFs here or click to browse.pdf only · drag tiles below to reorder
About this tool
How do I merge multiple PDFs?
Drop two or more PDF files into the tool, drag to reorder them if needed, then click Merge. The combined PDF downloads to your machine.
Are my PDFs uploaded?
No. Merging runs in your browser using pdf-lib. Your files stay on your machine.
Is there a file count or size limit?
No enforced limit. Very large files (100 MB+) may be slow in older browsers due to memory constraints.
Does it preserve bookmarks and links?
Internal bookmarks and hyperlinks are preserved. Cross-document internal links (linking from one PDF to an anchor in another) will not resolve in the merged output.