Merge PDFs
Select multiple PDF files to merge them into one document
Upload PDF files to merge them
? Frequently Asked Questions
How many PDFs can I merge at once?
You can merge dozens of PDFs. Practical limits depend on total file size and browser memory. For very large projects (100+ files or GB sizes), consider desktop software.
Can I reorder pages before merging?
Yes! Drag-and-drop reordering lets you arrange PDFs in any sequence before merging. Some tools also allow selecting specific pages from each PDF instead of including everything.
Will merging preserve links and bookmarks?
Basic merging preserves internal page links and most formatting. However, bookmarks, table of contents, and some interactive elements may be lost. Advanced tools preserve more features.
Does merging increase file size significantly?
Merged file size equals the sum of individual files (minus minimal overhead). If the combined size is too large, compress the merged PDF afterward to reduce file size.
Can I merge PDFs with different page sizes?
Yes, PDFs with different page dimensions (A4, Letter, custom) can be merged. Each page retains its original size in the merged document, which may look inconsistent when viewed sequentially.
Is my data safe and secure?
Yes, absolutely! This tool runs entirely in your browser. All data processing happens locally on your device - nothing is uploaded to our servers. Your files and data never leave your computer, ensuring complete privacy and security.