How to merge PDF files
- Choose or drop two or more PDF files.
- Use the arrows to put them in the right order.
- Press Merge PDFs. The combined file downloads as merged.pdf.
Tip: Need only some pages from a file? Run it through Split PDF or Remove PDF pages first, then merge.
Common uses
- Combining a job application: cover letter + resume + references.
- Putting scanned receipts or invoices into one file for taxes or expenses.
- Joining chapters, contracts and signed pages before emailing.
Will the quality change?
No. Pages are copied as they are — text stays selectable and images are not re-compressed. The merged file is roughly the size of all files added together. If it is too large to email, use Compress PDF.
Merge PDF Files FAQs
Is there a limit on files or size?
There is no fixed limit. Very large files (hundreds of MB) depend on your device memory; on phones keep the total under about 100 MB.
Are my PDF files uploaded anywhere?
No. The tool runs entirely in your browser using open-source libraries (pdf-lib and PDF.js). Your file is never sent to a server, so it is safe for contracts, bank statements and IDs.
Does it work with password-protected PDFs?
Encrypted PDFs usually cannot be edited. Open the file with its password, use “Print → Save as PDF” to make an unlocked copy, then use the tool.