Merge PDFs

Combine two or more PDF files into a single document.

The Merge tool combines multiple PDF files into a single PDF, in the order you choose.

How to merge

1. Open Tools › Merge PDFs.
2. Click Add files and select your PDFs.
3. Drag the thumbnails to change the order.
4. Click Merge and save the result.

Reorder pages before merging

Each file in the list represents all of its pages. To merge only some pages from a file, use Extract pages first to create a subset, then merge the subset with the other files.

Tips

• You can merge more than two files at once — there is no limit on the number of inputs.
• The output file size is roughly the sum of the input sizes (compression is not applied during merge — use Compress afterwards to reduce the size).
• Annotations and form fields in the source PDFs are preserved in the merged output.