How to Merge PDFs

Combine PDFs quickly and confidently

Merging PDFs is one of the most common document tasks. Whether you're preparing a report, putting together a contract package, or creating a single delivery file for a client, a merged PDF keeps everything together in the right order.

Best practice steps

• Start by collecting the final versions of each document before you merge them.
• Rename files with a meaningful order, like 01-Agenda.pdf, 02-Report.pdf, and 03-Appendix.pdf.
• Use a tool that preserves page order and supports drag-and-drop so you can reorder files visually.

Keep formatting intact

Many PDF merging tools simply concatenate files. Choose one that preserves the original page size and document settings so the merged output looks consistent and prints correctly.

SmashPDF makes it easy to merge PDFs in the browser without uploading sensitive content to a third-party server, so you can stay productive with better privacy.