A Practical Guide to Merge PDF

Merging copies every page from each of your source PDFs, in the order you set, into a single new document — useful for combining a cover letter with a resume, stitching scanned pages into one file, or assembling a multi-part report into a single deliverable.

Step-by-step: merging PDFs

1. Upload two or more PDF files.
2. Reorder them by dragging into the sequence you want the final document to follow.
3. Merge to combine them into one file.
4. Download the result.

Order matters — set it before merging

The final page order exactly follows the file order you set before clicking merge; there's no reordering pages after the fact within this tool. If you realize the order is wrong after merging, the fastest fix is to re-run the merge with the files in the correct order, or use Organize PDF afterward to rearrange individual pages within the merged result.

What carries over from each source file

Every page's actual content — text, images, formatting — copies over exactly as it appeared in the source file. Each source PDF keeps its own page size and orientation; merging a mix of portrait and landscape documents doesn't force them into a uniform size, so the combined file can have pages of different dimensions if the sources did.

Troubleshooting

• "The pages came out in the wrong order." Double check the file order in the upload list before merging — it maps directly to the output order.
• "One of my files won't upload." Confirm it's a genuine PDF and not a renamed file of another type — a corrupted PDF may need to run through Repair PDF first.
• "The merged file is very large." Its size is roughly the sum of the source files. If you need it smaller, run the result through Compress PDF afterward.

Ready to combine your files? Open the free Merge PDF tool.