How many PDFs can I merge at once?

Free merges cover two PDFs. Pro unlocks larger merge sets with three to five PDFs.

Can I change the merge order?

Yes. The visible file list defines the merge order, so you can move files before running the merge.

Does merge PDF run on the server?

Yes. The client submits the files, and the merge itself runs on the server before the final PDF is returned.

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Merge PDF Online

Merge multiple PDF files online and download one combined PDF in the order you choose.

Upload multiple PDF files

Keep or reorder the merge order

Download one combined PDF

Merge PDF

Output

Choose a file to see the result state here.

Waiting

Processed output appears here

Choose the PDF file set and run the tool. The server will return the finished output here.

Source files

Merged PDF

When to use this merge PDF tool

Use this page when several PDF files belong in one combined document, such as invoices, scans, reports, appendices, or signed pages that need to live in a single file.

Combine two PDFs for free
Unlock Pro for larger merge sets
Keep the merge order obvious before processing
Download one merged PDF result

What the merge order means

The tool merges the uploaded files in the order shown in the file list. If you move the files up or down before processing, the server uses that new order for the final PDF.

Next steps after merging PDFs

After combining PDFs, continue with the closest page-control tasks if the merged document still needs splitting, reordering, or numbering.

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Split PDF Online

Split one PDF into several smaller PDF files by pages per file or custom groups.

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Reorder PDF Pages Online

Change the order of pages in one PDF and download the updated file.

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Add Page Numbers to PDF Online

Add page numbers to one PDF and download the numbered result.

How to Merge PDF Files Online

1
Upload the PDF files
Choose two or more PDF files so the merge flow has a clear input order to work from.
2
Review the order
Move files up or down if needed. The final merged document follows that visible order.
3
Run the merge and download
The server combines the uploaded PDFs into one file and returns the finished output.

Merge PDF FAQ

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Browse all PDF tools

Jump back to the PDF tools section on the homepage to move between merge, split, extract, rotate, watermark, and page-edit workflows.