Can I merge PDF files online for free?

Yes. This Merge PDF tool lets you combine PDF files online for free in your browser. Your documents are not uploaded to any server.

Is there a file size limit?

There is no hard limit, but very large files (over 100 MB total) may cause your browser to slow down or run out of memory. For best results, keep the combined file size under 100 MB.

Can I reorder PDF files before merging?

Yes. You can reorder the PDF files in the list before merging. To reorder individual pages within a single PDF, use our Split PDF tool first to extract specific pages, then merge them in the order you want.

What PDF features are preserved?

Text, images, annotations, and most formatting are preserved during merging. Interactive form fields and JavaScript actions may not carry over in all cases.

Can I merge password-protected PDFs?

No. Password-protected or encrypted PDFs must be unlocked before merging. We plan to add a PDF unlock tool in a future update.

Does merging reduce quality?

No. Merging combines pages without re-encoding content, so text and images remain at their original quality.

Unified Tools Platform

Free tools, no signup

PDF Tools

Merge PDF

Use this free Merge PDF tool to combine PDF files online in your browser, reorder them before processing, and download one merged PDF for reports, contracts, applications, or client handoffs.

Upload PDF filesSelect multiple PDF files to merge. Files stay in this browser session.

0 file(s) selected

Total size: 0 B

Add PDFs to see the merge list here.

Add two or more PDF files to begin.