Is there a limit on how many PDFs I can merge?

The browser-based tool can handle dozens of files. The practical limit depends on total file size and your device memory. For very large merges (100+ files), a desktop tool may be more reliable.

Does merging preserve hyperlinks?

Internal links within each document are preserved. Cross-document links may break since page numbers change. External URLs remain functional.

Can I merge PDFs with different orientations?

Yes. Each page retains its original orientation (portrait or landscape). The merged document can contain both.

Are my files secure during merging?

Yes. The tool processes everything in your browser. No files are uploaded to any server. Your documents never leave your device.

How to Merge PDF Files Online (2026)

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