Can I reorder pages before merging?

Yes — use the up/down arrows next to each file thumbnail to change the merge order.

Does merging change my PDF quality?

No. Merging copies pages exactly as they are, without re-rendering text or images.

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Merge PDF

Combine multiple PDFs into one. See thumbnails and reorder before merging.

Private In your browser No upload

Drag & drop, or click to upload

Drop two or more PDFs

Frequently Asked Questions

There is no artificial limit. Most browsers comfortably merge 20–50 PDFs at a time, depending on file size.

How to merge PDFs online

Drop two or more PDF files above, reorder them with the arrow buttons, then click Merge. Your combined document downloads instantly — no upload, no email, no waiting.

Privacy you can verify

Open your browser's network tab while merging — you'll see zero outbound requests carrying your PDF. All copying is done with pdf-lib running entirely inside your tab.