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PDF Merger

Combine multiple PDF documents into one organised file, with drag-to-reorder pages.

Private Instant No sign-up No daily limit

Free to use. No account, no daily limit, and no watermark on the result.

 1 · Add your PDF files

No files yet
Drop PDF files here or click to browse — nothing is ever uploaded to a server
Documents
0
Pages to merge
0
Total size
0 B
Output pages
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 2 · Arrange & merge

0 pages

Leave the toggle off to merge whole documents in the order shown above. Switch it on to move, remove or relocate single pages between documents before the files are combined.

Private by design. Your PDFs are parsed and merged locally with the pdf-lib engine in this browser tab. No file is uploaded, stored or transmitted anywhere.
Saves as merged.pdf

 Merge result

Add one or more PDFs above, then press “Merge & Download” to build a single document.

How to merge PDF files online

1

Drop your PDFs into the panel

Click the drop zone and select two or more PDF files, or drag them straight from your desktop.

2

Order the documents

Use the arrow buttons on every row to move a file up or down — the top of the list becomes the start of the merged document.

3

Fine-tune single pages

Switch on “Reorder pages” to list every page of every file, then move, remove or transfer individual pages between documents.

4

Merge and download

Press “Merge & Download” and save the finished file as merged.pdf on your device.

PDF merger — frequently asked questions

Yes. There is no watermark, no file-size counter, no sign-up and no page limit. You can merge as many documents and pages as your device can comfortably handle.

Never. The merging is performed by the pdf-lib JavaScript engine running inside your own browser tab. Your documents are read from your device into memory and are never sent to a server.

Page content, vector graphics and embedded fonts are copied faithfully. Interactive elements such as form fields, annotations and internal bookmarks are not rebuilt by the merge operation, so flatten your forms before merging if you need them to stay editable.

Password-protected PDFs cannot be read by the browser engine, and very large scanned files can exhaust device memory. Remove the password first, or split huge documents into smaller parts and merge the results.

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