UTILS.
Private by default
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Merge PDF

Combine several PDF files into one, in the order you choose.

Loads its engine on first use, so there's no offline download — but it still runs privately in your browser, nothing uploaded.

Your files stay on this device

Files are processed in your browser, never uploaded. The site downloads code and assets to run the tools. No accounts or trackers.

Privacy →

Files and signatures stay in this tab. Download your result before closing it.

Try a worked example

Example

Add a two-page report followed by a one-page cover. Select the cover thumbnail and move it to position 1. Create the PDF to download three pages in the order cover, report page 1, report page 2.

Keep in mind

The workspace accepts files totaling up to 200 MB and requires protected PDFs to be unlocked first. Export includes every remaining page in the displayed order; selecting pages alone does not exclude the others.

About this tool

Add PDFs, inspect their pages, and arrange the final order before downloading.

Drag pages to reorder them, or select pages and use Move to position.

Files and signatures stay in this tab. Download your result before closing it.

A real application packet, merged without an upload

Rental, job and visa applications often ask for one PDF with the pages in a set order, but the documents are full of personal details. This example uses three fictional sample files so you can repeat it exactly. Download them, then in the tool above choose Add files and add them in this order:

  1. Rental application: 2 pages, 87,383 bytes
  2. Cover letter: 1 page, 57,039 bytes
  3. Pay summary: 1 page, 59,385 bytes

The workspace shows four page thumbnails: application page 1, application page 2, cover letter, pay summary. The cover letter should come first, so select page 3, set Move to position to 1 and move it. Then choose Create PDF.

In Google Chrome 155, the downloaded result had 4 pages in the order cover letter, application page 1, application page 2, pay summary, and measured 240,621 bytes. That is larger than the three sources combined (203,807 bytes): merging copies each file's pages and embedded fonts rather than recompressing them. If a portal has a size limit, try Compress PDF on the result and check that the text is still readable.

Before you send the file, open it and check every page: merging copies pages as they are and does not redact anything on them. It cannot open password-protected PDFs; unlock those with Unlock PDF first if you know the password. Need to drop or reorder pages later? Use Reorder PDF Pages or Split PDF.

The three source documents are fictional samples made for this example and released under CC0. The figures above describe one browser run; other PDFs or browsers can produce different sizes. Your own files are processed in your browser and are not uploaded to UtilsWorld.

Frequently asked questions

Are my PDFs uploaded anywhere?
No. The files are read and merged entirely in your browser with pdf-lib; nothing is ever sent to a server.
Can I change the order of the files?
Add PDFs, inspect their pages, and arrange the final order before downloading. Drag pages to reorder them, or select pages and use Move to position.

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