File4Edit

Merge PDF

Merge two or more PDF files into one, free and in your browser with no upload. Drag the files into order and take whole documents or page ranges; pages are copied, not re-rendered, so text stays selectable and nothing loses quality.

Drag to set the order. Pages are copied without re-encoding, so nothing is lost.

In detail

Merge PDF joins two or more PDFs into a single document, in the order you set by dragging the rows. Pages are copied from one document into another with pdf-lib rather than re-rendered, so text stays selectable, fonts stay embedded, and images keep the exact bytes they arrived with. There is no quality setting because nothing is re-encoded.

Each file can contribute all of its pages or only a range such as 1-3,7, and a range can run backwards, such as 9-5. To reorder or remove individual pages after merging, open the result in Organize PDF pages.

Merge PDF at a glance

Input
Two or more PDFs (password-protected files cannot be opened)
Output
One merged PDF
What it does
  • Merge two or more PDFs
  • Drag-and-drop ordering
  • Page ranges per file, including reversed ranges
  • Pages copied without re-encoding
  • Custom output filename
Who it is for
Anyone combining contracts, scans, invoices or chapters into one file.
Limits
  • At least two files are needed.
  • Bookmarks (the outline) from the source files are not carried over.
  • Password-protected PDFs are refused.
Privacy
Runs entirely in your browser: no PDF is uploaded, and nothing is kept after you close the tab.

How to merge PDF files

  1. Add your PDFs Drop two or more PDFs onto the page. Each lands as a row showing its page count and file size, and you can add more at any time.
  2. Put them in order Drag a row by its grip, or use the up and down buttons. The list runs top to bottom in the finished document.
  3. Trim any document to a page range Leave a row's pages box empty to take the whole document, or type single pages and ranges such as 1-3,7. The row then shows how many of its pages are selected.
  4. Name the output Type the output filename in the rail. The summary tells you how many pages are coming from how many files.
  5. Merge and save Press merge and save. One PDF goes straight to your downloads.

Merge PDF: common questions

Does merging reduce quality or make text into images?

No. pdf-lib copies the page objects from each source into the new document untouched, so nothing is rasterized or re-encoded: text stays selectable and searchable, fonts stay embedded, and images keep their original encoding and resolution.

Can I take pages in reverse order from one of the files?

Yes. A descending range such as 9-5 is accepted and gives you that section reversed, because it is a reasonable thing to ask for. A range that names a page the document does not have is refused with the actual page count instead.

What about password-protected PDFs?

They are refused. A file that is encrypted, or that cannot be parsed as a PDF at all, is named in the message and the merge does not run. Remove the password in the application that produced the file, then add it again.

How many files do I need?

At least two — the merge button stays disabled while only one file is in the list. There is no fixed upper limit beyond what your machine's memory allows.