ZuffSuite
Start free

PDF & documents · Free

Merge PDF Files

Combine reports, forms, and scans into one PDF. See the first page of each document, drag them into order, and merge — the original pages are copied exactly, so text stays searchable.

Drop PDFs to merge

Two or more PDFs · drag to set the order

Files never leave your device

  • Files stay on your device
  • No account or email
  • No watermarks
  • Free, no daily limits

Built with open-source software. Open-source notices

How to use the Merge PDF tool

  1. Step 1

    Add your PDFs

    Add two or more files. Each shows its first page, page count, and size.

  2. Step 2

    Put them in order

    Drag documents into place, or use the move buttons. The merged PDF follows this order exactly.

  3. Step 3

    Merge and download

    The files are combined on your device. Download the merged PDF.

Nothing is re-rendered

Merging copies each page object — text, fonts, vector graphics, and images — into the new file without converting or recompressing anything. Text remains selectable and searchable, and print quality is identical to the originals.

Fillable form fields keep working, with the values already entered; if two documents use the same field name, one is renamed so each keeps its own answer. Bookmarks aren't carried over. Digitally signed PDFs can't be merged without destroying the signature, so the tool won't merge them — send those separately.

Tips for a clean merge

Put a cover page or summary first, and keep related documents together. If the merged file is too large to email, run it through Compress PDF afterwards.

Questions about Merge PDF

Are my files uploaded to a server?

No. This tool runs entirely in your browser: your files are read and converted on your own device and are never sent to ZuffSuite. The page downloads the conversion code it needs, then works on the files locally. Closing or reloading the tab discards everything.

How do I change the order of the PDFs?

Drag a document card to a new position, or focus it and use the move-up and move-down buttons. The numbers on each card show the final order.

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

You can merge up to 20 files, 100 MB in total, and 1,000 pages in the result.

Will the merged PDF keep text searchable?

Yes. Pages are copied, not converted to images, so text, web links, and vector graphics stay exactly as they were.

Can I merge password-protected PDFs?

No. Encrypted PDFs can't be read without the password. Remove the protection first, then merge.

What happens to fillable forms and signatures?

Form fields and their entered values are kept and stay editable. A digitally signed PDF can't be combined with anything without invalidating its signature, so the tool flags it and won't merge it.

Related free tools

All free tools
Compress PDFShrink image-heavy PDFs while text stays sharp.Open tool JPG to PDFCombine photos and scans into one ordered PDF.Open tool PDF to JPGSharp page images at up to 300 DPI, page by page.Open tool

Keep going with ZuffSuite