Merge PDF Files
Combine several PDF files into one document, in the order you choose.
Select PDF filesor drop them anywhere on this page, or paste
Opens in your browser. Nothing is uploaded.
Merge PDF Files, free and private
Merge PDF combines two or more PDF files into one document, in the order you set. Put a cover letter in front of a CV, join a month of scanned invoices, or send one report instead of five attachments.
The merge runs in your browser. Your files are read on your device, their pages are copied into a new PDF, and you download the result. Nothing is uploaded, and there is no account, watermark or page cap.
How to merge PDF files
- 1
Add your PDF files
Press Select PDF files or drop two or more PDFs on the page. Use + Add more to bring in extra files. The header shows how many files and pages you have.
- 2
Set the order
Each file shows as a numbered thumbnail. Use the ‹ and › buttons to move a file earlier or later. The number on each file is its place in the merged PDF.
- 3
Merge the files
Press Merge PDFs. Every page of every file is copied, in order, into one document. Most merges take a few seconds.
- 4
Check and download
Press Preview to open the result in your browser's PDF viewer, then Download PDF to save it. The file is called merged.pdf unless you type another name under File name. The result screen shows the page count and file size.
Why use PDFToolz for this
A bookmark for each file
The merged PDF gets one bookmark per file, named after the file and pointing at its first page. Bookmarks already in a file are kept and nested under it, so a long bundle is easy to move around in. Turn off Bookmark per file to keep only the files' own bookmarks.
Files stay on your device
The merge uses JavaScript in your browser. Your PDFs are never sent anywhere, so there is no server copy of a contract or medical record to leak.
Pages are copied, not re-rendered
Each page moves across as its original objects. Text stays selectable, fonts stay sharp and images keep their resolution.
Mixed page sizes stay as they are
Every page keeps its own size and orientation. An A4 letter, a US Letter form and a landscape table can sit in one PDF without being squashed.
No file or page limit
Merge two files or two dozen. The only limit is your device's memory, which handles reports of several hundred pages.
How to merge PDF files in the right order
Merge PDF works on whole files. It copies every page of each PDF, and you choose the order of the files, not of single pages. A few steps before you merge can save a second pass.
- Need only part of a file? Save the pages you want with Extract PDF Pages, or drop pages with Delete PDF Pages, before you merge.
- Need pages from different files mixed together? Merge first, then move pages into place with Delete / Reorder.
- Files that block printing or copying can be merged as they are. A file that needs a password to open must go through Unlock PDF first.
- Fill in forms with Fill PDF Form before you merge. Form fields may stop working in the merged file.
What the merged PDF keeps
Everything visible on the page comes across unchanged: text, fonts, vector graphics, images and page sizes. Since pages are copied, the merged file is about the size of all the inputs added together.
Links on the pages keep working. Each file gets a bookmark with its file name, and its own bookmarks sit under it. The title and author fields start empty, and you can set them with PDF Metadata.
After you combine PDFs
Add Page Numbers stamps one running sequence across the whole bundle, which helps once pages from several files sit together. For legal productions, Bates Numbering adds a prefix and a zero-padded number to every page.
If the merged file is too big to email, run it through Compress PDF. If the page sizes are mixed and you want them all the same for printing, Resize PDF Pages can set every page to A4, Letter or another size.
Frequently asked questions
Add your PDFs, set the order with the ‹ and › buttons and press Merge PDFs. PDFToolz is free with no account, watermark or page cap.
No. The merge happens on your device and your files are never sent to a server.
Add all the files, then use the ‹ and › buttons under each thumbnail to move them. The number on each file is its position in the merged PDF.
No. Merge PDF orders whole files. To move or remove single pages, open the merged PDF in Delete / Reorder afterwards.
No. Pages are copied as they are, so text, graphics and images keep their quality. If you need a smaller file afterwards, use Compress PDF.
Yes. Each file gets a bookmark with its file name, and the bookmarks it already had are nested under it, pointing at the same pages in the merged PDF.
At least two, with no fixed upper limit. Your device's memory is the only cap.
Last reviewed . See how we build and test our tools, or report an error.
