How-to
How to merge PDF files without Acrobat
How to merge PDF files into one on Windows, Mac and a phone without Acrobat. And what to fix when the result is in the wrong order, has locked files in it, or is too big for the portal.
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Merge PDF
Join several PDFs into a single file, in whatever order you choose. The files never leave this browser.
No upload
Drop the PDFs you want to merge
Pick several at once. You can reorder them in the list below.
How to merge PDFs
- 1
Pick every PDF you want
Drag them in or use the button. Choose several at once, and add more later if you need to.
- 2
Set the order
Drag a row by its handle to move it. They join in exactly the order shown.
- 3
Press merge
It finishes in a few seconds and the result page opens. Press Download to save the merged file.
Worth knowing before you merge
Mixed page sizes are fine
If you merge an A4 document with a scanned receipt, each page keeps its original size in the result. Nothing is forced to a single format, so no original gets cropped or stretched.
If you want one consistent size when printing, the "fit to page" option in the print dialog is the safer way to get it.
Password-protected PDFs have to be unlocked first
A file with an open password cannot be read, so it is left out of the merge. It is flagged in red in the list. Either remove that file or unlock it and add it again.
Your originals are untouched
Merging creates a new file. The originals you selected are not modified in any way, so if the result is not what you wanted, change the order and make it again.
Common questions
Is my file uploaded to a server?+
No. The code that reads and joins the PDFs runs inside your browser. Merge a file with your browser’s network tab open and you will see there is no upload request the size of your document.
How many files can I merge?+
There is no set limit. The real limit is your device’s memory. A computer handles dozens of files and hundreds of megabytes without trouble; on a phone, several large files can freeze the tab, so a warning appears first.
Do I need an account or a payment?+
Neither, and there is no daily usage cap. Nothing is processed on our servers, so extra use costs us nothing.
I merged them in the wrong order.+
The list is still there. Drag the rows into the right order and press merge again. You do not need to re-select the files.
Does it work without internet?+
Yes, once the page has loaded. Processing needs no connection, so it behaves the same on a restricted office network or on a plane.
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