Merge PDF
Combine multiple PDF files into one document.
All processing happens in your browser. Nothing is uploaded.
Select files
or drag and drop PDFs here
Multiple files supported • Drag to reorder
Combine multiple PDF files into one document.
All processing happens in your browser. Nothing is uploaded.
or drag and drop PDFs here
Multiple files supported • Drag to reorder
Click Select files or drop two or more PDFs onto the page. You can add further files afterwards. Only PDF files are accepted. If a file is locked with an open password, a prompt appears on the page so you can unlock it on your device.
Files are joined in the order they appear in the list. Remove any file you added by mistake. To change the sequence, remove a file and add it again in the place you want, or merge first and then use Organize Pages to rearrange the result.
Click Merge PDFs. The combined file downloads as merged.pdf. Open it and check that the pages are in the order you expected before you share or file it away.
Merging runs entirely in your browser with a JavaScript PDF library. The files you drop are read locally; they are never uploaded to AllOnePDF or to any other server. When you close the tab, the working copies in memory are discarded. That makes this a practical way to combine contracts, statements or identity scans without sending them to a conversion service.
No. Processing happens in your browser. Nothing is sent to AllOnePDF or to a processing server.
Yes, if you know the open password. A prompt appears on the page, and the password stays on your device.
Files are merged in the order of the list. Remove a file and add it again to move it, or tidy the result afterwards with Organize Pages.
There is no fixed cap in the tool, but your device’s memory is the practical limit. Start with a smaller batch if a large merge struggles.
No. Pages are copied, not turned into pictures, so sharp text and line art stay sharp.
Yes. Each page keeps its original size in the combined file.