Merge PDF Files Online Free — No Signup
Combine two or more PDFs into a single document. Free, private, and everything happens in your browser — your files never leave your device.
Drag & drop your PDFs here
or click to browse — files stay on your device
Files never leave your deviceHow to Merge PDF Files in 3 Steps
- Drop two or more PDF files into the box above.
- Use the up and down arrows to arrange them in the order you want.
- Click Merge PDFs — your combined file downloads automatically.
About this free PDF merger
PDFPax's PDF merger combines several PDF files into one document right in your browser. There is nothing to install and nothing to upload: your files never leave your device, which keeps sensitive documents — contracts, reports, medical records — completely private. Add two or more PDFs, rearrange them into the order you want, and merge with one click. The tool joins the pages in exactly the order shown in your list. It handles everyday PDFs without fuss: reports, invoices, scanned pages, contracts, and application documents. Everything runs client-side using the open-source pdf-lib library, so the page keeps working offline once it has loaded and your files never queue on a remote server. Merging is free with no watermarks, no page limits, and no account. Password-protected files can't be opened by browser tools, so remove the password before merging. For very large sets of files, a desktop with decent memory gives the fastest results.
Merge vs Combine vs Join PDF Files
Merge, combine and join all mean the same thing: joining several PDF files into one document. 'Combine' is the word Adobe uses in Acrobat, while 'join' is especially common in the UK — but whichever term you search for, this tool does all three. Pick your files, arrange them in the order you want, and click Merge PDFs. The result is a single PDF containing every page from every file, in your chosen order.
What Order Do Merged PDFs Follow?
The merged file follows your list order, top to bottom — the first file in the list becomes the first pages of the combined PDF, and so on. Arrange your files with the up and down arrows before clicking Merge PDFs, because the order can't be changed after the download. Double-check the list looks right: it's much easier to reorder now than to split and re-merge later.
Can I Merge Scanned PDFs?
Yes. Scanned pages are still PDFs — they're just images of pages instead of selectable text. This tool joins them exactly like any other PDF, so you can combine scanned contracts, receipts or reports alongside regular documents. Everything is preserved as-is: the scans aren't re-rendered or degraded, they're simply joined together in your chosen order. If your scans came out sideways, fix them first with our free Rotate PDF tool.
Merge PDFs Without Adobe Acrobat
No subscription, no install, no uploads. Acrobat can merge PDFs, but it requires a paid plan and sends your files through Adobe's servers. This tool runs entirely in your browser using the open-source pdf-lib library — your files are never uploaded, which keeps sensitive documents private. It works on any device with a modern browser, and the page keeps working offline once it has loaded.
Merge PDF on iPhone and Android
Yes, it works in any modern mobile browser. Open this page on your iPhone or Android phone, pick your PDF files from the file picker, arrange them with the up and down arrows, and tap Merge PDFs. The combined file downloads to your device. For very large sets of files, a desktop with decent memory gives the fastest results, but typical merges work fine on phones.
Common uses: job applications (resume + cover letter + certificates), combining monthly invoices into one file, and merging contracts with their annexures so everything stays together.
Need to break a document apart instead? Split PDF extracts pages or divides a PDF into separate files. Shrink the merged file before sharing it — Compress PDF. Want to rearrange pages after merging? Reorder PDF Pages lets you drag pages into a new order. Merging photos too? Convert them to PDF first with JPG to PDF. Remove unwanted pages before or after merging with Delete Pages.
Frequently asked questions
Can I control the order of the pages in the merged PDF?
Yes. The merged file follows the order of the list on this page, top to bottom. Use the ↑ and ↓ arrows next to each file to rearrange them before clicking Merge PDFs.
What happens with password-protected PDFs?
Password-protected files cannot be opened by browser-based tools. Remove the password from the file first, then merge it here.
Is there a limit on how many PDFs I can merge?
No hard limit. Everything runs in your browser's memory, so very large sets of files — or very large files — may slow down low-end devices. In practice, a dozen typical documents merge in seconds.
Is it really free to merge PDFs?
Yes — no account, no watermarks, no page limits. Everything runs in your browser, so there's nothing to throttle or charge for.
How do I combine multiple PDF files into one document?
Drop two or more PDFs into the box above, use the up and down arrows to arrange them in the order you want, then click Merge PDFs. The combined file downloads automatically, with pages in your list order.
Can I merge images or Word files with my PDFs?
This tool accepts PDF files only. To add images, convert them first with our JPG to PDF tool, then merge the results here.
Will merging change the quality of my PDFs?
No. Pages are joined as-is — text, fonts, images and links are preserved exactly, because the tool copies pages rather than re-rendering them.
Does it work on iPhone and Android?
Yes. Open the page in your phone's browser, pick your PDF files from the file picker, arrange them with the arrows and merge.