Original quality
Pages are copied as PDF objects. Text stays selectable, and images are not recompressed or converted to pictures.
Free online tool
Merge PDF Files Online
Combine multiple PDFs into one document in your browser. Keep the original quality, set the file order, and download a single PDF — no account and no install.
PDF workbench
Up to 20 files · 25 MB each · 80 MB total
Uploading files…
Your PDF is ready
Files stay on the server only long enough to merge them. They are deleted after download or within 10 minutes.
How to merge PDF files
-
1
Add your PDFs
Drop files onto the workbench or choose them from your device. You can add more files at any time before you merge.
-
2
Arrange the order
Drag a file, or use the up and down buttons, so the documents appear in the sequence you want in the final PDF.
-
3
Merge and download
Select Merge PDF. When processing finishes, download the combined file. Temporary copies are removed after download or within a few minutes.
Why people use PDF Merger
You control the order
Arrange cover letters, contracts, scans, and appendices before you merge so the final file reads in the right sequence.
Private by design
There is no account. Uploads are isolated per job and removed automatically. We do not read your document contents for advertising.
Works on any device
Use it on Windows, macOS, Linux, or a phone. The layout adapts, and you never install a desktop app.
What happens to your files
Each merge runs on the server that hosts this site. Source files and the result live in a temporary folder. When you download the merged PDF, the server copy is deleted. Anything left behind is removed on a short timer.
Do not upload documents you are not allowed to process. Password-protected PDFs are rejected so the tool never asks you to share a password.
Frequently asked questions
Is PDF Merger free to use?
Yes. You can merge PDF files in the browser without creating an account. File-size and file-count limits keep the service reliable on shared servers.
Are my PDF files stored or shared?
Files are used only to produce the merged document. They sit in a private temporary folder on the server and are deleted after you download the result, or automatically within about 10 minutes.
How many PDFs can I merge at once?
You can merge up to 20 PDF files in one job. Each file can be up to 25 MB, and the combined upload must stay within 80 MB.
Can I change the order of files?
Yes. Reorder files with drag and drop or the arrow buttons. The merged PDF follows the list from top to bottom.
Will merging reduce PDF quality?
No. Pages are copied as PDF objects. Text, vector graphics, and existing image resolution stay the same. We do not recompress or rasterize pages.
Why did my merge fail?
Typical causes are password-protected files, a file that is not a valid PDF, or a file that exceeds the size limits. Remove the problem file and try again.
Does it work on phones and tablets?
Yes. The layout is responsive. On small screens, use the arrow buttons to reorder files if dragging is awkward.
Do I need to install software?
No. PDF Merger runs in the browser. Upload, merge, and download — nothing is installed on your device.
A practical way to combine PDF documents
Teams still receive contracts, invoices, lab reports, and scan packets as separate PDFs. Emailing five attachments is clumsy, and printing them to a new printer queue often flattens text into images. Merging keeps a single file that you can archive, e-sign, or attach to a ticket.
PDF Merger is built for that job and nothing else. You add files, set the order, and download one document. Because pages are imported rather than redrawn, bookmarks that exist inside a file stay with that file’s pages, and fonts already embedded in the source PDFs travel with them.
When merging is the right step
Use a merge when the documents already look the way you want. Combine a signed cover sheet with a statement of work. Attach appendix PDFs after a proposal. Join scanned receipts into one expense file. If you need to rotate a page or delete a blank sheet, do that in an editor first, then merge the cleaned files here.
Order matters
The list on the workbench is the table of contents of the result. Put policy documents before forms, and put exhibits after the agreement they support. File names are labels only; they do not change the sequence. If you added files in the wrong order, move them before you click Merge PDF.
What this tool does not do
PDF Merger does not unlock encrypted files, does not convert Word or images to PDF, and does not compress the result. Those extra steps belong in other tools. Keeping this site focused makes the merge path faster and easier to trust.