Free tool · Documents
Merge PDF
Combine several PDFs into one file, in whatever order you want. Most PDF tools upload your files to their servers before merging them — this one doesn't. Everything happens right in your browser, on your own device, so your files never leave your computer.
How to merge PDF files
- Add your PDFs: drag several files into the box above, or click to browse and add them one at a time.
- Review the file list: check each document's name, file size and page count.
- Arrange the order: drag the files into the sequence you want in the combined PDF.
- Remove unwanted files: use the Remove button on any document you do not want to include.
- Enter passwords if needed: if a PDF is password-protected, enter its password when the tool asks — it is used only on your device.
- Click Merge PDF: the files are combined on your device, in the order shown.
- Download your PDF: save the single combined document.
Why this merger is different
Many online PDF tools ask you to upload your documents to their servers before they can merge them, which means copies of your contracts, tax forms, ID scans or medical records sit on someone else's computer. This tool works the opposite way: your files are opened, combined and saved entirely inside your browser, using your own device's processing power. The documents are never uploaded to us, never stored, and never seen by anyone but you. You can check this yourself: open your browser's Network tab while you merge a file and you will see no upload of your documents.
Good to know before you merge
Whole files only, for now
This version merges each PDF in full. Choosing page ranges inside each file — taking only pages 2 to 4 of one document, for example — is planned for a later version. To merge part of a document today, split it first and merge the piece you need.
Bookmarks, forms and signatures
Merged files keep the pages themselves, sharp and complete. Some document-level extras may not carry into a rebuilt file: the bookmark outline, interactive form structure and attachments can be left behind, and a digital signature does not stay valid once pages are copied into a new document. Keep your original files when those matter.
Very large files and phones
Processing happens on your device, so the practical limit is your device's memory, not a limit we set. A batch of very large or image-heavy PDFs may be slow, or run out of memory, on a phone or an older computer. For a set like that, merge fewer files at a time or use a desktop browser.
Examples
| Documents | Order | You get |
|---|---|---|
| Three contracts of 4, 2 and 6 pages | Contract A, then B, then C | One PDF of 12 pages |
| Two scanned forms of 10 pages each | Form first, ID scan second | One PDF of 20 pages |
| Report of 8 pages plus a 3-page appendix | Report first, appendix second | One PDF of 11 pages |
Three mistakes people make when merging PDFs
Merging in the wrong order
The order in the list is the order in the merged file, and it is baked in once you download. Take ten seconds to drag the files into the right sequence before you merge — it is much easier than splitting the result apart again.
Expecting to choose pages
This version adds each document in full. If you only need a few pages of a long report, split out those pages first, then merge the extracted piece with the rest of your files.
Closing the tab before downloading
Because nothing is uploaded or kept on a server, your merged file exists only in the tab until you download it. Closing the tab first means running the merge again — your original files are never changed either way.
Frequently asked questions
Where do my files go?
They stay on your device. Each PDF is read into your browser's memory and the combined file is written there. Nothing is uploaded to us, and nothing is kept after you close the tab.
Can I change the order of the files?
Yes. Drag any file up or down in the list before merging, and the merged PDF follows that order.
Does the tool merge only whole files?
Yes. In this version each PDF is added in full. Choosing page ranges inside a file is not available yet.
How many files can I merge at once?
There's no fixed number — the real limit is your device's memory, not the file count. Many small PDFs merge fine; very large scanned files on a phone with limited memory may fail, and the page will tell you if it does.
What if one of the PDFs is password-protected?
The page asks for that file's password and opens it on your own device. The password is used only in memory, never stored, never sent.
Privacy and important information
This tool runs entirely in your browser: your PDFs, their names and their contents are never sent to a server, stored, or shared, and no file information is passed to analytics. Merging copies pages as they are — it does not edit, convert or recognize text inside the pages.
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