Merge PDF files
Drop your files, order them, get one PDF.
Your files never leave your deviceDrop your files here
PDF, images (JPG, PNG, WEBP), Word, Excel, PowerPoint, LibreOffice or Markdown
How to merge PDFs, step by step
Merging combines several files — PDFs, images or Office documents — into a single PDF, in the order you choose. Everything is computed in your own browser.
Drop in your files
Drag every file you want to combine onto the drop area, or click to browse for them: PDFs, JPG, PNG or WEBP images, Word, Excel or PowerPoint documents. Each file appears in a list, with a thumbnail, its size and its page count.
Order the list
Sorting defaults to “Manual”: use the up and down arrows on each row to place the files where you want. The “By name” and “By date” options sort the whole list automatically.
Add or remove a file
The drop area stays active so you can add more files at any time. The bin icon on each row removes that file before you start the merge.
Adjust page by page if needed
The “By page” view shows a thumbnail for every page of every file. Drag a thumbnail, or use its arrows, to place it wherever you want, even between the pages of another file; the circular arrow turns it a quarter turn, the bin removes it from the final document, and clicking a removed page puts it back. The “+ Blank page” button adds an empty page to place wherever you like.
Click “Merge N documents” or “Merge N pages”
In the “By file” view, the button only appears once there are two files or more, and its count updates live; in the “By page” view, it shows the number of pages kept. VellumPDF turns images and Office documents into PDF pages, then combines every page, in the list’s order, into a single document ready to download.
In the “By file” view, the merge button only appears once there are two files. In the “By page” view, a single file is enough as soon as one of its pages has been removed, rotated or moved: the tool then also tidies up a single document.
Frequently asked questions
How do I merge multiple PDFs for free, with no size limit?
Drop your documents into VellumPDF, put them in order with the list arrows, and get a single PDF. The assembly is done by your own device, which is why there is no size limit or file-count cap.
Can I choose the order of the files before merging them?
Yes, each added document can be moved up or down the list with its arrows before export; the final PDF follows exactly that order.
Are my files sent to a server while merging?
No. The merge happens entirely in your browser, with no upload, no queue, and no account required.
What if one of the PDFs is password-protected?
A PDF that only carries a usage restriction (printing or copying blocked) is unlocked automatically, on your device, when you merge. A PDF that needs a password to open is flagged on its row as soon as you drop it: unlock it first with the “Unlock PDF” tool and your password, then run the merge again.
Are the source documents’ metadata and bookmarks kept?
No, only the page content is carried over. The merged document inherits neither title, nor author, nor bookmarks from the source files. If the result is to be archived, fill in the metadata and rebuild an outline afterwards.
Can a file be taken out of the list before merging?
Yes, each document in the list is removed with a click as long as the merge has not started, and the order stays editable to the last moment. It is the displayed order that makes the final document, not the order you added them in.
How does sorting work before merging?
Three modes: “Manual” keeps the drop order, adjustable with the up/down arrows (the default behavior, unchanged). “By name” applies a natural sort, where “page2.pdf” correctly comes before “page10.pdf”, unlike a strict alphabetical sort. “By date” uses each file’s last-modified date. Switching modes reorders the list immediately; any file added afterward is inserted according to that same sort.
Can I merge images, Word or Excel files with PDFs?
Yes. The merge accepts, in the same list, PDFs, JPG, PNG or WEBP images, and Word, Excel or PowerPoint documents in the current format (.docx, .xlsx, .pptx). Each image takes up one A4 page, portrait or landscape to match its orientation; each Office document is converted into PDF pages on your device. The older .doc, .xls and .ppt formats cannot be converted in a browser: they appear in the list with instructions for saving them again as .docx, .xlsx or .pptx. LibreOffice files (.odt, .ods, .odp) and Markdown (.md) are accepted the same way.
Can I see, rotate or remove pages before merging?
Yes. The “By page” view shows a thumbnail of every page of every file, images and Office documents included. Each page can be moved, even between the pages of another file, turned a quarter turn or removed from the final document; the counter above the thumbnails shows how many pages the document will have.