Combine two or more PDF files into a single document, in the order you choose. Fast, free, and built for simple browser-based workflows.
Choose two or more PDF files, put them in the order you want, then click Merge PDFs.
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PDF Merge is a free online tool that joins two or more PDF files into a single document. Add the files, move them into the order you want, give the finished file a name, and download one merged PDF. There is no account to make, nothing to install and no upload to wait for.
It earns its keep when one document arrives in pieces: a scanned contract whose signature page came back on its own, a month of invoices an accountant wants as a single attachment, chapters exported one at a time from a design program, or a visa application whose checklist says one file only. Setting the order first means the signature page lands after the contract instead of wherever the file picker happened to drop it. Merging first also means the person at the other end opens one attachment instead of five, in the order you meant. A file that cannot be read, usually an encrypted one, is named and skipped rather than quietly losing the whole batch.
Every page is copied and rewritten by your own browser, so the contracts, bank statements and medical forms you feed it are read on your own machine and never reach this site. If the combined file ends up too heavy to email, the PDF Compress tool will bring the size down, and PDF Split does the opposite job when a few pages need to come back out of a bundle. The PDF library is fetched from a public CDN the first time you merge, so this page does need a connection to work.
Click Choose PDF Files and pick two or more PDFs. You can pick them in several goes: each new selection is added to the Merge Order list rather than replacing what is already there.
In the Merge Order list, use the up and down arrows to move each file into the position you want. The red X removes a file you picked by mistake.
Type a name in the Output File Name box. It starts as merged.pdf; change it to something you will recognise later in your downloads folder.
Click Merge PDFs. The result line reports how many files were merged, the total page count and the size, and names anything it had to skip. Click Download Merged PDF to save it, or Clear to empty the list and start again.
Yes! All our tools are 100% free to use with no hidden costs, no registration required, and no credit card needed.
Absolutely. All tools run entirely in your browser (client-side). Your data never leaves your device and is not sent to our servers.
Yes! All our tools are free for both personal and commercial use.
There is no fixed limit. Two is the minimum, and the practical ceiling is your device's memory, because every page is held in the browser while the new document is assembled. Dozens of ordinary text PDFs are comfortable; a stack of large scans is what slows an older phone down.
Yes, and that is what the Merge Order list is for. Every file has up and down arrows that move it through the sequence, so a signature page can follow the contract instead of sitting wherever the file picker put it. The red X drops a file entirely.
No. Pages are copied from the source files rather than redrawn, so text stays selectable, images keep their original resolution and each page keeps its own dimensions. Mixing A4 and US Letter originals is fine: the merged document simply contains pages of both sizes.
A file is skipped when the browser cannot use it: it is password protected in any way (even with only a restriction password), it was truncated while downloading, or it is not really a PDF despite the file name. The result line names each skipped file so the rest of the batch still merges.
Not directly. Any password protection, even a restriction password that lets the file open normally, encrypts the page contents, and merging here would copy those pages out blank. So a protected file is skipped by name with a note, and the rest of the batch still merges. If you know the password, save an unlocked copy with the PDF Password Helper tool and merge that copy; its pages are rebuilt as images, so their text is no longer selectable.
Page content comes across exactly: text, fonts, images and links drawn on the page. Document-level extras do not all survive, so an outline of bookmarks is not carried over and interactive form fields can stop responding. If a form matters, fill it in and flatten it before merging.
No server limit exists, because nothing is uploaded. The real constraint is memory: the browser holds every source file and the finished document at the same time, so several hundred megabytes of scans may fail on a phone yet succeed on a desktop. Merging in two passes helps.
Not directly, because this tool reads PDF files only. Turn pictures into a PDF first with the Image to PDF tool, then merge that result with the rest. Word documents need exporting as PDF from the program that produced them before they can join the merge.