Merge PDF
Add your PDFs, put them in the order you want, get one file back. It happens on your device, so the documents never leave it.
Files never leave this device · works offline
Drop Merge PDF files here
or drop them anywhere here · or paste from clipboard
No upload caps · No sign-up · No watermarks
Processing locally · 0 bytes sentHow to verify this →
Why this matters more for PDFs than for photos
The documents people merge are rarely holiday snaps. They are signed contracts, scanned passports, medical letters, bank statements, tenancy agreements, invoices with a client name on every page. Every other tool that offers to combine them asks you to upload them to a server first, and almost none will tell you what happens to them after that.
There is no server here. The merge runs inside this tab using your own processor, and the finished document is assembled in memory and handed straight to your downloads. You can check that in under a minute: open your browser network tools and watch nothing happen, or disconnect from the internet entirely and merge anyway.
Bookmarks are lost, and we would rather say so
If your source files have a bookmark sidebar, an outline of chapters or sections, that outline does not survive the merge. Page content, text, links and annotations all do. The outline lives at the document level rather than on the pages, and the library this tool uses has no way to rebuild it.
We could have shipped a keep bookmarks switch that did nothing whichever way you set it. Plenty of tools do exactly that. An honest sentence seemed better than a switch implying a choice you do not actually have.
Password-protected files are refused, not mangled
A PDF with a password on it cannot be read without that password, and there is no clever way around that. Rather than opening it anyway and producing a document with blank or garbled pages, which some tools will happily do, this tells you the file is protected and leaves it out.
Remove the password in whatever you normally open it with, then try again. Everything else still merges. One locked file does not cost you the rest of the batch.
What is kept and what is not
| Part of the document | What happens to it |
|---|---|
| Page content and layout | Kept exactly. Pages are copied, not re-rendered |
| Text, and its selectability | Kept. Nothing is flattened into an image |
| Links and annotations | Kept |
| Form fields | Kept, though two forms sharing field names can collide |
| Bookmarks and outlines | Lost. See below, because we would rather say so |
| Page order | Exactly the order you arrange the files in |
What people use this for
- Combining a scanned contract that arrived as one file per page
- Putting a covering letter, a CV and a portfolio into a single attachment
- Merging receipts for an expense claim that insists on one document
- Assembling application paperwork where the portal accepts exactly one upload
- Joining a page you signed on your phone back onto the original
Frequently asked questions
Are my PDFs uploaded anywhere?
No. The merge runs in your browser using your own device, and no part of any file is sent over the network. You can verify it: open developer tools, switch to the Network tab, and merge something. Nothing carrying your documents appears, because there is no request to make. Disconnecting from the internet and merging anyway is the simpler test.
Is there a limit on how many files or pages?
No built-in limit. No page cap, no daily quota, no account. The practical limit is your device memory, because merging means holding the documents and the result at the same time. A few hundred pages is comfortable on a laptop. Nothing is throttled to push you towards paying.
Will the text still be selectable and searchable?
Yes. Pages are copied as pages rather than rasterised into images, so text stays text and remains selectable, searchable, and readable by a screen reader. This is the difference between merging and printing to PDF, and it matters if anyone needs to find a clause later.
What about bookmarks and the outline sidebar?
Those are lost. Page content, text, links, annotations and form fields all survive; the outline tree does not, because it lives at the document level and the library used here cannot rebuild it. If the sidebar matters more to you than the merge, keep the files separate.
Can I merge a password-protected PDF?
Not while it is protected. Remove the password using whatever you open it with, then merge. The file is reported as protected and skipped, rather than being opened anyway and turned into blank pages, which is what happens when a tool ignores the encryption.
Does it work offline?
Yes. After your first visit the tool is cached on your device and will open and run with no connection at all. That follows directly from nothing being uploaded. There is no server for it to need.
Nothing is uploaded — and you can check
Conversion happens on your own device, inside this browser tab. There is no server to receive your files, which is a stronger guarantee than a promise not to look at them. Open your browser's developer tools, switch to the Network tab, and convert something: you will see no request carrying your image. The page keeps working with your network disconnected.