Merge PDF files into one
Choose two or more PDFs, put them in order and download a single document. The whole job runs inside your browser, so your files never leave your computer or phone.
Merge PDF
or drop them here. Files stay on this device.
- Runs on your deviceNo upload. Files stay in your browser.
- Free, no accountNo sign-up, no watermark, no page limit set by us.
- FormatsPDF in, PDF out
- Works onCurrent Chrome, Edge, Firefox and Safari, desktop and mobile.
How it works
- Choose or drop two or more PDF files.
- Put them in the order you want: drag a file by its row, or focus it, press Space, move it with the arrow keys and press Space again; or use ↑ and ↓.
- Press Merge PDFs and download the combined file.
Questions
Does merging keep bookmarks, links and form fields?
Yes. Pages, their content, rotations and annotations, links included, are copied, and each link still goes to its page in the merged PDF. Each file's bookmarks come along in the files' order, each pointing to its page in the merged PDF; a bookmark that opens a web address keeps it, one that runs a script or opens another file stays as a heading without it. Form fields keep their answers and stay a form you can fill in; a field whose name an earlier file's field already has is renamed with _2 (then _3 and on), so each answer stays its own field's.
Can I continue editing the result?
Open Use in another tool beside the downloaded PDF to send a result up to 64 MB directly to page organization, splitting, compression, signing, forms, conversion or encryption. Both tabs remain on this site and the bytes stay in memory; the file is not uploaded or stored.
Is my file uploaded?
No. The page loads a PDF engine into your browser and every operation runs on your device. You can check this yourself in the browser's network panel: after the page has loaded there are no upload requests. Closing the tab discards the file.
Do I need an account or to pay?
No. These basic tools are free, have no page or file limits set by us, and never add a watermark. The practical limit is your device's memory.
What about password-protected PDFs?
Encrypted PDFs cannot be processed here. Remove the password first, then use this tool.
What does this page keep in my browser?
Nothing you open or type. While the tab is open, the tool pages keep a short list of the steps taken in it, in the tab's session storage: the step (page opened, started, succeeded, first success, used again or failed), the tool's name, the time, how many files were used and, for a failure, an error code; never a file name, the contents of a file or your text. It holds at most the latest 200 steps, and the browser deletes it when the tab closes. The page never sends it. Where a Report a problem button is shown, you can attach the last 20 steps to your report; nothing is attached unless you tick that box. In local storage the page keeps only choices you made: a Light or Dark theme until you choose System again, the language you picked with the EN / 中文 switch if it differs from your browser's language, and this tool in your recently used list if you switched that list on at the tools page.
Questions or problems
Found a problem or missing feature? Tell us. Please describe the steps; do not send confidential documents.