How to combine PDFs on an iPhone or Android phone
Updated 2026-10-25
Application forms and HR portals often accept one attachment, and the documents you need are three separate PDFs sitting in your phone's Files or Downloads. You do not need an app for this: a modern phone browser can merge PDFs itself.
Step by step
- 1Open Merge PDF in your browserSafari on iPhone and Chrome on Android both work. Tap Select PDF files and choose the documents from Files, Downloads or iCloud Drive.
- 2Set the orderUse the arrows beside each file to move it up or down. The order on screen is the page order in the result.
- 3Merge and saveTap Merge, then Download. On iPhone the file goes to Downloads in the Files app; on Android it goes to your Downloads folder.
Pages in the wrong order inside one file?
Merging keeps each document's pages as they were. If one of them has a page upside down or out of place, fix it afterwards with Organize PDF, which shows every page as a thumbnail you can move, rotate or delete.
Paper documents too
If one of the documents is still on paper, Scan to PDF uses your phone's camera to turn it into a PDF first, and you can then merge it with the rest. Photos you have already taken can be turned into a PDF with JPG to PDF.
Questions
- Do my files get uploaded?
- No. The merge happens inside your phone's browser. You can switch on airplane mode after the page has loaded and it still works.
- Is there a limit on files or size?
- There is no fixed limit. Very large scans can be slow on older phones because all the work is done by the phone itself.
Your file stays on your device the whole time.
Also useful: Organize PDF · Scan to PDF · JPG to PDF