What this does
On iPhone, tap "Choose files" and pick the PDFs from the Files app (On My iPhone, iCloud Drive, Downloads). Put them in order and save one PDF.
Files from WhatsApp or Mail: save them to Files first ("Save to Files"), then pick them here.
Tips
- Long-press in the file picker to select several files at once.
- The joined PDF is saved to Downloads in the Files app.
How to use it
- Add two or more PDFs
- Drag them into the right order
- Download one merged PDF
Questions people ask
Do I need an app to merge PDFs on iPhone?
No. It works in Safari. You can add PDFtoOne to your home screen for one-tap access.
Is there a limit on files?
No fixed limit. Very large sets depend on your device memory.
Will bookmarks and links survive?
Pages, text and images are kept exactly. Some interactive form fields may become plain content.
Is Merge PDF really free?
Yes. Every PDFtoOne tool is free with no login, no daily limit and no watermark. The site is supported by ads.
Is there a file size limit?
We set no limit. Files are processed by your own device, so the only limit is its memory. Computers handle very large files; phones handle most everyday files easily.
Does it work offline?
Yes. Once you have used a tool, it keeps working without internet. You can also install PDFtoOne as an app.