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Merge PDF

Combine several PDF files into one document in the order you choose.

Your files never leave your device.

When to use it

Merge PDF is for any time several PDF files belong together: a cover letter and CV for a job application, monthly invoices for your accountant, scanned pages that came out as separate files, or chapters of a report written by different people. Sending one tidy document is easier for the person receiving it, and many upload forms accept only a single file.

How to merge PDF files

  1. Tap Choose PDF files, or drag your PDFs onto the box. You can select several at once.
  2. Check the list. Each file shows its number of pages and its size, and the total page count appears above the list.
  3. Put the files in order. The files are joined from top to bottom: use the arrow buttons, or drag them on a computer.
  4. Need another document? Press Add more.
  5. Press Merge PDFs, then Download to save the combined file.
  6. Press Start over to merge a new set.

A worked example

You are applying for a job and the form asks for one PDF. You have three files: “cover-letter.pdf” (1 page), “cv.pdf” (2 pages) and “certificate.pdf” (1 page, a scan). Add all three, move the cover letter to the top, the CV second and the certificate last, then press Merge PDFs. You get one 4-page PDF in that exact order. If the scanned certificate makes the file too big for the form, run the result through Compress PDF.

Tips

  • Name files with numbers first, such as “01 cover.pdf” and “02 report.pdf”. They’re easier to put in order, and you can check the sequence at a glance.
  • Check the page count in the list before merging. A file showing far fewer pages than expected may be the wrong version.
  • Mixed page sizes are fine. A4 and US Letter pages, or portrait and landscape pages, keep their own size in the merged file.
  • Photos or scans as JPG? Turn them into a PDF with Image to PDF first, then merge.

Common mistakes

  • Forgetting the order. Files are merged in list order, not the order you opened them in. Look at the list once more before pressing the button.
  • Merging locked files. Password-protected PDFs are marked in the list and can’t be merged until they’re unlocked.
  • Emailing a huge result. Scanned documents add up quickly. If the merged file is over about 10 MB, compress it before sending.
  • Expecting edits. Merging joins documents; it doesn’t change the text on the pages.

Your files stay with you

The files are combined inside your browser. Nothing is uploaded, which matters for contracts, medical letters and anything else confidential.

Shrink the result with Compress PDF, take a document apart with Split PDF, or turn photos into pages with Image to PDF.

Frequently asked questions

Is there a limit on how many PDFs I can merge?

There is no fixed number. Each file can be up to 200 MB, and the practical limit is your device's memory. A typical laptop handles dozens of documents or several hundred pages without trouble.

Will merging reduce the quality of my pages?

No. Pages are copied exactly as they are, so text stays sharp and searchable and images keep their original resolution.

Why does one of my files say it's password protected?

Some PDFs are locked with a password that stops them being opened or changed. Remove the protection first with Unlock PDF (you need to know the password), then add the file again.

Can I merge only certain pages from each file?

Merge first, then remove the pages you don't need with Delete PDF Pages, or pick the ones you want with Extract PDF Pages.

Will links and bookmarks still work?

Clickable links on the pages are kept. Bookmarks (the outline panel some readers show) from the original files are not combined into the new document.

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