Pages and files

How to Merge PDF Files Into One Document

Updated 2026-09-17 · 2 min read

Merging sounds trivial until you need the pages in a specific order, a cover page at the front and three scanned receipts at the back, all the right way up.

This covers combining files and tidying the result in one pass.

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Edit a PDF

Combining files

Open the first PDF, then insert the others. Each file's pages are appended in order and the combined document keeps the original fonts, links and form fields rather than being re-rendered into images.

Ordering and rotating

Use the page view to drag pages into position, rotate anything scanned sideways, duplicate a page you need twice and delete the blanks a scanner added. Do this before exporting so you only write the file once.

Keeping the file small

Merging photographed receipts creates large files fast. Compressing images on export usually cuts the size dramatically while staying perfectly legible on screen and in print.

Frequently asked

Is there a limit to how many files I can merge?

Practically, your device's memory. Dozens of ordinary documents are fine.

Do form fields survive a merge?

Yes, though duplicate field names across files may need renaming.

Can I merge images with PDFs?

Yes, JPG and PNG files can be added as pages.

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