---
title: "Merge PDFs into one file"
description: "Combine several PDFs into one in the order you choose, build a bookmarked packet from PDFs and photos, or batch-merge files into groups. Free, in your browser."
url: https://help.pdfbetter.com/convert-organize/merge-pdf-files/
collection: "Converting & organizing"
section: "Combining & pages"
updated: 2026-10-18
publisher: "PDFBetter (AI Generated Inc.)"
---

# Merge PDFs into one file

> Open [Merge PDF](https://pdfbetter.com/tools/merge-pdf/), add two or more PDFs, drag them into order and click **Merge PDF**. It runs in your browser and downloads free without an account. Use [Assemble PDF](https://pdfbetter.com/tools/assemble-pdf/) to mix in photos, or [Batch merge](https://pdfbetter.com/tools/batch-merge-pdf/) to make several merged files at once.

- Available on: without an account, Free, Pro, Business

Do it in PDFBetter: https://pdfbetter.com/app/tools/

1. **Add the files**: Open Merge PDF and drop two or more PDFs (up to 20 at once). A password-protected file is flagged; unlock it first with [Unlock PDF](https://pdfbetter.com/tools/unlock-pdf/).
2. **Order the files**: Drag, use the arrows, or sort by name. The output follows this order.
3. **Adjust individual pages (optional)**: Under **Pages**, show all pages to move, rotate or remove single pages. The output then follows that view exactly.
4. **Set the output**: Name the file and choose **Bookmarks**: **Keep each file’s**, **One per file** or **None**.
5. **Click Merge PDF**: The file downloads straight from your browser.

## Three ways to combine

| Tool | Use it when | Extras |
| --- | --- | --- |
| [Merge PDF](https://pdfbetter.com/tools/merge-pdf/) | You're joining PDFs | Page-level reordering, rotate and remove; bookmark options |
| [Assemble PDF](https://pdfbetter.com/tools/assemble-pdf/) | You're building a packet from PDFs and photos | Images placed on pages of the size you choose, a label and bookmark per item, a **Blank page before** any item |
| [Batch merge](https://pdfbetter.com/tools/batch-merge-pdf/) | You have many files to merge into several outputs | Files are grouped by the text before a separator in their names (ACME_invoice.pdf + ACME_po.pdf → ACME.pdf) |

Already editing a document? In the editor, **Merge or upload** in the top bar (or **Insert pages from a file** in **Pages**) adds a PDF, an image or an Office file to the document you're working on. See [Manage pages in the editor](https://help.pdfbetter.com/editing/manage-pages-in-editor/).

### Do form fields and signatures survive?

Form fields stay fillable; fields that share a name across files are renamed (for example “Name_2”) so each stays independent. Digital signatures in a source file are no longer valid after merging, so merge first and sign afterwards.

### Is there a size limit?

No plan limit, because nothing is uploaded. Very large files can run out of browser memory; close other tabs or merge in two rounds.

### Can I merge Word files?

Convert them with [Word to PDF](https://pdfbetter.com/tools/word-to-pdf/) first (a server conversion), then merge the PDFs. In the editor, inserting a Word file converts it for you.

## Related articles

- [Split a PDF or extract pages](https://help.pdfbetter.com/convert-organize/split-pdf-extract-pages.md): Open Split PDF, choose Custom ranges, Every N pages, Each page or By file size, and click Split PDF. To pull a few pages into one new file, use Extract pages instead. Both run in your browser.
- [Rotate, reorder, delete or add pages](https://help.pdfbetter.com/convert-organize/rotate-reorder-delete-pages.md): Organize PDF does it all on one screen: drag thumbnails to reorder, rotate, duplicate, delete or insert pages, then click Save PDF. Rotate, Remove pages, Add pages and Resize each do one job. All run in your browser.
- [Which tools run in your browser and which use our servers](https://help.pdfbetter.com/convert-organize/browser-vs-server-tools.md): Merge, split, rotate, organize, images ↔ PDF, protect, unlock, sanitize and compare run in your browser: nothing is uploaded and they download free without an account. Office conversions, compression beyond Light, OCR and PDF/A run on our servers and count toward a monthly allowance.
- [Manage pages, page numbers and watermarks in the editor](https://help.pdfbetter.com/editing/manage-pages-in-editor.md): Click Pages in the toolbar to open thumbnails: drag to reorder, and use the buttons to rotate, duplicate, delete, crop, resize or insert pages. Page numbers and watermarks are in the toolbar too; headers, footers and Bates numbers are separate browser tools.

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Source: https://help.pdfbetter.com/convert-organize/merge-pdf-files/ · PDFBetter Help Center · Last checked against the product 2026-10-18. Questions: support@pdfbetter.com