PDF Merger

Combine ordinary PDF pages in your chosen document order.

Choose PDFs in page order

Browser-only processing. Up to 50 MiB combined and 150 pages; 20 files for merging. Password protection, forms, signatures and attachments are unsupported.

PDF Tools Local processing

Last reviewed: 2026-10-04 · Testing methodology

Use this in a task

Choose a task to see when this tool helps and which steps you can skip.

Choose a Document Task →

How to use

Arrange PDFs, merge locally in a cancellable worker, then download a saved file checked for page-count integrity.

Choose input

Choose PDFs.

Set options

Arrange document order and merge.

Use the result

Download and inspect page order and content.

Examples and checks

Worked example

Use the settings below and inspect the saved result.

Input: A three-page PDF followed by a one-page PDF
Output: A four-page PDF preserving page order

Limits and questions

Inputs are processed in your browser. Analytics and advertising can make separate network requests.

Supported behavior

Arrange PDFs, merge locally in a cancellable worker, then download a saved file checked for page-count integrity.

Limits and review

20 files, 50 MiB combined and 150 pages combined. Forms, signatures, portfolios and attachments are rejected. Page copying may omit document-level bookmarks and metadata.

Verification

Source and copy reviewed on 2026-10-04. The source and page copy were checked for whole-file ordering with Move up/down, and limits on encrypted or advanced PDF features. Inspect the final document in a viewer.

Testing methodology

When to use another workflow

Use a desktop PDF editor for portfolios, forms, signatures, bookmarks, accessibility tags, or very large document sets.

Frequently asked questions

What are the limits?: 20 files, 50 MiB combined and 150 pages combined.
What should I check before using the output?: Forms, signatures, portfolios and attachments are rejected. Page copying may omit document-level bookmarks and metadata.