Combine PDF Files Online

Merge and organize multiple PDF documents seamlessly. Fast, secure, free, no sign-up, no watermark, up to 20 files.

Upload
Arrange
Combine
Download

Free Online PDF Merger

How to combine PDF files online

Upload multiple PDF files, arrange the files, combine them, and download one PDF.

  1. 1

    Upload files

    Select the PDF documents from your device.

  2. 2

    Arrange the order

    Review the uploaded PDFs and drag/arrange them in the sequence you need.

  3. 3

    Combine files

    Click Combine to merge all the PDFs into a single document.

  4. 4

    Download the PDF

    Download the combined PDF and start another merge when needed.

PDF merge details

PDF document sets

Join reports, statements, contracts, scanned forms, and separate PDF chapters into one organized file.

PDF upload limits

Upload up to 20 PDF files at once. Each file can be up to 120 MB.

Private processing

Uploaded files and generated PDFs are automatically deleted from the server after 1 hour.

Frequently asked questions

How do I combine PDF files online?

Upload your PDF files, arrange them in the sequence you want them to appear in, click Combine, and download the combined PDF.

Can I combine password protected PDFs?

Only unlocked PDFs can be combined. Please make sure your PDFs do not require a password to be read before uploading.

Is CombinePDF free?

Yes. CombinePDF is free to use, requires no account, and does not add a watermark.

What are the upload limits?

You can combine up to 20 files at once, and each file can be up to 120 MB.

What happens to uploaded files?

Uploaded files and generated PDFs are automatically deleted from the server after 1 hour.