CookPDF
Merge PDF right on your device

Merge multiple PDF files into one document online

Combine multiple PDF files into one in the order you choose

Drop PDF files here or

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Up to 10 files · Max 100 MB each

PDF files only

🔒 Processed on your device · Never uploaded to a server · Free

  • Processed on your device
  • Not uploaded to CookPDF
  • No account needed

Processed on your device

Files are not uploaded to CookPDF servers

The main operation runs in the browser on your device.

Keep the original

You should save the original file before changing the page structure or document quality.

Check the result

Review the order, page count, quality, and signatures before using the new file.

How to merge PDF

Follow three steps and check the new file before using it.

  1. Add PDF files

    Choose the documents you want to combine from your device.

  2. Arrange the order

    Drag and drop files or pages into the order you want.

  3. Merge and review

    Create the result file, review the order, then download.

Highlights

Useful capabilities for the right task on PDF documents.

Merge multiple documents

Combine separate parts into one PDF file that is easy to send and store.

Control the order

Drag and drop to decide which document or page comes first.

Add or remove files before merging

Adjust the input list without starting over from scratch.

Processed on your device

The main operation runs in your browser; files are not uploaded to CookPDF servers.

Use cases

Common situations for arranging or optimizing PDFs.

  • Combine records in the right order

    Combine the cover, content, and appendix into one complete PDF file.

  • Consolidate documents from multiple sources

    Merge reports, forms, or scans into a single document to share.

  • Prepare a document set for storage

    Create a single file instead of many scattered files that are hard to manage.

Ready to merge PDF?

Choose your PDF files to get started and check the result right in your browser.

Merge PDF

Merge multiple PDF files into one document online

Combine multiple PDF files, drag and drop to arrange the order, and review the full list before downloading the merged document.

When to use it?

  • Combine records: Combine forms, appendices, and supporting documents into one file.
  • Create a complete report: Merge the cover, content, and appendix in reading order.
  • Prepare documents to send: Combine several small files so the recipient only needs to open one file.

Recommended workflow

Keep the original files, set up the task on the preview, and check every affected page before downloading. For documents used for signing, printing, or official release, open the result file in another PDF reader to verify.

Limitations to know

Check the order, page orientation, page size, and bookmarks after merging. Digital signatures in the source files may not be preserved when a new document is created.

Data and session

The main operation runs on your device and files are not uploaded to CookPDF servers. The browser may cache data locally to restore your session; you can clear the session in the interface or clear website data in your browser settings.

Frequently asked questions

Information about results, limitations, and how files are handled.

Can I reorder files before merging?
Yes. Drag and drop the items in the list before creating the result file.
Does merging PDFs lose any pages?
The tool combines the selected pages; you should check the page count and order in the result before using it.
Can files with different page sizes be merged?
Yes, they can be merged, but the pages may keep different sizes and orientations.
Where are files processed?
The main operation runs on your device and files are not uploaded to CookPDF servers.

Ready to merge PDF?

Choose your PDF files to get started and check the result right in your browser.

Merge PDF