Merge PDF

Merge multiple PDF files into one online, free, in your browser. Reorder pages and download — no signup, no uploads to ThothBox.

About this tool

Merge PDF combines multiple PDF files into a single document in your browser. Reorder pages before merging, keep bookmarks when possible, and download the result — nothing is uploaded to ThothBox.

How to use

  1. Add two or more PDF files (drag and drop or file picker).
  2. Reorder the files if needed so pages appear in the right sequence.
  3. Click Merge and wait for processing to finish locally.
  4. Download the combined PDF to your device.

FAQ

Can I merge password-protected PDFs?

Unlock each file first with Unlock PDF, then merge the unlocked copies.

Is there a limit on how many PDFs I can merge?

Limits depend on your device memory. Large batches may need to be merged in smaller groups.

Do my PDFs leave my device?

No. Merge PDF runs entirely in your browser — files are not uploaded to ThothBox.

What does Merge PDF do?

Merge PDF combines multiple PDF files into a single document in your browser.

How do I use Merge PDF?

Open the Merge PDF tool, then add two or more PDF files (drag and drop or file picker).

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