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Merge PDF files

Organize

Combine multiple PDFs into one. Free, private, in your browser.

Drop a PDF here

Process ≤ 50.0 MB (Add more)

4.93,612ratings

About this tool

Combine multiple PDFs into one. Free, private, in your browser.

Privacy by architecture

All processing happens in your browser. Your PDF never uploads to our servers. No account required, no usage limits.

How it works

  1. 1Choose a PDF — never leaves your device
  2. 2Configure the tool to your needs
  3. 3Save the result to your downloads

Frequently asked questions

Is this PDF merger free?

Yes, completely free with no usage limits, no account required.

Will my PDFs be uploaded to a server?

No. All processing happens in your browser. Your PDFs never leave your device.

How many PDFs can I merge at once?

Up to 20 PDFs per operation, with a total size limit of 50MB on web. For larger batches, install Reader Desktop.

Does it work offline?

Yes. After your first visit, Reader works completely offline as an installable PWA.

Is the output a valid PDF/A?

The merged PDF is a standard PDF 1.7. For PDF/A export, use the dedicated PDF/A tool (coming in next sprint).