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Foundry✦pdf

PDF tool · in your browser

Merge PDF without uploading

Worried about sending sensitive contracts to a stranger's server? You don't have to. This tool combines your PDFs entirely inside your browser — nothing is uploaded, so the files never leave your computer.

Network0 uploads

Drag & drop PDF files here

or click to choose files

PDF · processed in your browser, never uploaded

How it works

  1. 1Drop or select the PDF files you want to combine.
  2. 2Drag to reorder them so the pages end up in the right sequence.
  3. 3Click Merge — the combined PDF downloads instantly.

When this helps

  • Combine contracts, financial records, or client documents without sending them to a processing server.
  • Join files while working under a policy that prohibits third-party document uploads.
  • Merge PDFs on a slow connection because only the page itself needs to load.

Tips for a clean result

  • Put files in the final order before merging; the arrow controls work with a keyboard as well as a pointer.
  • Keep the originals until you have checked the combined page order.

Frequently asked questions

Are my files uploaded anywhere?+

No. Merging happens entirely in your browser using JavaScript. Your PDFs never leave your device.

Is there a file size limit?+

Each file can be up to 250 MB. Larger workloads can be split into smaller batches.

Does it cost anything?+

The merge tool is completely free — no account or credits needed.

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