🔒 Local browser processing

Merge PDF

Combine multiple PDF documents into one downloadable file without creating an account. No registration is required.

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How to use Merge PDF

  1. Select at least two PDF files.
  2. Confirm that the files appear in the order you want them combined.
  3. Choose Merge PDFs and keep the tab open while the files are processed.
  4. Download merged.pdf and review the page order before sharing it.

What the tool creates

The merger copies the pages from each selected PDF into a new document in the same order as the uploaded files. It is useful when invoices, reports, scans or application documents need to be delivered as one attachment.

The result is a new PDF named merged.pdf. Original pages are copied rather than intentionally rasterized, so the page appearance is normally retained.

Common uses

  • Combining monthly invoices into one archive
  • Joining scanned contract sections
  • Submitting several forms as one PDF

Important limits

  • Encrypted PDFs may require their password to be removed first.
  • Document-level bookmarks, portfolios, signatures or attachments may not be preserved.
  • Large source files can use significant browser memory, especially on phones.

Privacy note: Supported processing runs in this browser tab. Do not process files you are not authorized to handle, and keep an original backup.

Merge PDF questions

Does merging reduce page quality?

The tool copies PDF pages into a new document and does not intentionally convert them to images.

Can I merge more than two PDFs?

Yes. Select two or more files; practical limits depend on the available memory in your browser.

Can I change the order after selecting files?

The current tool uses the selection order. Select the files again if the order is not correct.

Will digital signatures remain valid?

Changing a signed PDF can invalidate signatures, so verify signed documents after processing.

Are files uploaded?

Supported processing runs in your browser. FileSwift Tools does not intentionally upload the selected PDFs.