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Merge PDF

Bring your documents into one PDF. Use Merge PDF locally with practical instructions, output settings and format limits.

A practical guide

Merge PDF

Combine several PDF documents into one file in a chosen reading order. Arrange the uploaded files before merging; pages inside each source keep their existing sequence. This is useful for assembling a cover letter, report and supporting pages into a single attachment of up to 100 pages.

  • Combine a cover letter and report
  • Assemble monthly statements
  • Bundle project handover documents

How to use Merge PDF

  1. Add the source PDFs

    Select at least two working, unprotected PDF documents. Check that the combined page count stays at or below the limit of 100 pages.

  2. Arrange document order

    Move the uploaded documents into the intended sequence. Put a cover sheet first and supporting material last; pages within each source are kept together.

  3. Create the combined document

    Run Merge PDFs after confirming the file order. The engine copies pages from each document into a new PDF without asking you to reprint them.

  4. Review the finished PDF

    Download the merged document and inspect transitions between source files. Confirm that every expected page appears and that the first and last pages are correct.

Understand the settings

This operation uses fixed output settings. Choose and order the supported files as described above, then review the output notes.

One project delivery attachment

A delivery package contains a two-page cover note, a twelve-page report and four supporting pages in separate PDFs. Add the files in that order and merge them. Review the resulting eighteen-page PDF before attaching it to the delivery message.

Check your result

Add at least two PDFs. Move documents up or down to choose their order; pages inside each document keep their original order. Up to 100 pages across the selected PDFs. Page content is copied; interactive forms, bookmarks and digital signatures may not carry over. Open the saved output in the app or workflow where you plan to use it. Check one representative result before repeating the same settings with more files. The original files stay unchanged.

What to know before you start

  • Up to 100 pages across the selected PDFs. Page content is copied; interactive forms, bookmarks and digital signatures may not carry over.
  • Upload up to 20 files, at least 2 with a combined size of at most 100 MB. The completed output must fit within 200 MB.
  • Files are checked by the local engine; a matching filename alone is not proof of valid contents.
  • Jobs run one at a time with a 180-second deadline. Temporary files expire after approximately 30 minutes; download them before clearing or restarting the app.

Merge PDF: common questions

Can I reorder pages within a source?

The merge tool controls document order and keeps each source document internally unchanged. To move individual pages, first use Reorder PDF pages on the relevant source, or reorder the complete merged document afterward.

How many pages can I combine?

The complete merged PDF can contain up to 100 pages. The tool checks the accumulated count while adding documents, so several individually valid files can still exceed the combined limit when merged together.

Do signatures and forms carry over?

Page content is copied, but interactive forms, bookmarks and digital signatures may not carry over as expected. Inspect those features in the downloaded document and retain the source files when their interactive behaviour matters.

Can I merge password-protected PDFs?

Use working, unprotected PDFs for this operation. If you know a document password, create an unlocked copy with the dedicated unlock tool first, then add that copy in the intended merge position.

Does Merge PDF upload files to another service?

Processing happens on the local server on this computer, using installed libraries, models and native tools. The browser-to-localhost connection is required, but no third-party conversion service is used. Initial dependency setup can require internet access; conversions use the installed local assets.

Can I continue after changing pages?

Pending selections stay available while navigating inside the app. Use My files to return to a tool draft or its results. Reloading or closing the tab discards pending browser selections; temporary job results expire after approximately 30 minutes. Download finished files before restarting the local app.