Preview · Terminal · Desktop App · Free

Merge PDF Files on — 3 Free Methods Including Preview

has a built-in PDF merge capability in the Preview app — no downloads required. This guide covers Preview, Terminal command, and PDF Agile desktop app. All three are free.

⬇ Merge PDF on Free – PDF Agile

Method 1 — Preview App (No Download, Built-in)

  1. Open the first PDF in Preview.
  2. Go to View → Thumbnails to show the sidebar.
  3. Open the second PDF in Finder.
  4. Drag its icon into the Preview thumbnail panel at the desired position.
  5. Go to File → Export as PDF to save the merged file.
14 Mojave and later. Preview is pre-installed on all .

Related guides:

Merge PDF on other platforms  Convert HEIC to PDF on  
15+)

Open Terminal and run:

/System/Library/Automator/Combine\ PDF\ Pages.pdf file1.pdf file2.pdf file3.pdf

15 Catalina and later. No additional software required.

Method 3 — PDF Agile Desktop App for

Drag files into the app, set order, click Merge. Supports files up to 2 GB each, unlimited file count. Fully offline after installation.

Frequently Asked Questions

Quick answers about this PDF task.

Use the built-in Preview app — no download needed. Open the first PDF, show thumbnails, drag the second PDF in, and export as PDF.

Yes.

Use the built-in join command: /System/Library/Automator/Combine PDF Pages.pdf file1.pdf file2.pdf

PDF Agile desktop app handles large batches most efficiently. Preview becomes slow with 10+ files due to thumbnail rendering.

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No sign-up, no watermark, no file size limit.

⬇ Merge PDF on Free – PDF Agile