How to flatten PDFs before combining them

To share a specific page via Mail, Airdrop, etc, pick the page and click Share.

For this, pick the pages, click Extract and select where to save the new PDF.

Extract one or more selected pages to save them as a separate file.

To copy or paste pages, pick the needed thumbnails, and select Copy or Paste on the toolbar.

To delete one or several pages, select them and click Delete (or press the backspace button).

To rotate a page, select the desired thumbnail, and click Rotate on the toolbar.

Click on the Thumbnails icon at the top left to see the small previews of all pages.

Once you’ve combined several PDF files, you can easily reorder pages the way you wish.

Now, you can just drag & drop pages from one PDF to another.

Click on the Thumbnails icon at the top left.

Open the second file in Split View, so you can see both PDFs side-by-side.

Tap the View settings button at the top left and select the Split View mode.

Sometimes you may need to combine only specific pages from a document rather than the entire PDF files.

Pick the desired PDF file and click Add.

Click on the Thumbnails button on the toolbar at the top left of the screen.

Open one of the files you wish to merge in PDF Expert.

If you need to merge just two PDF files, you can use this method: Your file is ready! How to combine two PDFs on Mac

Choose two or more PDFs you’d like to combine and press Merge.

Launch PDF Expert and click File at the top left corner of the screen.

Here’s the quickest way to merge multiple PDFs on your Mac: How to combine multiple PDFs into one on Mac

How to merge pdf files in preview mac os x