Learn how to compress a PDF on an iPhone to reduce file size.

Compressing your PDFs is an easy way to reduce file size — and make them more shareable in the process. Learn how you can compress PDF files on your iPhone.

Sometimes you may have to share PDF files from your iPhone while you’re on the go. But despite their power, both modern smartphones and mobile internet connections can struggle with large PDFs. Compressing PDFs reduces their file size and makes them easier to share.

Follow these simple instructions to compress PDFs on your iPhone using the Adobe Acrobat online PDF compressor:

Use an online PDF compressor on your iPhone.

  1. Open Safari or any other browser. Navigate to the Acrobat online PDF compressor.
  2. Tap on Select a File and locate your PDF.
  3. Download your compressed PDF. The compressor will show you how much it reduced the file size.

Edit your PDFs with dedicated apps.

To get more out of your PDFs directly on your iPhone, download the Adobe Acrobat Reader for iOS. This app transforms your iPhone into a serious PDF editor. With Acrobat Reader, you can compress and reorganize PDFs, add comments and annotations, and create or request digital signatures — all on your iPhone while you’re on the move.

To compress a large PDF file right now, head on over to the Acrobat online PDF compressor.