How to Compress a PowerPoint on Mac: A Comprehensive Guide

Compressing a PowerPoint presentation on a Mac is an effective way to reduce file size and improve performance. Large file sizes can make sharing and transferring presentations difficult. Compressing reduces file size while maintaining image quality. This comprehensive guide covers multiple methods to compress PowerPoints on Mac.

Why Compress a PowerPoint?

Here are some key reasons to compress PowerPoint files on a Mac:

  • Reduce file size – Compressing removes excess data and reduces file size, making transfers faster.
  • Faster load times – Smaller files load quicker when opening and presenting.
  • Easy sharing – Compressed files are easier to attach and share via email and cloud services.
  • Save storage space – Less storage space is required for compressed presentations.

PowerPoint Compression Options on Mac

The main built-in PowerPoint compression options on Mac include:

  • Compress Pictures – Reduces image sizes and resolutions to make files smaller.
  • Compress Media – Compresses videos, audio, and animations to reduce file size.
  • Save As Reduced Size PDF – Exports presentation as a smaller PDF file.

Third-party compression software and online tools offer additional compression capabilities.

Method 1: Use Built-In Compress Pictures

To compress images in a PowerPoint on Mac:

  1. Open the PowerPoint file
  2. Select the images to compress
  3. Go to the Picture Format tab
  4. Click Compress Pictures
  5. Choose compression quality option
  6. Click Apply to All Pictures

Benefits: Quick, easy, maintains high image quality.

Drawbacks: Only compresses images, not other media.

Method 2: Compress Media

To compress videos, gifs, and other media in a PowerPoint on Mac:

  1. Click on File
  2. Select Compress Media
  3. Choose desired compression quality
  4. Click Apply

Benefits: Compresses all media, not just images.

Drawbacks: Can reduce media quality at high compression.

Method 3: Export As PDF

Exporting as PDF can dramatically reduce file size:

  1. Click on File
  2. Select Export As
  3. Choose PDF
  4. Select Reduced Size PDF
  5. Export

Benefits: Often results in smallest files.

Drawbacks: Loses PowerPoint editing capabilities.

Method 4: Use Third-Party Software

Third-party apps like Smallpdf and Zamzar provide additional compression options:

  • Upload PowerPoint file
  • Choose compression settings
  • Download compressed file

Benefits: Very high compression ratios.

Drawbacks: Requires downloading software.

Tips for Maximum PowerPoint Compression

Follow these tips in addition to compression methods:

  • Delete unused slides and media
  • Resize oversized images
  • Convert 3D objects to 2D images
  • Use JPEG, PNG, or GIF instead of BMP
  • Check compression settings in PowerPoint Preferences


Compressing PowerPoint presentations on a Mac is easy with built-in tools like Compress Pictures and Compress Media. For maximum compression, export as PDF or use third-party software. Following best practices for inserting and formatting images, video, and audio can also reduce file size. Compressed PowerPoints load faster, share easier, and take up less storage space.