Office for Mac Issues

How to Reduce PowerPoint Storage Usage on Mac

Camila Milosovich Sep 30, 2026 868 views

Question details

The user needs to reduce the amount of Mac storage space consumed by PowerPoint.

How to Reduce PowerPoint Storage Usage on Mac

Product: Microsoft PowerPoint
Device & OS: macOS
Scenario: Managing local disk space and dealing with bloated presentation files.
Observed behavior: PowerPoint storage usage is excessively high, often reaching several gigabytes, primarily due to large presentation files containing embedded videos, high-resolution images, and embedded fonts.

Before you start

Check your Mac's Storage settings via System Settings to identify whether the excessive storage is being used by the PowerPoint application itself or by individual large presentation files saved in your documents.

Solution 1Recommended

Compress Pictures and Media in PowerPoint

Use PowerPoint's built-in compression tools to significantly reduce the size of high-resolution images and embedded videos.

Uncompressed media is the most common cause of large presentation files. Compressing these elements can drastically reduce file size without noticeably affecting the visual quality during presentations.

Open picture compression settings

Open your large presentation in PowerPoint for Mac, click on the 'File' menu at the top of the screen, and select 'Compress Pictures'.

Select picture quality

Choose a lower resolution setting such as 'On-screen' or 'Email' depending on your display needs, and ensure you select the option to apply it to all pictures in the file.

Compress media files

To reduce video and audio sizes, navigate to 'File' > 'Info' > 'Compress Media' and select an appropriate quality level to shrink embedded multimedia.

Compress Pictures and Media in PowerPoint

Effective Storage Reduction: Compressing media is often the fastest way to shrink a bloated presentation file by over 50% without losing noticeable on-screen quality.

Solution 2

Disable Font Embedding

Stop PowerPoint from saving entire font families inside your presentation, which can unnecessarily increase the file size.

Solution 3

Use the Reduce File Size Option

Mac versions of PowerPoint offer a dedicated quick-action to compress the entire presentation file at once.

Lightweight Alternative

Reduce Presentation Sizes Easily with WPS Office

If you want a lightweight office suite that takes up less application storage on your Mac and offers powerful tools to compress large presentations, WPS Office is an excellent choice.

1. Open WPS Presentation: Launch WPS Office on your Mac and open your large .pptx presentation file.
2. Access the File Compressor: Navigate to the 'Tools' tab on the top ribbon and click on 'File Compressor'.
3. Select compression level: Choose between standard or advanced compression settings based on your desired file size and quality balance.
4. Compress and save: Click 'Compress' to reduce the file size and save the optimized presentation to your Mac.

Lightweight installation footprint saves overall application storage space on your Mac.Fully compatible with Microsoft PowerPoint (.ppt, .pptx) file formats.Built-in File Compressor to easily shrink bulky presentation files in a few clicks.Free to use with a clean, all-in-one tabbed interface.

microsoft office alternative - wps office

Frequently Asked Questions

Why is PowerPoint using so much storage on my Mac?

Typically, the storage is consumed by large presentation files containing high-resolution uncompressed images, embedded videos, and custom embedded fonts, rather than the PowerPoint application itself.

How can I find which PowerPoint files are taking up the most space?

You can find large files by going to the Apple menu > System Settings > General > Storage. Click the 'i' icon next to 'Documents' to sort files by size and easily identify your largest presentation files.

Does deleting the PowerPoint app free up my storage?

Uninstalling the PowerPoint application will free up a few gigabytes of application space, but it will not remove the large presentation files saved on your local drive that are usually the root cause of the storage issue.

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