How to Compress Images in PowerPoint (2026)
Image-heavy decks balloon in size, mostly because PowerPoint keeps full-resolution photos plus the parts you cropped away. Compress Pictures downsamples images and discards cropped data, often cutting a file by half or more. Here’s how to do it for one image or the whole deck.
1. Compress One Image (Windows & Mac)
- Click any picture to show the Picture Format tab.
- Click Compress Pictures.
- Pick a Resolution (see section 3).
- Click OK.
By default this affects only the selected image — uncheck the box to compress all (next section).
2. Compress Every Image at Once
In the Compress Pictures dialog, uncheck Apply only to this picture. Now your chosen resolution applies to every image in the deck — the fastest way to slim a large file.
3. Choose the Right Resolution
- High Fidelity — keeps original quality (smallest savings).
- HD (330 ppi) — good for large screens.
- Print (220 ppi) — sharp on paper.
- Web (150 ppi) — best for email and on-screen viewing.
- E-mail (96 ppi) — smallest file.
For most shared decks, Web (150 ppi) is the sweet spot.
4. Delete Cropped Areas
In the Compress Pictures dialog, check Delete cropped areas of pictures. PowerPoint normally stores the full original of any cropped image — removing that hidden data is often the single biggest file-size win.
5. Set a Default and Compress Media
- File > Options > Advanced > Image Size and Quality lets you set a default resolution or Discard editing data for the whole file.
- For audio/video bloat, use File > Info > Compress Media.
6. Troubleshooting
Compress Pictures is greyed out
You haven’t selected an image. Click a picture first to reveal the Picture Format tab.
The file is still large after compressing
Embedded video or audio is the cause, not images. Use Compress Media under File > Info.
Images look blurry after compressing
You compressed too aggressively. Undo with Ctrl+Z and choose a higher resolution like HD (330 ppi).
Related PowerPoint guides: How to crop an image · How to embed a video · How to add a GIF · How to convert to video · How to insert a table
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