Compress pictures to reduce the file size in Office for Mac

You can reduce the file size and save disk space by compressing pictures in your document. The compression options reduce both the file size and picture dimensions based on how you intend to use the picture, such as viewing on screen or in an email message. You can compress all pictures in the file or just the ones that you select. 

Note: Compressing a picture to reduce the file size changes the amount of detail retained in the source picture. This means that after compression, the picture can look different than before it was compressed.

Compress pictures

  1. To compress all pictures in your document, on the ribbon, select File > Compress Pictures.

    Under the Picture tab, select Compress Pictures

    To compress only selected pictures, hold down SHIFT, click the pictures you want to compress, and then click Compress Pictures Compress Pictures button on the Picture Format tab.

  2. Select one of the following in the Picture Quality box:

    To compress pictures for

    Do this

    Printing

    Click Print (220 ppi).

    Viewing on screen

    Click On-screen (150 ppi).

    Sending in an email message

    Click Email (96 ppi).

    Keeping the current resolution and minimizing changes to the picture

    Click Use original quality.

    Tip: If you have cropped any pictures, you can reduce the file size even more by selecting the Delete cropped areas of pictures check box.

  3. Click Selected pictures only or All pictures in this file.

    Note: If you used the File menu to choose all pictures in step 1, these options will be unavailable. Compression will be applied to all pictures in your document.

Compress pictures

  1. Select at least one picture in your document, and then on the menu bar select File > Reduce File Size.

  2. In the Reduce File Size dialog box, select one of the following under Picture Quality:

    To compress pictures for

    Select this

    Printing

    Best for printing (220 ppi).

    Viewing on screen

    Best for viewing on screen (150 ppi).

    Sending in an email message

    Best for sending in e-mail (96 ppi).

    Keeping the current resolution and minimizing changes to the picture

    Keep current resolution

    Tip: If you have cropped any pictures, you can reduce the file size even more by selecting the Delete cropped areas of pictures check box.

  3. Under Apply to select Selected pictures only or All pictures in this file.

Related information

To change the visual size or shape of a picture or other object on a slide, simply click the object and drag one of the sizing handles until it appears the way you want it to. You can also Crop a picture.

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