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As an example, we'll import the picture below into a Word document. The image is 4.13 MB in size with a resolution of 3801 x 4978 pixels.
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Word will automatically resize the image to fit the margins of the document but the image data remains unaltered.
To confirm this, right-click on the image and select Picture > Size to show that Word has reduced the image to 12% of its original size.
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Because of this, the saved Word document in our example is over 4.2 MB.
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Compressing an image within a Word document.
Left-click the imported image and select Picture Tools > Format > Compress Pictures from the top menu.
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In the Compress Pictures dialog box, select either 'Selected pictures' or 'All pictures in document', then OK > Apply.
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Confirm the change by right-clicking on the image and selecting Picture > Size. A height and width of 100% means the image has been successfully compressed.
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With a compressed image, the saved Word document is under 400 KB.
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This feature is also available in Excel and PowerpointPowerPoint.