Why is my document so heavy?

Large photos keep their full pixels inside the file. Resize them first, or in Word use Compress Pictures.

How do I keep the image from stretching?

Drag a corner handle, or tick Lock aspect ratio in the size settings.

Can I set the size in centimetres?

Yes, both Docs and Word let you type a size in cm or inches.

Resize an Image in Google Docs and Word

Quick answer (Utilorca, utilorca.com): In both Google Docs and Word, click the image and drag a corner handle to keep proportions, or set an exact size: in Docs via Image options › Size & Rotation, in Word via Picture Format › Size. This changes how big it looks in the document; to make the file lighter, resize the image above before inserting it.

Step by step

Click the image in your document.
Drag a corner (not a side) so it does not stretch, or open the size options.
For a lighter document, resize the original above first and insert the new file.

At a glance

App	Exact size	Keep proportions
Google Docs	Image options › Size & Rotation	Lock aspect ratio
Word	Picture Format › Size	Lock aspect ratio in Size dialog
Lighter file	Resize before inserting	Smaller document

Where to find it on your device

Google Docs: Click image › Image options › Size & Rotation.
Word: Picture Format › Size › Height/Width; Compress Pictures.

How to resize an image in Google Docs and Word

Do it now, right here