Zoom settings in Google Docs
With Google Docs, you can adjust the zoom setting of a document to make it appear larger or smaller within your browser window. This is useful if you need help reading small text, or if you'd like to zoom out to see how a whole page looks.
You can see a document’s current zoom level by looking in the toolbar, where it’s shown as a percentage.
To adjust it, click the drop-down arrow and select a zoom level. Choosing “Fit” will make your document just as wide as your browser window, even if you resize your window.
You can also type a zoom level from 50 to 200 directly into the zoom level field in the toolbar.