Webpage gone very small how do I restore it to a readable size?

While holding down the Ctrl key, press and release the 0 (zero) key.

Hold down the Ctrl key while using the scroll button on your mouse to zoom in and out

Thanks for your answers it’s something I always forget how to do!

Hold down Ctrl and type either + or -.

Hi basstrom188,
For reading a google book, you
press F11 key for full view of web browser. Otherwise you use zooming, such as press Ctrl key with ’+’.

CrifJohnson