It can be automated only if you place images and text in the first column in the table. The width of the first column follows the length of the first word (no spaces, regardless of the position of the row). The size of the image has no effect here. So, if you want 800px for images and text, you need to write some characters without spaces in the first or last line that are the same length as 800px (eg characters █ with normal size as much as 87 chars for approximately 800px size of image), then set it to transparent color.

for example:

███████████████████████████
This sample image has been taken from the source site news.bitcoin.com where the width has been resize to 250 pixels. This is an image that symbolizes physical bitcoin which is the most popular at the moment.	colomn2	colomn3