Left or right aligned: no more than 500px wide
Centered:No more than 1000px wide
Save jpg images at 80% quality available
Save images with a file name that describes the image using key phrases that tie the page together.
Alternative Text (Alt text)
This is how Google ‘reads’ the image when, so the Alt text description should be a punctuated, full sentence description of the image using the keywords of the page.
If for some reason the image cannot load on the page, the Alt text will display.
It is an expectation of Google that all images on your website have alternative text set, and if it is missing, it will interfere with your website search engine optimisation.
Border: adding 1 to this field will add a 1px border to the image, 2 will add a 2px border and so on
HSpace (Horizontal Spacing): adding 1 to this field will add a 1px horizontal padding to the image, adding 10 will add 10px
VSpace (Vertical Spacing): adding 1 to this field will add a 1px vertical padding to the image, adding 10 will add 10px
Alignment: If the image is being added to a page with text, you should always set the alignment of the image based on the text around it.