An image that is at least 1024px wide and that has aspect ratio of at least 4:1 (that is, at least four times wider than it is tall). This is equivalent to the tag search width:>=1024 ratio:>=4:1.
Note: This tag is automatically added to all posts that meet these criteria. It may also be added manually to other posts that don't meet the criteria.
This tag implicates long_image (learn more).