Definition: Alt text is a short written description of an image that screen readers read aloud, so people who cannot see the image still get its meaning.
Also called: alternative text, image description
Updated October 10, 2026
Describe what matters in the image for this post, in one or two sentences. Include any text that appears in the image. Skip “image of”; the screen reader already says it is an image.
Instagram, Facebook, LinkedIn, X, Bluesky and Pinterest all have an alt text field when you upload an image. Instagram also writes automatic alt text, but your own is more accurate.
Weak: “coffee”. Better: “An iced oat latte on a wooden counter, with the text ‘Autumn menu, from Friday’ above it.”
Aspect ratio is the proportional relationship between an image or video’s width and height, written as width:height (for example 4:5 or 16:9).
A carousel post is a single post containing several images or videos that people swipe through, one slide at a time.
Write once, tailor each version yourself or with optional AI, and schedule to 6 networks from one calendar.