What is alt text?

A description of what an image shows, read aloud by screen readers.

Alt text lets people with visual impairments understand an image. Instagram, Facebook, LinkedIn and Pinterest let you write custom alt text.

Describing the image briefly and accurately also helps platforms understand your content.

Updated: October 12, 2026 · All terms

Run your social media from one panel

IZY Social writes posts in your brand's voice, publishes them at the right time and reports the results.