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How to add alt text on Threads

Guides2/24/2026Bryam Loaiza
Threads edit photo alt text UI

Edit photo → Alt text → Override generated text

Threads supports descriptions up to roughly 1,000 characters.

Steps

  1. Create a new thread and attach an image.
  2. Select Edit photoAlt text.
  3. Override any generated text and write your own description.
  4. Save, then publish.