Alt-Text Assistant

Draft image descriptions for social posts, then paste them into each platform’s alt-text field. This tool does not analyze images - you write the description.

Start from a common graphic type

Alt text (for the image accessibility field)

Check limit for

0 / 1000 characters

Add a description before copying.

Post caption (optional, for your own reference)

Alt text and caption are different fields on most platforms. Do not put the full caption in the alt field.

How to use this

Export or screenshot your graphic from Graphic Maker, Quote Card, Flyer, or another tool.
Write alt text here that describes the visual content (not the caption).
Copy the alt text and paste it into Instagram, Facebook, X, or LinkedIn’s “Edit alt text” / accessibility field when you post.
Keep your usual caption in the normal post field.

Before you post

Describes what is visually in the image (people, signs, setting)
Includes important text that appears in the graphic
Mentions the local number or union name if shown
Stays concise - usually 1–2 sentences is enough
Does not start with “Image of” or “Photo of”

Bad vs good

Too vague

“Union graphic” or “Photo of a meeting”

Useful

“Blue Local 243 graphic: membership meeting Thursday 5pm, Room 204. Union logo top left; date and location in white text.”