In this instance the Image alt text might read: A woman skipping through a green field.
Whereas an image description could read: A woman with brown hair wearing all white and holding a straw hat in her hand during the day. She skips away from the camera through a grassy field towards a lush green forest.
If you get stuck writing image descriptions, here are some people and brands doing it beautifully:
How to add alt text on Instagram, Facebook, LinkedIn and Twitter
Instagram
1. Upload your image
2.Tap on advanced settings
3. Write your alt text. This should be a concise description of your image.
4. Go back to your post, and write your caption. At the end of the caption, include an image description. This should be a detailed description of your image. See below for how we style our image descriptions (but it’s totally up to you how you want to do it, as long as you clearly state that it’s the image description).
5. If you run out of space in the caption (or you’re delivering a pithy one liner and want to keep your caption clean), you can include the image description in the comments, as long as you clearly state this in the comments.
Twitter
1. Upload your image
2. Tap on the button that says ALT
3. Write your alt text. This should be a concise description of your image.
4. Go back to your post, and write your caption. If you can't fit your image description in the body of your caption, tap on the blue ‘plus’ button, and add your image description as an additional tweet.
Facebook auto generates alt text, so you're only able to add custom alt text after you've posted your content.
1. Create a post as usual, and add an image description at the end of your caption.
2. Publish your post; then open it again.
3. Long press on the image until a menu appears. Tap on alt text.
4. On the next screen, you'll see the alt text that FB has auto generated (usually terrible).
5. Write your own alt text
1. Upload your image
2. Tap on the button that says 'add alt text'.
3. Write your alt text. This should be a concise description of your image.
4. Go back to your post, and write your caption. At the end of the caption, include an image description. This should be a detailed description of your image.
