Skip writing “image of” or “picture of.” These are a given.

[shaownhasan]

Keep it succinct, yet informative. 125 characters is a common guideline, but don’t be afraid to write longer to paint a clearer picture for graphics or images alike.
Include keywords. Alt text plays into SEO—include keywords, as long as they’re relevant.
Include context, too. The alt kazakhstan business email list text for the post below is “A bear laying face down with arms and legs spread out in a classic sploot pose,” which clearly explains why the image was paired with a caption and on-screen text about splooting.
A brown bear sprawled awkwardly on a pebbly beach, with calm water and sparse grass in the background. Text on the image reads: Splootathlon.

And pro tip: Add video descriptions, too. Videos may not have an alt text option, so remember to add descriptions to your captions or threads to describe your video content. The below video from US Fish and Wildlife Services provides an in-depth and extremely informative description of their video.

A video of a deep sea jellyfish in the Mariana trench from the US Fish and Wildlife Service where they've included a long and informative video description describing the video.

Finally, just remember: don’t overthink it. Alt text is subjective. As Alexa put it, “As the content author, you have the power to decide what details are important in not only your image, but your entire post as well.”

A tweet by a Twitter user called roll with the punches. The text reads, Pro tip when writing image descriptions for folks: You're not writing a professional newspaper caption of a stock photo. Just let blind and low vision users know what they might wanna see! For example: and the tweet continues into a longer thread.

As far as how you actually implement it, here are a few tips on how to add alt text on each platform:

As far as how you actually implement it, here are a few tips on how to add alt text on each platform: