AI Alt Text GeneratorFree Alt Text for Images

An alt text generator writes the text alternative that goes in an image's alt attribute. This one reads the image with a vision model and returns a description you can copy into your HTML, CMS, or page builder. It is a drafting aid, so you stay in control of the final wording.

It is a strong starting point, not a finished answer. The model describes what is visible, but it cannot know why the image is on your page. Read every suggestion and adjust it so it conveys the meaning the image carries in its context, then use it.

Yes. Alt text gives search engines context about an image, which is how images appear in image search and how a page signals what it covers. The gains come from accurate, natural descriptions written for people, not from packing keywords into the attribute.

Usually one clear sentence, roughly 125 characters or less, which is a comfortable amount for screen readers to announce in one go. If an image genuinely needs more explanation, such as a chart or a diagram, put the detail in the surrounding page text and keep the alt text short.

Images that add no information, such as background flourishes or spacer graphics, should carry an empty alt attribute (alt=""). That tells screen readers to skip them instead of announcing something distracting. Leaving the attribute off entirely is not the same thing and can cause the file name to be read aloud.