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AI Alt Text Generator

Generate accurate alt text, a caption and keyword tags for any image in seconds.

Drop an image or browse

PNG or JPG, up to 16 MB

See what the ai alt text generator can do

Any image becomes accurate alt text, a caption and keyword tags.

Three simple steps

1

Upload an image

Drop in a photo, product shot, screenshot or illustration you need described.

2

Generate the description

AI reads the image and writes concise alt text, a natural caption and a set of keyword tags.

3

Copy and use

Paste the alt text into your CMS, the caption into a post, and the tags wherever you organize images.

What the alt text generator does

This tool looks at an image and writes the words that describe it: concise alt text for accessibility and SEO, a natural caption for posts and pages, and a set of keyword tags for organizing and searching your library. It is the same image-understanding step behind image to text, focused on describing a picture rather than reading printed words from it. Instead of writing alt text by hand for every image, you upload, generate and copy.

What you get from every image

  • Alt text: a short, factual description for the alt attribute - what screen readers announce and search engines read.
  • A caption: a natural, readable sentence to display alongside the image.
  • Keyword tags: relevant terms to label, group and find the image later.

Where alt text and captions help

Accessible alt text means people using screen readers understand your images, which is also a legal requirement in many places. For search, descriptive alt text gives crawlers context they cannot get from pixels, helping images surface in results. And for large libraries, consistent tags make everything findable. It is useful across blogs, online stores, documentation and social media - including images you make with the AI image generator.

Tips for the most accurate descriptions

Upload a clear, well-lit image so the model can read the scene. Review the output before publishing - keep alt text specific and honest rather than keyword-stuffed, and trim it to the detail that matters. For images carrying important printed text, run image to text as well to capture the words exactly. Using AI images responsibly, including how you describe them, is covered in our AI image safety guide.

Questions about the ai alt text generator

What is the difference between alt text and a caption?
Alt text is a short, factual description read by screen readers and search engines - it explains what the image shows. A caption is the visible text you place near an image for readers. This tool generates both, plus tags, from one upload.
Does good alt text help SEO?
Yes. Search engines cannot see an image, so descriptive alt text helps them understand and rank it, and it is essential for accessibility. Keep it accurate and specific rather than stuffed with keywords.
How accurate are the descriptions?
The model is good at the main subject, setting and obvious details. Always glance over the result before publishing - it can miss small text, exact counts or brand names, which you can correct in a second.
Try AI Alt Text Generator