MetaMonster
Free AI Alt Text Generator
Describe one image or a whole page at once. Get SEO-friendly, screen-reader-friendly alt text you can copy and paste.
MetaMonster finds missing alt text across your whole site and writes it in bulk. see how.
How to write good alt text
Describe what the image actually shows, in the words a customer would use: "stainless steel pour-over kettle with gooseneck spout" beats "kettle-final-v2.jpg". If the image supports a page topic, work the keyword in only where it reads naturally.
This generator looks at the actual pixels, not the filename, so it describes what is really in the image. Use it as a free image description generator for blog posts, product pages, or social media. No login required, and every option is written to be WCAG- and ADA-friendly. Use the single-image tab for one-off images, or the whole-page tab to write alt text for every image on a URL at once, then copy each result into your CMS.
Frequently asked questions
What is alt text?
Alt text is the written description of an image in your HTML. Screen readers speak it to visually impaired visitors, and search engines use it to understand what the image shows.
Does alt text help SEO?
Yes. Alt text is a ranking factor for Google Images and adds topical context to the page itself. Descriptive alt text on product and feature images is one of the cheapest on-page wins available.
How long should alt text be?
Under 125 characters. That is the point where many screen readers truncate. Say what the image shows, front-load the useful detail, and skip filler like "image of".
Can I generate alt text for every image on a page?
Yes. Switch to the "Whole page" tab, paste a URL, and this tool pulls the images off that page and writes alt text for each one, with copy buttons for every result.
Should every image have alt text?
Every meaningful image, yes. Purely decorative images should use an empty alt attribute (alt="") so screen readers skip them instead of announcing a filename.
Does this tool help with WCAG and ADA compliance?
Yes. Descriptive alt text is a core WCAG 2.x requirement (Success Criterion 1.1.1) and part of ADA web accessibility. This generator writes descriptions built to meet that standard, and reminds you to leave purely decorative images with an empty alt attribute.
This tool fixes one page. MetaMonster fixes your whole site.
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