Free Alt Text Generator
Paste an image URL to get accurate, accessible alt text under 125 characters, with the <img> HTML ready to paste.
AI-powered · free, no sign-up
How to use the free alt text generator
- 01
Paste the image's public URL.
- 02
Add context about the page it's on.
- 03
Copy the alt text or the full <img> tag.
Writing good alt text
Alt text describes an image for people using screen readers and for search engines, which can't see images. Good alt text says what matters about the image in context, in one short sentence. It doesn't start with "image of", and it doesn't stuff keywords.
Purely decorative images should have an empty alt (alt="") so screen readers skip them.
Tips for using the alt text generator
Describe what matters
The same photo needs different alt text on a recipe page and on a kitchen-design page.
Keep it under 125 characters
Screen readers handle short alt text best.
Skip decorative images
Purely decorative images should have empty alt text (alt="").
Find images missing alt
The AI SEO audit counts images without alt text on any page.
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Alt Text Generator FAQ
Does alt text help SEO?
Yes. It's how Google understands images for image search, and it adds relevance to the page. Accessibility is the main reason, though.
Which image formats work?
JPG, PNG, WebP and GIF at a public https:// URL.
Is it free?
Yes, within 15 AI tool runs per day.
What's the difference between alt text and a caption?
Captions are visible to everyone; alt text is read by screen readers and search engines in place of the image.
Should alt text include keywords?
Only when they naturally describe the image. Keyword-stuffed alt text hurts accessibility.
Why can't my image be read?
It must be a public JPG, PNG, WebP or GIF under 3 MB. Some sites block automated downloads.
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