🖼️Free
Free Alt Text Checker
Check every image on a page for alt text. Find missing, empty, too long or file-name style alt text and fix it for SEO and accessibility.
What this tool checks
- ✓Lists every image
- ✓Missing and empty alt text
- ✓Alt text that is just a file name
- ✓Alt text that is far too long
Questions people ask
What is alt text?+
A short description of an image, read aloud to people who cannot see it and used by Google to understand the picture.
Do decorative images need alt text?+
They should have an empty alt (alt="") so screen readers skip them. Images that carry meaning need a real description.
How long should alt text be?+
One short sentence, under about 125 characters. Describe what is in the picture, not "image of".
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Prophecius checks every page of your site, connects your Google Search Console, tells you what to fix in plain words, and runs an AI assistant that answers your customers on your website and WhatsApp.