SEO Tools
Image Alt Text Checker
Check a page for images missing alt text.
Enter a URL to check how many images are missing alt text.
JustChecker tracks your on-page SEO signals continuously.
Frequently Asked Questions
Alt text is also how search engines understand image content for image search indexing, and it displays as fallback text if an image fails to load for any visitor, regardless of ability.
Purely decorative images should use an empty alt attribute (alt="") specifically so screen readers skip over them entirely, rather than announcing irrelevant filler that adds no value for the listener.
Good alt text concisely and accurately describes what the image actually shows or conveys in context; bad alt text is either missing entirely, generic ("image1.jpg"), or stuffed with unrelated keywords purely for SEO manipulation.
No - search engines are well-attuned to identifying keyword-stuffed, inauthentic alt text, and it can actively hurt rather than help, on top of providing a genuinely poor experience for screen reader users.
Every meaningful, content-conveying image should have it - the count varies entirely by page, but a page with several images missing alt text entirely represents a real, fixable accessibility and SEO gap worth addressing.