Image Alt Text Checker
Find images missing alt text for accessibility and SEO.
Check images for missing alt text instantly. Free alt checker with count and list of images without alt.
Calculator Inputs
About Alt Checker
Find images missing alt text for accessibility and SEO.
Checks each for alt attribute.
Where it is used
Pre-publish checks, accessibility audit.
How to use the Alt Checker
- HTML Source — enter the value (e.g. <img src="photo.jpg" alt="Sunset">).
- Calculate — press the Calculate button to see the result instantly above.
Formula
Count <img> tags and those without non-empty alt.
Examples
Example
html:<img src="a.jpg" alt="Cat"><img src="b.jpg">
Result: 2 images, 1 missing alt
Frequently Asked Questions
- Empty alt vs missing?
- Empty alt (alt="") is intentional decorative; missing is error.