Image Alt Text Checker
Free image alt text checker: find every image and flag missing or empty alt attributes.
Quick answer: enter your details below and click Check alt text — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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SEO & Webmaster
Enter your details below.
How to use
- Paste your page HTML.
- Click Check alt text.
- Write alt text for every flagged image.
About this tool
The Image Alt Text Checker lists every image tag in pasted HTML and flags missing or empty alt attributes — a common accessibility and SEO gap.
Frequently asked questions
What makes good alt text?
A short, specific description of the image's content or function — not a keyword list.
Should decorative images have alt text?
Give them empty alt (alt="") so screen readers skip them.