Image Alt Text Checker
Paste a page's HTML source to find every image missing alt text.
Everything runs locally in your browser — nothing is sent anywhere. This tool checks the HTML you paste in, not a live URL.
Result
Paste HTML on the left to check image alt text.
How to use it
- 1View a page's source (Ctrl/Cmd+U) and copy it.
- 2Paste it into the box.
- 3Review the list of images missing alt text.
Is my file uploaded?
No — the check happens locally in your browser on the HTML you paste in.
FAQ
- Should every image have alt text?
- Purely decorative images can use an empty alt (alt=""), but any image conveying information should have descriptive alt text for accessibility and SEO.