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Image Alt Text Checker
Alt text serves screen-reader users and helps images rank in image search — but it is easy to forget across a whole page. Paste your HTML and get a per-image report of missing, empty and over-long alt attributes.
Use the tool
How to use the Image Alt Text Checker
- Paste the HTML of the page you want to audit.
- Adjust any optional settings to match your page, business or campaign.
- Click the button to generate your result instantly — nothing is uploaded; the tool runs in your browser.
- Copy the result, or download it as a file where that option appears, and paste it into your site, document or campaign.
Frequently asked questions
When is empty alt correct?
Only for purely decorative images. Screen readers skip empty alt, which is right for design flourishes and wrong for any informative image.
How long should alt text be?
Aim for a concise description under about 125 characters. Describe the image honestly — do not stuff keywords.
Does alt text help SEO?
Yes. It is a ranking factor for image search and helps search engines understand the page's topic.