Check the alt text of every image on a page, with a guide to writing good alt text.
In the modern digital landscape, web accessibility and search engine optimization go hand in hand. Every image on your website should include descriptive alternative text to ensure that visually impaired visitors using screen readers can fully understand your visual content. Furthermore, search engine crawlers rely on these descriptions to properly index your images. Our free image alt text checker is designed to help webmasters, developers, and content creators quickly audit their web pages and identify missing or inadequate alt tags.
Alternative text serves two vital functions on any website. From an accessibility standpoint, it breaks down barriers for users who cannot see the screen, translating visual information into meaningful audio descriptions. From an SEO perspective, search engines use alt attributes to determine the subject matter of an image, which can help your site rank higher in image search results. Without proper tags, you risk missing out on valuable organic traffic and potentially failing WCAG compliance standards.
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A strong alt description is concise, relevant, and accurately describes the function or appearance of the image without stuffing keywords unnecessarily. Aim for under 125 characters when possible.