Count how many images on your page are missing alt text, and see samples of the ones that are. Accessibility and image search read the same attribute.
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Runs the full audit on your live site. Your report opens in your dashboard.
This counts every img element on the page, counts how many have no alt attribute or an empty one, and reports the share along with samples of the offending sources so you can find them in the template. An empty alt is treated as missing here, which is worth knowing, because on a genuinely decorative image an empty alt is the correct markup rather than an oversight.
Alt text is the only description of an image that a machine ever gets. A screen reader reads it aloud, image search indexes on it, and a crawler that cannot see pictures uses it to understand what a page contains. On a product or portfolio page, where the images carry most of the meaning, missing alt text means the most important part of the page is invisible to everything except a human with working vision.
More than half the images undescribed is scored as a warning, and the report names the files so the fix is targeted rather than a sweep of the whole site. Describe the image in a sentence a person would use, do not start with "image of", and leave the alt empty and deliberate on decorative elements. Automatically generated alt text that repeats the file name is worse than nothing: it passes the check and helps no one.
This page leads with one dimension, and the audit behind it is the whole engine: Visibility100x scores36 checks on every page it crawls, across crawlability, on page SEO, structured data, AI and GEO, content, media, performance and security. Running it here gives you the same report a paying customer gets, on a free account with no card.
A short plain sentence describing what the image shows and why it is there. Skip "image of". If the image contains text that matters, put that text in the alt. Aim to be useful to someone who cannot see it rather than to a crawler.
No. Give them an empty alt attribute so assistive technology skips them. Omitting the attribute entirely is different: that makes a screen reader announce the file name, which is the worst of both.
It is how images rank in image search and it adds context to the page. It is not a place to list keywords. Stuffed alt text is easy to detect, and it makes the page worse for the audience the attribute exists to serve.
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