How do I find images missing alt text on my page?

Paste your page URL, run the scan, review the flagged images, and fix the alt text in your CMS.

How does the tool find the images?

It fetches the page HTML and reads every img tag, recording the src and alt attribute of each. Images loaded by JavaScript after the page loads are not visible to this scan.

Is the page fetch safe?

Yes. Fetches use SSRF protection, a 10 second timeout and a 2 MB body cap. Only the image tags are extracted and nothing is stored.

SEO TOOLS · FREE ONLINE TOOL

Image ALT Checker

Find every image missing descriptive alt textImages are invisible to search engines unless you describe them. Alt text tells Google what a photo shows and tells screen readers what to announce. This checker scans every image on a page and flags missing, empty or weak alt text.

✓ Free to use✓ No sign-up✓ Ready in your browser

// IMAGE ALT CHECKER · GET STARTED

Use Image ALT Checker

Find every image missing descriptive alt text

// IMAGE ALT CHECKER · HOW IT WORKS

How to use the Image ALT Checker

Enter page URL

Enter the page URL you want to scan.

Scan images

Click "Check Images" to list every image on the page.

Add alt text

Fix the images flagged as missing alt text.

// IMAGE ALT CHECKER · ABOUT THIS TOOL

About the Image ALT Checker

Images without alt text are invisible to search engines and silent for screen-reader users. This tool scans the page HTML, lists every image with its alt attribute, and flags the ones missing it, so you get a concrete fix list.

The report also shows which images deliberately use empty alt text for decorative graphics, plus an overall coverage percentage so you can track improvement over time.

Where it helps most

Three places the payoff shows up.

Ecommerce catalogs

Ecommerce catalogs win when every product photo carries a proper description that pulls steady traffic from image search daily now.

Photo-heavy blogs

Blogs with heavy photography lift both SEO and accessibility scores with a single audit pass over their images today easily.

Compliance reviews

Missing alt text is one of the most common WCAG failures flagged in accessibility audits, and this scan finds every instance.

High-traffic images

Start with product listings, tutorials and infographics: the images most likely to rank and most encountered by screen readers first.

Writing better alt

What good alt text looks like.

Concise and literal

A concise, literal description of what the image shows, usually under 125 characters.

Skip filler phrases

Describe the subject and relevant detail; skip phrases like "image of" and never stuff keywords.

Decorative images

Purely decorative images should use empty alt so screen readers skip them entirely.

Image ALT Checker: built for trust

Fix the flagged rows with concise, honest descriptions, and your images start working twice: in search results and for every visitor.

// IMAGE ALT CHECKER · COMMON QUESTIONS

Image ALT Checker FAQs

Why does alt text matter for SEO?

Alt text tells search engines what an image depicts, which determines whether it can rank in image search. Descriptive alt text also gives surrounding context that supports the page's topical relevance.

What makes good alt text?

How long should alt text be?

Should decorative images have alt text?

Does the checker look at CSS background images?

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