Audit & Analysis · Free tool

Image ALT Checker — Find Images Missing ALT Text

Check any web page for images missing ALT text. See every image and its ALT attribute, and fix the gaps that hurt SEO and accessibility. Free, no login.

Step by step

How to use the Image ALT Checker

01Enter the page url
02Click "Run Image ALT Checker" — it's free and instant
03Review your results on screen and download the PDF/Excel report

What is the Image ALT Checker?

ALT text is the short description added to an image with the alt attribute. This checker scans every <img> on a page and lists each image with its ALT text, flagging images where the attribute is missing or empty so you can fix them in one pass.

Why it matters for SEO

Search engines cannot see pictures — they read ALT text to understand them, which is how images rank in Google Images and how they add relevance to the page. ALT text is also what screen readers announce to visually impaired visitors, so missing ALT text is both an SEO gap and an accessibility failure.

How to read your Image ALT Checker results

Every meaningful image — product photos, diagrams, screenshots, infographics — should have a short, specific description. Purely decorative images (dividers, background shapes) can use an empty alt="" on purpose. If the same generic ALT such as “image” repeats across many images, rewrite them to describe each one.

Expert tips

Describe what is in the image in under 125 characters.
Include a keyword only when it genuinely describes the image.
Use descriptive file names too — red-running-shoes.jpg beats IMG_2041.jpg.
Fix templates (logo, product grid) once and every page improves.

Limitations

Checks only the single URL you enter, as our server fetches it. It does not crawl the whole site, run JavaScript, or see pages behind a login.

Why use our Image ALT Checker?

Completely free — use Image ALT Checker as many times as you want
No login or registration needed to see results
Download the report as PDF or Excel with a free account
Works on any device — desktop, tablet or mobile

Frequently asked questions

A text alternative for an image, written in the alt attribute of the img tag. Search engines and screen readers use it to understand the image.

Every meaningful image should. Decorative images should have an empty alt attribute so screen readers skip them.

It helps images rank in image search and adds relevance to the page. It is also an accessibility requirement under WCAG.

Short and specific — usually one sentence, under about 125 characters.

Yes. Image ALT Checker is 100% free with unlimited usage. You can run it as often as you like without paying anything.

No login is required to use Image ALT Checker and see your results. You only need a free account if you want to download reports as PDF/Excel or save your history.