Content and accessibility

Free Alt Tag Checker

Use our free alt tag checker to find images on a page that are missing alt text. Enter any web address below and get your result in seconds, with plain-English fixes.

Free. You see the verdict at once; add your name and email to read the full result. We only read what is public on the page.

What this alt tag checker checks

Scans every image on a page and reports which ones have no alt attribute, an empty alt or an alt that is far too long.

The alt tag checker parses every <img> on the page and sorts the images into four groups: alt present and sensible, alt missing, alt empty, and alt over about 125 characters. It lists the file name of each problem image so you can find it in your editor or CMS.

Why use a alt tag checker

Alt text lets people using screen readers understand your images and gives search engines context for image search. Missing alt text is one of the most common accessibility failures.

Web owners with product galleries, property listings, restaurant menus and portfolios, plus anyone worried about accessibility complaints. The alt tag checker is also useful before a redesign to see how many images need descriptions.

How to use the alt tag checker

  1. Paste the full address of the page you want to test into the box at the top of this page. Use the exact page you care about, such as your home page or a service page, because each page can give a different alt tag checker result.
  2. Press the button and wait a few seconds. The tool fetches the page the way a visitor and a search engine would, then runs its checks. Nothing is installed, and you only need to enter your name and email to read the full result.
  3. Read the verdict and the plain-English notes, make the changes listed under the fixes, then run the test again to confirm the problem is gone. Keep a note of the date and the result so you can show progress.

How to read your alt tag checker results

  • Pass means every image has alt text or is deliberately marked decorative with an empty alt.
  • Warning means some alt values are very long or look like file names.
  • Fail means images with no alt attribute at all, which screen readers read out as the file name.

How to fix problems the alt tag checker finds

  • Describe what each meaningful image shows in a short phrase.
  • Use alt="" for decorative images.
  • Keep alt text under about 125 characters.

Common mistakes

  • Writing "image of" or "picture of" at the start, which screen readers already announce.
  • Stuffing keywords into alt text instead of describing the picture.
  • Leaving logos and icons without alt or with an empty alt when they are links.

Want everything fixed in one go? Our free website grader checks 40+ things at once, and you can ask for a free quote if you would rather have a person do it.

Alt tag checker for Cayman Islands websites

Cayman sites lean on photography: beaches, villas, boats, dive sites and food. Describe the image honestly, such as "Snorkellers at Stingray City, Grand Cayman". That helps blind visitors, helps Google Images connect your photo to local searches and gives your alt tag checker result a clean pass.

Ranking in the Cayman Islands is a local contest: Google treats a .ky domain as aimed at the territory, and it rewards pages that name the places people search for, such as George Town, Grand Cayman, West Bay and Seven Mile Beach. After you act on your alt tag checker result, work through our SEO guides for Cayman businesses, read how the WebGuru features fit together, or see the pricing for the full report.

Cayman Islands local SEO checklist

  • Name the place in your headings and first paragraph: George Town, Grand Cayman, West Bay, Cayman Brac or Little Cayman, whichever you serve.
  • Keep your business name, address and phone number identical on your website, Google Business Profile, Facebook page and local directories.
  • Use a .ky domain where you can. Google treats country-code domains as a signal that your audience is in that country.
  • Add a Google Business Profile, ask happy customers for reviews and answer every review.
  • Write for local questions, such as hurricane preparation, work permits or ferry times, in the words your customers would use.

Further reading

Frequently asked questions

What is a good alt text?

A short, specific description of what the image shows, written for someone who cannot see it.

Should decorative images have alt text?

They should have an empty alt (alt="") so screen readers skip them.

Does alt text help SEO?

It helps Google understand an image and can bring traffic from image search. It is not a shortcut to rankings, so write it for people first.

What about background images in CSS?

Decorative CSS backgrounds need no alt text. If an image carries information, use an <img> with alt instead.

Related free SEO tools

More content and accessibility tools: print stylesheet checker.

See all 46 free SEO tools