Free Image Alt Text Checker: Find Every Image Missing Alt Text
Enter a page URL. We count every image on it, report how many have missing or empty alt text, and list the file names so you know which to fix.
Free with a Brainito account. No credit card required.
example-store.com/shop
Example3 of 24 images are missing alt text.
- Images on page24
- Missing alt text3 (hero.jpg, bag-2.png, …)
- How to fixAdd 5-15 word alt text
- How to fixEmpty alt only for decor
Example result with sample data. Yours uses live data for your inputs.
How it works
From your input to a prioritised list of fixes in under a minute.
- Step 1
Enter your details
Your website, business or the item you want checked. Nothing to install.
- Step 2
We run live checks
Brainito fetches live data and tests it against the rules that matter.
- Step 3
Fix what matters first
Clear results with what to fix, in order of impact, and where to go next.
What you get
What the result tells you, and why it is worth the minute it takes.
Total Image Count
See how many images the page contains, so you know the size of the job before you start writing alt text.
Missing Alt Text Graded
Get a pass, warn or fail grade based on how many images on the page have absent or empty alt attributes.
File Names to Fix
Up to ten image file names are listed under the count, so you can find each one in your media library quickly.
The guide
What the image alt text checker does, how to use it, and what to do with the result.
An alt text checker scans the images on a web page and shows which ones have no alt text. Enter a page URL and our checker fetches the page, renders it first if the content loads with JavaScript, and reads every img tag. You get the total number of images, the number missing alt text, and the file names of up to ten of those images, so you can find them in your site editor. An image counts as missing when its alt attribute is absent or empty. Each result comes with plain advice on writing the fix.
How to Check Alt Text on a Website
Paste the URL of the page you want to test, such as a home page, product page or blog post, and run the check. Our checker fetches that single page and looks at every img element in its HTML. The banner at the top gives the result in one line, for example 3 of 24 images are missing alt text, or All images have alt text. Below it, Images on page gives the total and Missing alt text gives the count, with the file names underneath. To cover a whole site, check your main templates one at a time: one product page usually tells you about every product page built from the same template. Results for the same URL are saved for up to seven days.
How to Read the Alt Text Check Results
The Missing alt text row passes at zero, warns at one or two images and fails at three or more. Under the count you see up to ten image file names, trimmed of query strings, which is usually enough to find each image in your content system or media library. An image is counted as missing when it has no alt attribute or when the attribute is empty. That second case matters, because alt="" is the correct markup for purely decorative images such as dividers or background shapes, so some images in the list may already be right. The checker reports whether alt text exists, not whether it is any good, so a file name such as IMG_2041.jpg used as alt text will still pass.
What Is Alt Text and Why It Matters for SEO
Alt text is the alt attribute on an image tag: a short written description of what the image shows. Screen readers read it aloud to people who cannot see the image, and browsers display it when an image fails to load. Search engines also use it, along with the file name and the text around the image, to understand what a picture is about, which helps it appear in image search and adds context to the page. Accessibility guidelines such as WCAG ask for a text alternative for every image that carries meaning. Missing alt text is a quick fix with a real payoff: the page becomes usable for more people and easier for search engines to read.
How to Write Good Alt Text: Examples
Describe what the image shows and why it is on the page, in plain words. Aim for roughly 5 to 15 words and put the subject first. Skip phrases like image of or picture of, since screen readers already announce that it is an image. Use a keyword only when it truly describes the picture. Three examples: a product photo might read Brown leather weekend bag with brass buckles, open to show the lining. A team photo might read Bloom Bakery staff in aprons outside the shop on opening day. A chart might read Bar chart of monthly orders rising from January to June. For a decorative divider, keep the alt attribute empty so screen readers skip it.
Common Alt Text Mistakes to Avoid
Using the file name, such as DSC_0042 or hero-final-v2, gives screen reader users nothing to go on. Repeating the same alt text on every product image hides the differences between colours and angles. Stuffing a list of keywords reads as spam and makes the page harder to use. For an image that works as a link, describe where the link goes, not only the picture. Logos should name the brand rather than say logo. Icons, buttons and charts drawn as images need alt text too. Finally, when the checker finds missing alt text on many pages, look at the theme or template first, because a single template fix often clears the same gap on every page that uses it.
Fix Missing Alt Text Faster
Start with the images the checker names, beginning with product photos, charts and anything that carries information. Open each one in your content system or media library and fill in the alt field; most platforms, including WordPress and Shopify, have a dedicated alt text box. If you have many images to describe, the Image Alt Text Generator takes a short description of each image, one per line, and writes 5 to 15 word alt text for each, working in an optional keyword only where it fits naturally. Paste the results into your alt fields. Then move on to the next template, and pair this check with the Heading Structure Checker and the Meta and Title Checker to cover the rest of your on-page basics.
Frequently asked questions
Something else? Email support@brainito.com
How do I check the alt text of images on a website?
Enter the page URL in the alt text checker. It reads every img tag on that page and reports the total number of images, how many are missing alt text, and the file names of up to ten of them, plus advice on fixing them.
Is the alt text checker free?
Yes. The alt text checker is free with a Brainito account and uses 0 credits per check. Enter a page URL and you see the image count, the missing alt text count and the file names in seconds.
What counts as missing alt text?
An img tag with no alt attribute, or with an alt attribute that is empty or only spaces. Empty alt is correct for purely decorative images, so review the listed file names before you add text to every one of them.
Does the checker judge whether my alt text is good?
No. It checks whether alt text exists, not its quality. Alt text that is a file name or a list of keywords will pass. Read your existing alt text against the examples on this page, or rewrite it with the Image Alt Text Generator.
How long should alt text be?
Keep it short and specific, roughly 5 to 15 words, which is usually one plain sentence. Lead with the subject, include the detail that matters on that page, and skip phrases like image of, since screen readers already announce the image.
Can I check alt text across a whole website at once?
No. Each check covers one page. Most sites build pages from a few templates, so check one page of each type, such as a product page, a blog post and the home page, to find gaps that repeat across the site.
Where to go from here
The image alt text checker answers one question. These are the next ones worth asking.
Find every image on your page that needs alt text
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