SEO tools
Image Alt Text Auditor
Find images in pasted HTML with missing, empty or descriptive alt attributes.
- Free to use · no account required
- Processes input in your browser
- Review and copy your results
Enter your details
Enter your information and choose Analyze / Generate.
Step by step
How to use Image Alt Text Auditor
Prepare your input
Copy HTML containing the img elements you want to review.
Run the tool
Paste the source and select Analyze / Generate.
Check and use the result
Check missing and empty alt attributes, then inspect the meaning of each non-empty description.
How this tool works
Paste HTML containing img elements. Review images with missing, empty and non-empty alt attributes. Compare each result with the image’s purpose in context.
Understand the results
Empty alt text can be correct for a decorative image. Non-empty alt text is not automatically meaningful; inspect it manually. CSS backgrounds and images added after JavaScript runs are outside the pasted source.
Good to know
Frequently asked questions
Is an empty alt attribute always wrong?
No. Empty alt can be correct for a decorative image. Informative images need meaningful alternatives appropriate to the surrounding content.
Is Image Alt Text Auditor free?
Yes. This public tool does not require an account, payment or subscription.
Where is my input processed?
The tool-specific processing runs in your browser. Website delivery still involves hosting requests; see the privacy policy for details. Read the privacy policy.
Should every image have alt text?
Every image needs an alt attribute. Informative images need a short description of what they show. Purely decorative images should use an empty alt=”” so screen readers skip them.
How long should alt text be?
Usually one short sentence, under about 125 characters. Describe what matters in context and don’t start with “image of”.
Why use this tool
Find images missing alt text in seconds
Alt text makes images understandable to blind and low-vision visitors and helps Google Images understand what a picture shows. Paste a page’s HTML to list every image with missing, empty or filled alt text. See the W3C alt text decision tree for edge cases.
Your privacy: The HTML is analysed in your browser and never sent to ToolTama.
Related: convert image to WebP, heading structure checker, meta tag analyzer.