Paste page HTML
Use page source or copied rendered HTML. Nothing is fetched or executed.
Image Alt Text Checker
Inspect image alt attributes in pasted HTML, separating missing descriptions from empty alt text that needs contextual review.
Free
No sign-up
Runs in your browser
Result
Your result will appear here
Review report limits before making changes.
What is Image Alt Text Checker?
Image Alt Text Checker is a free online seo tool from GigaTools. Inspect image alt attributes in pasted HTML, separating missing descriptions from empty alt text that needs contextual review. It runs entirely in your web browser, so nothing is uploaded and it works on any device without installing software.
Common uses
- Find missing image text alternatives before publishing.
- Review image-only links and image buttons.
How it works
How to use Image Alt Text Checker
Review each image
Check img, image inputs and image-map areas for missing, empty and filename-like alt text.
Fix in context
Describe informative images and review whether an empty alt is appropriate for decorative images.
FAQ
Good to know
How do I use Image Alt Text Checker?
1. Paste page HTML: Use page source or copied rendered HTML. Nothing is fetched or executed. 2. Review each image: Check img, image inputs and image-map areas for missing, empty and filename-like alt text. 3. Fix in context: Describe informative images and review whether an empty alt is appropriate for decorative images.
Is empty alt always an error?
No. Decorative images often need alt="". The tool marks empty alt for review, especially on linked images and controls; it cannot decide whether an image is decorative.
Does it prove accessibility or SEO quality?
No. Presence is not accuracy. Review image purpose, nearby text and accessible naming manually. CSS backgrounds, SVG and JavaScript-generated images absent from your input are outside this check.
Are images loaded?
No. HTML is parsed in an inert template. The report shows source strings without requesting images or executing scripts.
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