Free Accessibility Audit | ADA / WCAG
Image Alt Tag Checker
Scan a public webpage with our image alt tag checker to find images with missing, empty, or weak alt text. Use the report to improve accessibility, WCAG coverage, and image SEO.
What Does the Image Alt Tag Checker Find?
This tool audits image tags on a webpage and flags missing, empty, or weak alt text so you can improve accessibility, WCAG coverage, and image SEO faster.
Missing alt attributes
Find informative images with no alt attribute at all, which screen readers and search engines cannot interpret properly.
Empty alt text
Spot images using alt="" when the image still conveys meaningful content that should be described.
Weak alt text
Catch generic labels like image, photo, logo, icon, or filename-style alt text that does not describe the image.
How to Use the Image Alt Tag Checker
Log in to your account.
Paste the public URL of the page you want to audit.
Run the scan and review missing, empty, and weak alt text findings.
Fix the flagged images and rescan to confirm your accessibility score improves.
Related Alt Text Tools and Guides
Image Alt Tag Checker FAQ
What does the Image Alt Tag Checker do?
It scans the HTML of a public webpage and lists image tags with missing alt attributes, empty alt text, or weak alt text that is too generic to be useful.
What counts as weak alt text?
Weak alt text includes generic words like image, photo, logo, or icon, filename-style values such as hero-banner.jpg, and descriptions that do not explain what the image shows.
Does this check every image on a page?
It checks the image tags returned in the page HTML. Images loaded later by JavaScript may not appear in the scan unless they are present in the initial HTML response.
Do I need to log in to use it?
Yes. You need to log in before scanning a page so the tool can run the audit for your account.
Is this an ADA or WCAG checker?
It helps you find common alt text issues that affect accessibility and WCAG image requirements, but it is a focused alt text audit rather than a full website compliance scan.
What should I do after finding issues?
Fix missing or weak alt text on informative images, keep decorative images empty with alt="", and use an alt text generator or integration to create better descriptions at scale.
Can fixing alt text help SEO?
Yes. Better alt text helps search engines understand image content and improves accessibility, which supports stronger page quality and image discovery.
Can I generate alt text for the images I find?
Yes. Use the Free Alt Text Generator or one of our platform integrations to create concise alt text for the images flagged in your report.