Image Alt Text Checker
SEO.io
Check all images on a page for missing alt text. Improve accessibility and SEO.Updated 2026-03-20
Frequently Asked Questions
What does it check?
All images for missing alt text attributes.
Why is alt text important?
Improves accessibility and image SEO.
Free?
Yes, completely free.
How to Use
- Review score and issue breakdown
- Re-run after making changes
- Enter your URL or paste content
- Follow prioritized recommendations
FAQ
Does it affect my site?
No. The tool only reads your page — it makes no changes to your site.
How do I fix the issues found?
Each issue has a specific recommendation. Follow them in priority order.
Can I check competitor pages?
Yes, analyze any publicly accessible URL to understand what top pages do right.
Does it check what Google checks?
Analyzes factors known to influence rankings based on Google documentation and research.
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