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On-Page SEO

Image Alt Tag Checker

Scan your webpage to ensure all images have properly defined alt tags.

Image Alt Tag Checker

About this tool

Check if all images on your webpage have alt text attributes. Alt tags improve accessibility for visually impaired users and help search engines understand your image content.

No signup, no catch

What the free tools actually do

Seven of them run in the browser and ask for nothing. The eighth asks for a domain and an email, because it has to send you a report.

  • best AI visibility trackerDaily
    ChatGPT
    Gemini
    Perplexity
    Claude

    A real check, right now. Four models asked your question, with the answers they gave back.

  • Prompt ideas
    what is AEO2.4k
    best AEO tools1.1k
    AEO vs SEO860

    Prompt research, free. A sample of the ideas the paid research page ranks.

  • A crawler that only reads. It fetches your pages the way an AI crawler would and never writes.

  • Generators
    llms.txtGenerate
    FAQ schemaGenerate
    Article schemaGenerate

    Copy-paste output. llms.txt and schema markup you can paste straight into the page.

  • 30sto a visibility report on your domain

    Use it in the pitch. Screenshot it, export it. White-label and weekly is the paid plan.

Everything you're wondering

Or ask us anything at hello@zerorank.ai

What are image alt tags?

Alt tags (alternative text) are HTML attributes that describe an image's content. They are read by screen readers for visually impaired users and displayed when an image fails to load.

How do alt tags help SEO?

Alt tags help search engines understand image content, which improves image search rankings. They also contribute to overall page relevance for your target keywords and are essential for web accessibility compliance.