SEO Tools

Image Alt Text Checker

Use Image Alt Text Checker to check images in page HTML for alt attributes. The tool produces an image accessibility and SEO report. Missing alt attributes are flagged as fails. Empty alt on decorative images is acceptable.

Free SEO analysis No sign-up required Instant results

How to use it

  1. 1 Paste the HTML source of a page into the input panel.
  2. 2 Click Check HTML to run the analysis in your browser.
  3. 3 Review the report sections.
  4. 4 Export as JSON or copy the summary.

Use cases

  • Audit on-page SEO before publishing or updating a page
  • Check social sharing metadata before a campaign
  • Verify heading structure and schema markup after a CMS change

Limitations

  • JavaScript-rendered content is not evaluated — only the static HTML response is analysed.
  • Paste the raw HTML source. Relative paths may not resolve correctly without the original base URL.
  • Missing alt attributes are flagged as fails. Empty alt on decorative images is acceptable.

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FAQ

Does Image Alt Text Checker upload my data?

Your file or text is processed in your browser and is not uploaded.

What does Image Alt Text Checker check?

It produces an image accessibility and SEO report. Missing alt attributes are flagged as fails. Empty alt on decorative images is acceptable.

Does this replace Google Search Console?

No. This tool reads static HTML and provides a quick informational check. For authoritative indexing data and crawl reports, use Google Search Console.