SEO Tools

Image Alt Text Checker

Extract all `<img>` tags from a page or HTML snippet and check their alt text. Lists images with missing alt, empty alt (decorative), and those with present alt text, for both accessibility compliance and SEO purposes.

Free SEO analysis No sign-up required Instant results

Audit every image for alt text & performance

Fetch any live URL and instantly audit alt text quality, lazy loading, srcset/WebP usage, keyword integration, and layout shift attributes — across every image on the page.

Never stored Alt text quality Lazy load · srcset · WebP Keyword in alt
Paste HTML Paste full page source or the <body> section
Input Text Output Report Browser-only No upload by default

Features

  • Extracts all img elements from URL or HTML paste
  • Categorises: missing alt, empty alt, present alt
  • Shows image src and alt text for each
  • Calculates percentage with missing alt
  • Download image alt report as CSV
  • Fetches public URLs only

How to use it

  1. Enter a public URL or paste HTML.
  2. All images are extracted and categorised.
  3. See missing, empty, and present alt counts.
  4. Export the full report as CSV.

Use cases

  • Auditing page accessibility before a WCAG compliance review
  • Checking SEO image alt text coverage
  • Finding images that need alt text in a CMS content audit
  • Verifying images have appropriate alt text after migration

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.
See also

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Questions & answers

Frequently asked

Is empty alt the same as missing alt?

No. alt='' (empty string) is the correct way to mark decorative images (screen readers skip them. Missing alt is an accessibility error) screen readers read the src filename instead.

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.