Free Alt Text Checker

Instantly scan any webpage for missing, empty, or poorly written image alt text. Alt text is critical for accessibility compliance, screen reader support, and image SEO. Our free checker finds every issue so you can fix them fast.

Use This Tool Free → No signup required · Instant results

What You Get

Everything included, completely free. No hidden limits on the report.

✓ Detects all images with missing alt attributes
✓ Flags empty or placeholder alt text values
✓ Identifies decorative images that should use empty alt
✓ Checks alt text length and keyword relevance
✓ Reports images missing from the accessibility tree
✓ Counts total images vs. images with proper alt text
✓ Highlights background images that may need text alternatives
✓ Provides alt text writing suggestions
✓ ADA and WCAG 2.1 compliance alignment
✓ Exportable report for development handoff

How It Works

Three simple steps to actionable insights.

1

Enter a URL

Paste any webpage URL into the tool. No account or login needed to get started.

2

Get Your Results

Our engine analyzes the page in seconds and delivers a detailed, easy-to-read report.

3

Take Action

Use the prioritized recommendations to fix issues and improve your rankings.

Frequently Asked Questions

Common questions about this tool answered.

Why does alt text matter for SEO?
Alt text helps search engines understand image content, which improves image search rankings and provides context for the surrounding content. Google has confirmed that alt text is one of the signals used for image search ranking.
What is considered good alt text?
Good alt text is descriptive, concise (typically under 125 characters), and accurately describes the image content. It should include relevant keywords naturally without keyword stuffing.
Is alt text required by law?
In many jurisdictions, websites must meet accessibility standards (such as WCAG 2.1 AA) that require meaningful alt text on informative images. Non-compliance can lead to ADA lawsuits in the United States.
How many images does the tool check at once?
The tool scans every image on the page you submit, whether there are 5 or 500. You get a complete report of all images and their alt text status in a single scan.
Should decorative images have alt text?
Decorative images that do not convey information should have an empty alt attribute (alt="") so screen readers skip them. Our tool helps you identify which images are decorative vs. informative.
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