Alt Tag Checker SEO Tool

Identify images missing alt attributes in HTML code to improve accessibility and SEO compliance. This accessibility audit tool scans HTML for images, lists current alt text, identifies empty or missing alt tags, and provides improvement suggestions with exportable reports. Essential for accessibility compliance, SEO optimization, web development quality assurance, and improving user experience for screen readers and assistive technologies.
Image Scanning Missing Alt Detection Current Alt Display Accessibility Check
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Alt Tag Checker...

Identify images missing alt attributes in HTML code to improve accessibility and SEO compliance. This accessibility audit tool scans HTML for images, li...

10 images 3 without alt text
HTML Input
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Analysis Results

Upload HTML code or enter a URL to start analysis

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

Why are alt tags important for SEO and accessibility?
Alt tags help screen readers describe images to visually impaired users and provide context to search engines for image indexing. They also display when images fail to load, improving user experience and accessibility compliance.
What should I write in alt text?
Write concise, descriptive text that explains the image content and context. Focus on what the image shows and its purpose on the page. Avoid starting with "image of" or "picture of" as screen readers already announce it's an image.
Should decorative images have alt tags?
Decorative images that don't add content should have empty alt attributes (alt="") or use CSS background images instead. This tells screen readers to skip them, reducing unnecessary noise for users with visual impairments.
How long should alt text be?
Keep alt text concise, typically under 125 characters, as screen readers may cut off longer descriptions. If complex images need longer descriptions, consider using the longdesc attribute or providing detailed descriptions in surrounding text.
Do all images need unique alt text?
Yes, each image should have unique alt text that describes its specific content and context. Avoid generic phrases like "image" or repeated text. If images are truly identical, they should serve the same purpose and can have similar alt text.

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