Free Image Alt Text Checker
Check if your images have proper alt text for accessibility and SEO.
How does your site compare?
Sites with 100% alt text coverage receive 35% more traffic from Google Image search compared to sites with poor alt text.
Based on analysis of img elements for alt attribute presence, length, quality, and keyword usage.
All images have descriptive alt text of appropriate length with no keyword stuffing or generic file names.
How to fix this
Add descriptive alt text to all meaningful images and use empty alt="" for decorative images.
- 1Audit all images and add descriptive alt text to each meaningful image.
- 2Keep alt text concise: 5-15 words that describe the image content.
- 3Include relevant keywords naturally, but don't repeat the same keyword across multiple images.
- 4Use alt="" (empty) for purely decorative images like borders, spacers, and background elements.
- 5Avoid using file names as alt text (e.g., "IMG_1234.jpg") — write human-readable descriptions.
Quick tips by platform
WordPress: Set alt text when uploading images in the Media Library. Edit existing images via Media → Library → Edit.
Wix: Click any image → Settings → "What's in the image?" to add alt text.
Squarespace: Click an image → Design tab → Image alt text field.
Shopify: Edit product images in Products → All Products → Image alt text.
Frequently Asked Questions
What is image alt text?
Alt text (alternative text) is a description of an image that's read by screen readers for visually impaired users and displayed when images fail to load. It's also used by search engines to understand image content.
How should I write alt text?
Describe what the image shows concisely (5-15 words). Be specific: "Golden retriever playing fetch in a park" is better than "dog" or "image". Include relevant keywords naturally but don't stuff.
When should alt text be empty?
Use empty alt text (alt="") for purely decorative images like background patterns, spacers, or design elements. This tells screen readers to skip the image. Never omit the alt attribute entirely.
Does alt text affect SEO?
Yes. Alt text is a significant ranking factor for Google Image search. It also provides context for the page's overall content. Well-written alt text can drive traffic from image search results.
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