Check Your Image
for Accessibility Issues
Test contrast, text readability, color blindness previews, and alt text suggestions for image accessibility.
Upload an image to check
PicFlow analyzes image contrast, text visibility, and color-blind previews. The visual checks run in your browser.
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Improve image accessibility before publishing
Images can create accessibility problems when text is too small, contrast is too low, important information depends only on color, or alt text is missing. PicFlow AI helps designers, developers, marketers, and site owners check image accessibility before uploading visuals to websites, landing pages, ecommerce stores, social posts, or blog articles.
Use the checker to estimate WCAG contrast, preview how colors may appear to users with different forms of color blindness, and draft alt text for screen readers. For web performance improvements, pair this tool with the Image SEO Analyzer, Image Compressor, and Responsive Image Generator.
Frequently asked questions
What does the image accessibility checker test?
It checks estimated text contrast, WCAG AA and AAA contrast thresholds, text visibility, color blindness previews, and optional alt text suggestions.
What is WCAG?
WCAG stands for Web Content Accessibility Guidelines. It defines accessibility recommendations such as minimum text contrast ratios for readable content.
Is color blindness simulation free?
Yes. PicFlow includes free browser-based color blindness previews for common vision simulation modes.
Does image accessibility processing happen locally?
Contrast checks and color blindness simulations run in your browser. Alt text generation uses the configured Claude Vision backend only when you request it.
How accurate is alt text generation?
AI-generated alt text is a helpful draft, but you should review it for context, accuracy, and the purpose of the image on your page.