Rules
Broken Images
Checks for images returning 404 errors
Figure Captions
Checks for proper use of figure and figcaption elements
Image Alt Text
Validates image alt attributes
Image Dimensions
Checks for width/height attributes (prevents CLS)
Image File Size Too Large
Checks for image files that exceed recommended size limits
Image Filename Quality
Checks for descriptive image filenames
Image Optimization
Checks for image optimization indicators
Inline SVG Size
Checks for large inline SVGs bloating HTML
Lazy Loading
Checks for lazy loading on below-fold images
Modern Image Formats
Checks for modern image formats like WebP or AVIF
Offscreen Image Lazy Loading
Checks if offscreen images use lazy loading
Picture Element Validation
Validates
<picture> elements have required <img> fallbackResponsive Image Size
Checks if images are sized appropriately for their display size
Responsive Images
Checks for responsive images with srcset attribute
Disable All Images Rules
squirrel.toml