Optimized Background Images
- December 7, 2025
Quick Reference
Element Code: ON-030
Issue: CSS background images that may need optimization or accessibility consideration
Impact: Performance if unoptimized, accessibility if informative content
Fix: Optimize file sizes, ensure decorative-only use
Detection: Manual CSS review, performance audits
What Is This Issue?
Background images set via CSS are commonly used for design purposes. While appropriate for decorative elements, they cannot have alt text and may be missed by search engines. Large background images can also hurt page performance.
Best Practices
- Decorative Only: Use CSS backgrounds only for decorative images
- Optimize Files: Compress background images for performance
- Consider Responsive: Use appropriate sizes for different devices
- Informative Content: Use img tags with alt for meaningful images
TL;DR (The Simple Version)
CSS background images can't have alt text and don't appear in image search. Use them only for decorative purposes and make sure they're optimized for fast loading.
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