| name | retina-display |
| description | Use when reviewing image assets, markup, and CDN or build transforms related to Support high-DPI retina displays. Check encoded size, rendered size, loading strategy, and above-the-fold impact together. |
| metadata | {"category":"images","priority":"medium","difficulty":"intermediate","estimatedTime":"15","source":"frontendchecklist.io","url":"https://frontendchecklist.io/en/rules/images/retina-display"} |
Support high-DPI retina displays
Standard images look blurry on retina displays (2x, 3x pixel density)—high-resolution assets ensure sharp visuals on modern devices.
Quick Reference
- Provide 2x and 3x images for high-DPI displays
- Use srcset with x descriptors for fixed-size images
- Use srcset with w descriptors for responsive images
- CSS background-image: use image-set() or media queries
Check
Check if high-resolution images are provided for retina displays (2x, 3x).
Fix
Add retina-ready images using srcset or CSS image-set for high-DPI displays.
Explain
Explain how retina images ensure sharp visuals on high-density displays.
Code Review
Review image assets, markup, and delivery configuration related to Support high-DPI retina displays. Flag exact files or components where format choice, sizing, or loading behavior violates the rule, and describe how to confirm the fix in DevTools.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/en/rules/images/retina-display
