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.
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---
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/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/rules/images/retina-display
