4K UHD Dimensions
Reference canvas: 3840 × 2160 pixels (16:9)
4K UHD is 3840 × 2160 pixels at 16:9. It contains four times as many pixels as 1920 × 1080 Full HD. It differs from 4096-pixel-wide cinema 4K, and it does not imply that every website visitor needs a full-size image.
Specifications
| Width | 3840px |
| Height | 2160px |
| Aspect Ratio | 16:9 |
| Platform | general |
| Category | standard |
Budget for the pixel count
Generate smaller delivery variants for ordinary page layouts. A large source is useful for detailed zoom or a large high-density display, but encoding quality, content, and format still determine the downloaded file size.
How to check the export
Check the final file’s pixel dimensions and crop, then preview it where it will be used. Compare text, edges, and subject detail at the displayed size. Keep an original so another crop or a less compressed export can be made without starting from the delivery copy.
Quick Tips
- → Keep an editable original and export a separate delivery copy.
- → Check text and subject framing at the actual display size.
- → Compare the final published result after any platform processing.
Related general Sizes
Frequently Asked Questions
Is this the only usable size?
The named raster has these exact pixel dimensions. Other sizes may be more appropriate for your layout or target display.
Will changing DPI make this image sharper online?
Changing DPI metadata alone does not add pixels. For web display, check the source pixel dimensions, rendered CSS size, device pixel density, and compression quality.