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Device
Family · DPR · PPI
Desktop display reference
Monitor Screen Sizes
Use monitor screen size references for desktop responsive QA, design-system breakpoints, viewing-distance context, and display comparison workflows.
Monitor viewport table
Use these values as starting points for responsive testing. Always verify final behavior in the actual browser and orientation you are targeting.
Filter device database
Search the full viewport reference set, then narrow results by device family, brand, type, DPR, and CSS viewport width.
Advanced filters
5 devices shown from 5 records.
Swipe horizontally to view all viewport, resolution, DPR, PPI, source, and notes columns.
| Device | Family | Type | CSS viewport | Resolution | DPR | PPI | Source | Notes |
|---|---|---|---|---|---|---|---|---|
|
24-inch 1080p monitor
Generic · Reference
|
Monitor | Monitor | 1920 × 1080 | 1920 × 1080 | 1 | 92 | Reference monitor resolution Reference | Common office and gaming monitor baseline; browser viewport is smaller when windowed. |
|
27-inch 4K monitor
Generic · Reference
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Monitor | Monitor | 3840 × 2160 | 3840 × 2160 | 1 | 163 | Reference monitor resolution Reference | High-density desktop display reference; OS scaling often changes CSS viewport size. |
|
27-inch QHD monitor
Generic · Reference
|
Monitor | Monitor | 2560 × 1440 | 2560 × 1440 | 1 | 109 | Reference monitor resolution Reference | Common design and productivity monitor reference. |
|
32-inch 4K monitor
Generic · Reference
|
Monitor | Monitor | 3840 × 2160 | 3840 × 2160 | 1 | 138 | Reference monitor resolution Reference | Large 4K desktop display reference for wide layouts and visual comparison. |
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49-inch ultrawide monitor
Generic · Reference
|
Monitor | Ultrawide monitor | 5120 × 1440 | 5120 × 1440 | 1 | 109 | Reference ultrawide resolution Reference | Super-ultrawide reference useful for dashboard and app-layout testing. |
| No device records match these filters. Reset filters or try a broader search. | ||||||||
Values are practical references and can vary by browser, zoom, OS scaling, display mode, and orientation.
Visual comparison
Compare viewport shapes
Pick two records and compare CSS viewport or physical resolution shapes. The drawing is scaled for relative size, so it is useful for layout intuition before opening the detailed records.
Left device
Right device
CSS viewport comparison
Compare two devices to see the relative area.
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Device
Family · DPR · PPI
Use CSS viewport first
Responsive breakpoints usually react to CSS viewport width, not physical display resolution.
Record DPR
DPR helps explain why a high-resolution device can still report a smaller CSS viewport.
Check orientation
Portrait, landscape, split-view, and browser UI can all change the usable viewport.
Source notes
Use these records as starting points
This viewport reference database combines manufacturer display specifications, practical CSS viewport references, browser testing notes, and normalized QA-friendly values. Physical resolution, diagonal, and PPI are hardware-level references; CSS viewport values can change with browser UI, zoom, OS display scaling, orientation, split view, and responsive mode. Use these records as practical testing baselines and verify critical layouts on real browsers.
Manufacturer specifications
Use official Apple, Google, Samsung, monitor, and TV specification pages for physical resolution, diagonal size, and PPI/marketing display references.
Browser viewport testing
Use live browser measurements from Safari, Chrome, Firefox, Edge, device simulators, and real devices to validate CSS viewport width and height.
CSS/device behavior documentation
Use browser documentation for viewport, visualViewport, DPR, and responsive behavior when explaining why live values differ from physical specs.
Quarterly editorial review
Review newly released devices, OS display scaling changes, and browser UI changes before expanding indexed device pages.