About Screenchord
Screenchord is a screen-size reference for people who build responsive interfaces — currently 97 devices across 10 brands, each with its CSS viewport, physical resolution, pixel ratio and copy-paste media queries.
Every spec is compiled independently from manufacturer spec sheets and verified so the math holds: physical resolution always equals viewport × pixel ratio. Each device page also draws the viewport at true CSS-pixel size on your screen, so a breakpoint stops being a number and becomes a width you can see.
Missing a device, or spotted a wrong number? Email howdy@screenchord.app — corrections ship within days.