Device Information

How to use this device information tool

  1. Just open this page — no input needed.
  2. Every card reads directly from your browser's own APIs.
  3. Useful for quickly reporting a bug or checking browser capabilities.

Is any of this sent to a server?

No — everything shown here comes from JavaScript APIs available in your own browser (screen, navigator, Intl) and is displayed only on your screen. Nothing is transmitted or logged anywhere.

Why does my user agent string look so long and confusing?

For historical compatibility reasons, browsers include multiple engine and version identifiers in the user agent — a quirky legacy of the "browser wars" of the 1990s and 2000s that never fully went away.

Why is pixel ratio sometimes 2 or 3?

High-density ("Retina") screens pack more physical pixels into the same space, so a ratio of 2 means the screen uses 2x2 physical pixels for every 1 CSS pixel, producing sharper images and text.