Tool4SaaS

Screen Resolution

Detect screen width, height, pixel ratio, and viewport size. Fast offline tool for responsive design.

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About the author

Written and maintained by the Tool4SaaS team. Every tool runs locally in your browser and is tested in-house for accuracy. Last updated: .

Frequently asked questions

screen.width×height, window.innerWidth×innerHeight and devicePixelRatio.

No. Detection uses window.screen locally.

Yes, all processing happens locally in your browser and nothing is uploaded.

How to use Screen Resolution

  1. Open tool: Open the tool on the device you want to test.
  2. Read metrics: Values update live on resize.
  3. Copy: Copy dimensions for your bug report or CSS.