Screen Resolution Checker
Find out your exact screen resolution and browser viewport size in one glance. This tool reads the values your browser already exposes and shows your full screen dimensions, the usable viewport of this window, your device pixel ratio, and the color depth of your display. The numbers update live as you resize the window, which is useful when you are testing a responsive layout or need to report your setup for support. Screen resolution is the total pixels your monitor shows, while the viewport is the area the web page actually gets, and the two differ once you account for browser chrome and zoom. Everything is read locally in your browser, so nothing about your device is transmitted anywhere and no permissions are required.
How to use Screen Resolution Checker
- Open the tool in your browser.
- Read your screen size and viewport values.
- Check the pixel ratio and color depth.
- Resize the window to see the values update live.
Frequently asked questions
What does it show about my screen?
It shows your screen size, the browser viewport, the device pixel ratio and the color depth.
What is the difference between screen size and viewport?
Screen size is your full display resolution, while the viewport is the visible area inside the browser window, which is smaller when the window is not maximised.
Does it update when I resize the window?
Yes. The values update live as you resize the browser, so the viewport reading always matches the current window.
What is Screen Resolution Checker?
Find out your exact screen resolution and browser viewport size in one glance. This tool reads the values your browser already exposes and shows your full screen dimensions, the usable viewport of this window, your device pixel ratio, and the color depth of your display.
Is Screen Resolution Checker free to use?
Yes. Screen Resolution Checker is completely free, with no sign-up and no usage limits.
Does Screen Resolution Checker work in a web browser?
Yes. Screen Resolution Checker runs in any modern web browser. There is nothing to download or install.
Is my data private with Screen Resolution Checker?
Yes. Screen Resolution Checker runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
Badge
Link this tool from a README, doc or site. The badge links back to this page.
[](https://yourhack.ai/screen-resolution-checker)