About the Screen Resolution Checker
Your screen resolution is shown above in physical pixels: the true number of pixels on the panel. Windows, macOS and phones scale the desktop up so text isn't tiny, so websites see a smaller 'CSS pixel' size; the ratio between the two is the device pixel ratio.
The browser window size updates live as you resize, which is handy for web design and screenshots.
How to use the Screen Resolution Checker
- Open this page on the device you want to check.
- Read the resolution and details.
- Resize the window to see the viewport change.
Features
- Physical & CSS pixelsBoth shown.
- Scaling100%, 125%, 150%…
- Live viewportUpdates on resize.
- Nothing recordedRuns only in your browser.
Frequently asked questions
Why does it show a lower resolution than my monitor?
If you use a browser zoom other than 100%, the reported scaling includes it. Reset zoom with Ctrl+0 for the true value.
Is the Screen Resolution Checker free?
Yes. The Screen Resolution Checker is completely free with no sign-up, no watermarks, no daily limits and no premium tier.
Are my files uploaded to a server?
No. FileStripe processes your files locally in your web browser using JavaScript. Nothing is uploaded, so the Screen Resolution Checker is safe for private photos and confidential documents and even works offline once the page has loaded.
Does it work on iPhone and Android?
Yes. The Screen Resolution Checker works in Safari, Chrome, Firefox, Edge and Samsung Internet on phones, tablets and computers. On a phone you can pick files from your photo library or files app and share the result straight to another app.
Last updated · Processing happens locally in your browser.