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Screen Resolution Checker

See screen size, available area, window size, pixel ratio, and orientation — updates live on resize.

Processing: runs in your browser, nothing uploaded

✓ Free to use✓ No sign-up needed✓ Nothing to install

About Screen Resolution Checker

When something on your device misbehaves, a quick in-browser check saves guesswork. Screen Resolution Checker is built for that job: see screen size, available area, window size, pixel ratio, and orientation — updates live on resize.

What Screen Resolution Checker checks

See screen size, available area, window size, pixel ratio, and orientation — updates live on resize. Results describe this browser and device only — useful for isolating mute switches, permissions, and display quirks.

Where your data goes

Screen Resolution Checker runs in your browser for this job. Your display is not uploaded to FileToolsHub servers for the conversion itself, which matters when you are dealing with private notes, drafts, or local files.

If the test fails

Check OS settings, tab mute, extensions, and whether another app has exclusive device access. Retry after a click if the browser blocked autoplay or permission prompts.

How to use

  1. 1

    Open the page.

  2. 2

    Read live display metrics.

  3. 3

    Copy details if needed.

Privacy

Runs entirely in your browser — your display is not uploaded.

Frequently asked questions

Physical vs CSS pixels?

Screen width/height are in CSS pixels; multiply by device pixel ratio for approximate physical pixels.

Uploaded?

No — values come from local browser APIs.

Is Screen Resolution Checker free?

Yes. Screen Resolution Checker is free for everyday use with no account required, and it runs in your browser.

What input does Screen Resolution Checker expect?

Provide a display as shown on the page.

Physical vs CSS pixels?

Screen width/height are in CSS pixels; multiply by device pixel ratio for approximate physical pixels.

Uploaded?

No — values come from local browser APIs.

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