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Viewport Size

Measure layout and visual viewports in CSS pixels, including page zoom scale. Free viewport size online, with no installation or account.

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Your files and input are processed in this browser. No uploads or accounts.

Tool capabilities

Input
Options
Output
JSON · TXT · PNG

How to use Viewport Size

Measure layout and visual viewports in CSS pixels, including page zoom scale.

  1. Use the controls above to start, paste or inspect. Permissions are requested only for the action you choose.
  2. Review the labeled results. Copy or download the report if needed.
  3. Stop camera or speaker playback before leaving the tool. Other diagnostic tools can be run again after changing settings.

Viewport Size · Example

Input

Open this tool and use its controls to inspect your browser or local clipboard.

Output

The current browser result or local preview appears here.

Measure layout and visual viewports in CSS pixels, including page zoom scale.

Usage notes

Inputs and results are processed on this device. Tool content is not sent to a processing server.

Measure layout and visual viewports in CSS pixels, including page zoom scale.

Results describe what this browser reports now. They do not certify hardware capabilities.

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