Screen Size Checker

View your current viewport, screen size, pixel ratio, and orientation.

Viewport
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Viewport Width
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Viewport Height
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Screen Size
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Available Screen
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Device Pixel Ratio
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Orientation
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About this tool

Screen Size helps front-end developers, support teams, QA testers, and device troubleshooters view your current viewport, screen size, pixel ratio, and orientation. Use it during responsive QA, bug reports, browser support checks, and environment diagnostics when you need a focused result you can read, copy, or share without opening a heavier application.

Use cases

  • Use Screen Size during debugging when you need to view your current viewport, screen size, pixel ratio, and orientation without leaving the browser.
  • Copy Screen Size output into tickets, docs, test notes, spreadsheets, or chat threads so teammates can verify the same result.
  • Keep Screen Size open as a repeatable browser utility for quick checks instead of building a one-off spreadsheet or script.

FAQ

What is Screen Size best used for?

Screen Size is best used when you need to view your current viewport, screen size, pixel ratio, and orientation in a fast, copy-friendly browser workflow.

Who benefits most from the Screen Size tool?

It is especially helpful for front-end developers, support teams, QA testers, and device troubleshooters who handle responsive QA, bug reports, browser support checks, and environment diagnostics, and need clear output without extra setup.

Can I use Screen Size results in documentation or bug reports?

Yes. The output is designed to be readable and easy to paste into issues, docs, QA notes, or team conversations.