Gaming

Screen Resolution Checker

Inspect screen, viewport, devicePixelRatio, and visualViewport in real time — with a tab-separated report you can paste into bug tickets. Readings use normal browser APIs only; nothing is uploaded, matching APK Analyzer and APK String Extractor.

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Resize the window or rotate your device — the table refreshes automatically.
Property Value

Pair with FPS Calculator for frame-time math and Viewport Resizer for iframe breakpoint checks.

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What this checker shows

Modern layout work bounces between CSS pixels, device pixels, and the layout viewport versus the visible visual viewport on mobile. This page surfaces the usual suspects (screen, window.inner*, devicePixelRatio, and visualViewport when available) in one place — like how APK Analyzer surfaces archive facts locally instead of hiding them behind a server.

Inner size vs screen size

screen.width/height describe the display in a CSS pixel coordinate system, while window.innerWidth/Height is the page viewport your document lays out into — minus browser chrome, split tabs, and so on. Do not confuse them when filing “broken at 1920px” bugs without saying which number you mean.

Approx physical pixels

Multiplying the inner viewport by devicePixelRatio gives a rough bitmap budget for full-bleed raster assets at current zoom. It is not a hardware EDID probe; for exact panel diagnostics use OS tools or a calibration workflow.

How to use it

  1. Step 1: Open the tool in the browser or embedded WebView you care about.
  2. Step 2: Resize, zoom, rotate, or enter fullscreen — watch values change live.
  3. Step 3: Copy report and paste into Jira, GitHub, or your stream notes.

Frequently Asked Questions

Does DroidXP upload my screen size or DPI?

No. Values come from standard browser APIs (screen, window, visualViewport) in your tab only — the same local-only approach as APK Analyzer and APK String Extractor.

Why is viewport smaller than screen.width?

Screen dimensions describe the display in CSS pixels; window.innerWidth/Height is the visible layout viewport inside the browser chrome, which excludes toolbars, sidebars, or split windows.

Is “approx physical pixels” my monitor’s hardware resolution?

It is innerWidth × devicePixelRatio and innerHeight × devicePixelRatio — a useful first guess for bitmap sizing, not a panel EDID readout.

What is devicePixelRatio?

It relates CSS pixels to device pixels for your current zoom/page. Values like 2 or 3 are common on “Retina” class displays; it can be non-integer when zoomed.

Why do numbers change when I zoom?

Zoom affects the CSS pixel grid and sometimes devicePixelRatio. Re-measure after changing zoom if you are debugging layout.

Does this replace developer tools?

No — DevTools goes deeper. This page is a quick shareable summary for tickets, streams, and friends.

Can I trust this for Android WebView vs Chrome?

WebViews can report different chrome and sizes than standalone browsers. Always test on the actual wrapper you ship.

What is visualViewport?

When supported, it reflects the visible viewport after mobile browser UI and pinch-zoom — useful on phones; it may be absent on older desktop engines.

Same privacy as inspecting an APK locally?

Yes: nothing is transmitted to DroidXP for the readings. Only ordinary page assets load from the site or CDN.

Will fullscreen change the readout?

Often yes — available height usually grows when browser chrome hides. Resize the window or toggle fullscreen and watch the live update.

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