What is my screen resolution?
Your screen resolution is the width and height of the display in CSS pixels, read from the browser screen Application Programming Interface.
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Screen resolution
Screen resolution from the browser
Screen resolution here is the width × height reported by the browser screen API in CSS pixels. On high-density displays, CSS pixels differ from physical hardware pixels—so a “Retina” panel may report a logical size smaller than the marketing pixel count.
This is not your viewport (the visible browser window) and not your monitor’s EDID model name.
Zoom and multi-monitor
Browser zoom and OS scaling can change what APIs report. Multi-monitor setups usually expose the screen the browser window is on, depending on the browser.
Compare with viewport, available screen size, and pixel density tools for a fuller display picture.
Learn more
Compare with viewport—guide: screen resolution vs viewport.
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Frequently Asked Questions
What is screen resolution?
Screen resolution is how many pixels wide and tall your display is (for example 1920 × 1080). We read screen.width and screen.height from your browser.
Is this the same as viewport size?
No. Resolution is the full screen. Viewport is the visible browser content area and is usually smaller.
Why might it look wrong on a Retina display?
Browsers often report CSS pixels, not physical device pixels. Check device pixel ratio for density.
Does zoom change resolution?
Screen resolution usually stays the same when you zoom. Viewport size can change.
Can a website see my exact monitor model?
No. Browsers do not expose monitor brand or model name for privacy reasons.