Screen Size & Device Info
See your viewport, screen size, pixel ratio, OS and browser the moment you open it — and copy it all at once.
Viewport
—
The part of the browser where the page is visible. It updates instantly when you resize the window or rotate the screen.
- Screen size
- —
- Pixel ratio (DPR)
- —
Also copies your OS, browser, language and more — ready to paste into a support request.
Screen
- Actual pixels
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- Aspect ratio
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- Orientation
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- Refresh rate
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- Browser zoom
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- Color gamut
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- HDR
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- Color depth
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- Safe area (notch)
- —
Device and browser
- OS
- —
- Browser
- —
- Device type
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- Input type
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- Touch
- —
- GPU
- —
- CPU cores
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- Memory
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- Storage available (approx.)
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Language and region
- Language
- —
- Preferred languages
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- Time zone
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Settings and connection
- Internet
- —
- Connection speed (approx.)
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- Cookies
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- Dark mode
- —
- Text size
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- Reduce motion
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- Increase contrast
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- Forced colors (high contrast)
- —
User agent (UA)
—
The name your browser gives itself. It can be changed, so the OS version and similar details may not match reality.
Everything is read on this device. Nothing is sent anywhere or saved.
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Something not working, or an idea to make it better?
How to use
1. See your screen size
When the page opens, the large number at the top shows your browser's viewport as width × height. The two boxes below it show the screen size and pixel ratio. Turn your phone sideways and the numbers change right away.
When the page opens, the large number on the left shows your browser's viewport as width × height. The two boxes below it show the screen size and pixel ratio. Resize the window and the numbers change right away.
2. Check the details
Scroll down past "Copy all info" to see your OS, browser, refresh rate, GPU, time zone and more, in the order Screen, Device and browser, Language and region, and Settings and connection. The user agent (UA) is at the very bottom.
The right column lists your OS, browser, refresh rate, GPU, time zone and more, in the order Screen, Device and browser, Language and region, and Settings and connection. Scroll to the bottom to see the user agent (UA).
3. Copy everything and send it
Tap "Copy all info". The button changes to "Copied", and the date and all the info are copied as text. Paste it into an email or a message to send it to a support team.
Click "Copy all info" on the left. The button changes to "Copied", and the date and all the info are copied as text. Paste it into an email or chat to send it to a support team.
Great for
When support asks about your system
Copy your OS, browser and screen size with one button. No digging through settings — just paste it into your support request.
Anyone contacting an app or service
Testing a website on a real device
See the real viewport and pixel ratio of any phone or tablet in a second. Handy for choosing breakpoints and image resolutions.
Web developers and designers
Checking someone else's device remotely
Send them this page's link, and ask them to paste back what they copied. No more describing screens over the phone.
IT help desks and the family tech helper
Finding the right wallpaper or screenshot size
"Actual pixels" is the screen's true resolution (for example 1179 × 2556) — the size to aim for when making a wallpaper or image.
People making wallpapers and images
Good to know
- It does not show your IP address. The tool never talks to outside servers, so it can only see what's on your device. Connection speed is only a rough estimate from the browser, in Chrome and on Android.
- It can't show the iPhone model name (such as iPhone 16), because browsers don't reveal it. Use the screen size as a hint.
- If the browser is zoomed in or out, the viewport and pixel ratio change. Reset the zoom to 100% before checking.
Viewport vs. screen size vs. actual pixels
This page shows three kinds of size. The viewport is the part of the browser where the page is actually visible — it leaves out the address bar, tabs and your computer's taskbar. The screen size is the whole screen measured in the unit web pages use (CSS pixels). Actual pixels is the screen size multiplied by the pixel ratio, which matches the resolution listed in the device's specs.
The pixel ratio (DPR) tells you how many physical dots draw one CSS pixel. iPhones use 3, while most computers use 1 to 2. If Windows display scaling is set to 125%, or the browser is zoomed, the pixel ratio goes up by that much and the viewport gets smaller. The OS and browser names come from the name the browser gives itself (the user agent) and from the extra details that Chrome, Edge and similar browsers provide on the device.
Frequently asked questions
Common questions about the numbers shown and what gets copied.
Is my information sent anywhere?
No. This page only reads values your browser already has, right on your device. Nothing is sent to a server or saved. The copied text stays on your device until you paste and send it yourself.
Why doesn't it show my IP address?
Finding your IP address requires asking an outside server. This tool never talks to outside servers, so it only shows what can be known on your device.
Why are the viewport and screen size different?
The viewport leaves out the address bar, tabs, bookmarks bar and your computer's taskbar. On phones, the viewport height can also change when the address bar shrinks as you scroll.
The actual pixels don't match my display's specs.
This can happen when Windows scaling is set to something like 125%, or when the browser is zoomed. Resetting browser zoom to 100% brings it closer to the spec. With an external monitor, you'll see the values for the screen this page is open on.
I'm on Windows 11, but it says "Windows 10 / 11".
In browsers like Firefox, the user agent is the same for Windows 10 and 11. Open this page in Chrome or Edge and it will tell them apart using extra details from your device.
Why isn't my macOS version shown?
Safari, Chrome and Firefox freeze the macOS version in the user agent at an old value (10.15), so showing it would be wrong. Chrome and Edge may show the real version.
My screen is 120 Hz, but the refresh rate says 60 Hz.
Safari normally limits page redraws to 60 times a second, so it shows 60 Hz. Low Power Mode on iPhone and power-saving settings on computers can lower it too. Try Chrome or plug in your device. The rate is measured again when you come back from another tab.
The GPU only says "Apple GPU".
Safari doesn't share the detailed GPU name, to make devices harder to tell apart. Firefox gives a slightly blurred, nearby name, so it's shown with "or similar". Chrome and Edge usually show the full model name.
Does it show my phone model?
iPhone model names aren't shown, because browsers don't reveal them. On Android, Chrome and similar browsers may show the model number (such as SM-S921B).
It says "LINE (in-app browser)".
Links opened from apps like LINE or Instagram open in the app's built-in browser, which can behave differently from Safari or Chrome. Mentioning this when you contact support can speed things up.
What's included in the copied text?
The date and time, the values under Screen, Device and browser, Language and region, and Settings and connection, plus the user agent — one "name: value" per line. Nothing that identifies you, like your name or email address, is included.
Is it free?
Yes. No sign-up and no ads.
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