Screen Resolution Tester - Online Resolution Test

Check screen resolution and test responsive design

Screen information of you

Screen Resolution

0 x 0

Viewport Size

0 x 0

Device Pixel Ratio

1x

Actual Pixels

0 x 0

Test URL with different size

Popular Breakpoints

BreakpointMin WidthTailwind CSSBootstrap
Mobile0pxdefaultxs
Small640pxsm:sm
Medium768pxmd:md
Large1024pxlg:lg
Extra Large1280pxxl:xl
2XL1536px2xl:xxl

Screen Resolution Tester - Check Screen Resolution & Test Responsive Design Online

Tan Phat Digital's free online screen resolution checking tool. Displays screen resolution, viewport size, device pixel ratio of the current device. Test responsive design with 8+ popular presets: iPhone SE, iPhone 14 Pro, iPad Mini, iPad Pro, MacBook Air, Desktop HD/2K/4K. Open URL in new window with optional size. Tailwind CSS and Bootstrap breakpoints reference table. Copy screen information with one click. Useful for web developers, UI/UX designers when testing responsive design.

Outstanding features

Display Screen Resolution (screen resolution)
Display Viewport Size (display area size)
Display Device Pixel Ratio (DPR)
Calculate Actual Pixels (actual pixels)
8+ popular device presets
iPhone SE (375x667), iPhone 14 Pro (393x852)
iPad Mini (768x1024), iPad Pro 12.9 (1024x1366)
MacBook Air (1440x900)
Desktop HD (1920x1080), 2K (2560x1440), 4K (3840x2160)
Test URL in new window with preset size
Tailwind CSS and Bootstrap breakpoints table
Copy screen information with one click
Update realtime when resizing window
Completely free

Why is it necessary to test responsive design?

Responsive design is a mandatory requirement for every modern website. According to StatCounter, mobile traffic accounts for more than 55% of global web traffic. Google uses mobile-first indexing, meaning the mobile version of the website is used for ranking. A non-responsive website will: Lose traffic from mobile users. Lowly rated by Google in rankings. There is a high bounce rate due to poor UX. Loss of potential customers and revenue. This tool helps developers and designers: Quickly check current screen information. Test website on many different sizes. Debug CSS breakpoints. Make sure the website displays well on all devices.

Benefits when used

  • •Quickly check current screen information
  • •Test responsive design across multiple dimensions
  • •No need for physical devices to test
  • •Debug CSS breakpoints easily
  • •Refer to breakpoints of popular frameworks
  • •Understanding DPR for Retina displays
  • •Free, no installation required

How to use Screen Resolution Tester

  1. 1View current screen information in the left panel
  2. 2Screen Resolution: Physical screen resolution
  3. 3Viewport Size: Size of the display area in the browser
  4. 4Device Pixel Ratio: Pixel ratio (Retina = 2 or 3)
  5. 5Enter the website URL to test in the input box (optional)
  6. 6Click on the device preset to open a new window with that size
  7. 7Check out the website displayed in a new window
  8. 8Resize the window to test breakpoints
  9. 9Refer to the breakpoints table at the bottom of page

Cooperate immediately with Mavis Digital

We not only design websites, but also help businesses build strong digital brands. Providing comprehensive website design services from design to SEO optimization. Please contact Mavis Digital immediately to create breakthrough, effective and sustainable technology solutions for your business in Ho Chi Minh.

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