Screen Resolution Tester

Comprehensive display testing tool to check screen resolution, color depth, pixel density, and overall display quality. Perfect for monitor calibration and quality assessment.

Width: 0px
Height: 0px
0
px
×
0
px
Screen Resolution
Screen Resolution
Total display pixels
0 × 0
Aspect ratio: 0:0
Color Depth
Color quality support
24-bit
~16.7 million colors
Pixel Density
Pixels per inch (PPI)
0
Unknown screen size
Viewport Size
Browser window dimensions
0 × 0
Current browser window
0
Display Quality Score
Based on resolution, density, and color depth

Display Test Patterns

Use these patterns to check your display for color accuracy, pixel defects, and visual quality.

Color Test
Check color reproduction and uniformity
Gradient Test
Test smooth color transitions
Pixel Grid
Detect dead or stuck pixels
Text Sharpness
Check text clarity and readability
Color Blindness
Test for color vision deficiency
Red
#FF3333
#FF6666
#FF9999
#FFCCCC
Green
#33FF33
#66FF66
#99FF99
#CCFFCC
Blue
#3333FF
#6666FF
#9999FF
#CCCCFF
Yellow
#FFFF33
#FFFF66
#FFFF99
#FFFFCC
Black
#333333
#666666
#999999
#CCCCCC
This is 10px text - Check for clarity
This is 14px text - Standard body text
This is 24px text - Should be very clear
This is 36px text - Perfectly sharp
Thin font weight test
Bold font weight test

Color Blindness Test

People with normal color vision should see numbers in the circles below.

12
8
6
29
57
15
74
2
45
3

If you cannot see some numbers, you may have color vision deficiency.

Test Instructions

1

Color Test: Check for color uniformity across your screen. All color squares should appear distinct with no discolored areas.

2

Gradient Test: Look for smooth transitions between colors without visible banding or abrupt changes.

3

Pixel Grid: Examine closely for dead pixels (black spots) or stuck pixels (colored spots that don't change).

4

Text Sharpness: All text should appear clear and sharp with no blurriness or color fringing.

Common Screen Resolutions

Compare your screen resolution with common standards used across devices.

Resolution Aspect Ratio Common Name Typical Devices Pixel Count

Detailed Display Information

  • Browser Viewport 0×0
  • Screen Orientation Portrait
  • Color Depth 24-bit
  • Device Pixel Ratio 1.0
  • Available Screen 0×0
  • Touch Support No
  • Display Type Unknown
  • Estimated PPI 0

Understanding Screen Resolution

Screen resolution refers to the number of distinct pixels that can be displayed in each dimension on a screen. It's typically expressed as width × height in pixels. Higher resolutions mean more pixels are used to create the image, resulting in sharper, more detailed visuals.

Key Display Quality Factors:

  • Resolution: Total number of pixels (width × height)
  • Pixel Density (PPI): Pixels per inch, determines sharpness
  • Color Depth: Number of colors the display can reproduce
  • Refresh Rate: How many times the screen updates per second
  • Response Time: How quickly pixels can change color

Why Screen Resolution Matters

1

Image Quality: Higher resolutions provide sharper images and text with more detail

2

Screen Real Estate: More pixels allow more content to be displayed simultaneously

3

Content Creation: High-resolution displays are essential for photo/video editing and design work

4

Gaming & Media: Enhanced visual experience with more detailed graphics and video

Common Resolution Standards

Standard Resolution Aspect Ratio Usage
HD (720p) 1280 × 720 16:9 Basic HD content, entry-level displays
Full HD (1080p) 1920 × 1080 16:9 Standard for monitors, TVs, and laptops
2K / QHD 2560 × 1440 16:9 High-end monitors, premium laptops
4K / UHD 3840 × 2160 16:9 Premium displays, content creation, gaming
8K UHD 7680 × 4320 16:9 Cutting-edge displays, professional use

Pixel Density (PPI) Explained

Pixel density, measured in pixels per inch (PPI), determines how sharp an image appears. Higher PPI means pixels are packed more tightly, making individual pixels less noticeable. This is particularly important for mobile devices where screens are viewed up close.

  • Low PPI (<100): Pixels are visible, text may appear jagged
  • Standard PPI (100-150): Typical for desktop monitors
  • High PPI (150-300): Sharp displays, common in laptops and premium monitors
  • Retina/High-DPI (>300): Pixels are not discernible at normal viewing distances

Tool Features:

  • Real-time screen resolution and display information
  • Color depth and pixel density analysis
  • Interactive test patterns for display quality assessment
  • Display quality scoring based on multiple factors
  • Comparison with common resolution standards
  • Color blindness and visual quality tests

Frequently Asked Questions

Screen resolution refers to the total number of physical pixels on your display (e.g., 1920×1080). Viewport size is the visible area within your browser window, which can be smaller than your screen resolution if the browser isn't maximized or if there are browser toolbars, bookmarks bars, etc. taking up space.

Pixel density (PPI) is calculated using the formula: √(width² + height²) / diagonal screen size in inches. Since we can't detect physical screen size through JavaScript, our tool estimates PPI based on common device profiles. For accurate PPI calculation, you need to know your screen's physical dimensions.

Color depth refers to the number of bits used to represent the color of a single pixel. Common values are:
  • 8-bit (256 colors): Very limited color range
  • 16-bit (65,536 colors): Basic color support
  • 24-bit (16.7 million colors): Standard for most displays
  • 30/48-bit (1+ billion colors): Professional displays for accurate color work
Higher color depth means smoother gradients and more accurate color reproduction.

Use the test patterns to check different aspects of your display:
  1. Use the color test to ensure colors are accurate and uniform across the screen
  2. Use the gradient test to check for smooth transitions without banding
  3. Use the pixel grid to identify dead or stuck pixels
  4. Use the text sharpness test to ensure clarity and adjust ClearType/text smoothing if needed
Based on the results, adjust your monitor's brightness, contrast, color temperature, and sharpness settings.

The Display Quality Score is calculated based on multiple factors:
  • Resolution: Higher resolutions score better
  • Estimated PPI: Higher pixel density improves the score
  • Color Depth: More color bits result in a higher score
  • Aspect Ratio: Modern aspect ratios (16:9, 16:10) score better than older ones (4:3)
  • Device Pixel Ratio: High-DPI displays (ratio ≥ 2) get bonus points
The score is on a scale of 0-100, with 100 representing an excellent display.

Understanding Screen Resolution

Screen resolution refers to the number of distinct pixels that can be displayed in each dimension on a screen. It's typically expressed as width × height in pixels. Higher resolutions mean more pixels are used to create the image, resulting in sharper, more detailed visuals.

Key Display Quality Factors:

  • Resolution: Total number of pixels (width × height)
  • Pixel Density (PPI): Pixels per inch, determines sharpness
  • Color Depth: Number of colors the display can reproduce
  • Refresh Rate: How many times the screen updates per second
  • Response Time: How quickly pixels can change color

Why Screen Resolution Matters

1

Image Quality: Higher resolutions provide sharper images and text with more detail

2

Screen Real Estate: More pixels allow more content to be displayed simultaneously

3

Content Creation: High-resolution displays are essential for photo/video editing and design work

4

Gaming & Media: Enhanced visual experience with more detailed graphics and video

Common Resolution Standards

Standard Resolution Aspect Ratio Usage
HD (720p) 1280 × 720 16:9 Basic HD content, entry-level displays
Full HD (1080p) 1920 × 1080 16:9 Standard for monitors, TVs, and laptops
2K / QHD 2560 × 1440 16:9 High-end monitors, premium laptops
4K / UHD 3840 × 2160 16:9 Premium displays, content creation, gaming
8K UHD 7680 × 4320 16:9 Cutting-edge displays, professional use

Pixel Density (PPI) Explained

Pixel density, measured in pixels per inch (PPI), determines how sharp an image appears. Higher PPI means pixels are packed more tightly, making individual pixels less noticeable. This is particularly important for mobile devices where screens are viewed up close.

  • Low PPI (<100): Pixels are visible, text may appear jagged
  • Standard PPI (100-150): Typical for desktop monitors
  • High PPI (150-300): Sharp displays, common in laptops and premium monitors
  • Retina/High-DPI (>300): Pixels are not discernible at normal viewing distances

Tool Features:

  • Real-time screen resolution and display information
  • Color depth and pixel density analysis
  • Interactive test patterns for display quality assessment
  • Display quality scoring based on multiple factors
  • Comparison with common resolution standards
  • Color blindness and visual quality tests

Frequently Asked Questions

Screen resolution refers to the total number of physical pixels on your display (e.g., 1920×1080). Viewport size is the visible area within your browser window, which can be smaller than your screen resolution if the browser isn't maximized or if there are browser toolbars, bookmarks bars, etc. taking up space.

Pixel density (PPI) is calculated using the formula: √(width² + height²) / diagonal screen size in inches. Since we can't detect physical screen size through JavaScript, our tool estimates PPI based on common device profiles. For accurate PPI calculation, you need to know your screen's physical dimensions.

Color depth refers to the number of bits used to represent the color of a single pixel. Common values are:
  • 8-bit (256 colors): Very limited color range
  • 16-bit (65,536 colors): Basic color support
  • 24-bit (16.7 million colors): Standard for most displays
  • 30/48-bit (1+ billion colors): Professional displays for accurate color work
Higher color depth means smoother gradients and more accurate color reproduction.

Use the test patterns to check different aspects of your display:
  1. Use the color test to ensure colors are accurate and uniform across the screen
  2. Use the gradient test to check for smooth transitions without banding
  3. Use the pixel grid to identify dead or stuck pixels
  4. Use the text sharpness test to ensure clarity and adjust ClearType/text smoothing if needed
Based on the results, adjust your monitor's brightness, contrast, color temperature, and sharpness settings.

The Display Quality Score is calculated based on multiple factors:
  • Resolution: Higher resolutions score better
  • Estimated PPI: Higher pixel density improves the score
  • Color Depth: More color bits result in a higher score
  • Aspect Ratio: Modern aspect ratios (16:9, 16:10) score better than older ones (4:3)
  • Device Pixel Ratio: High-DPI displays (ratio ≥ 2) get bonus points
The score is on a scale of 0-100, with 100 representing an excellent display.