Test Pattern Image Generator
Generate test pattern images including SMPTE color bars, grids, checkerboards, and more for display testing and calibration.
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SMPTE Color Bars HD
Standard SMPTE color bars at 1920×1080 for display calibration
SMPTESMPTE Color Bars SD
Standard SMPTE color bars at 720×480 for SD displays
SMPTESMPTE Color Bars 4K
SMPTE color bars at 3840×2160 for 4K displays
SMPTEFine Grid Pattern
10px grid for precise alignment testing
GridStandard Grid Pattern
20px grid for general purpose testing
GridLarge Grid Pattern
50px grid for layout testing
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Generate professional test patterns for display calibration, resolution testing, and visual alignment. Create SMPTE color bars, precision grids, checkerboards, and more—all generated instantly in your browser.
What are Test Patterns?
Test patterns are standardized images designed to evaluate and calibrate display devices. They reveal issues with color accuracy, contrast, resolution, geometry, and pixel alignment that might not be visible with regular content. From broadcast-standard SMPTE color bars to precision alignment grids, test patterns are essential tools for anyone working with displays, cameras, or video equipment.
Why Use Test Pattern Images?
Calibrate monitors and TVs for accurate color reproduction
Test display resolution and pixel clarity
Check screen geometry and alignment
Verify video equipment signal integrity
Debug display rendering issues in software
Create placeholder patterns for development
Test print quality and alignment
Validate image processing pipelines
Common Test Pattern Use Cases
Display Calibration
Use SMPTE color bars to adjust brightness, contrast, and color settings on monitors, TVs, and projectors for optimal viewing.
Video Production
Test cameras, monitors, and broadcast equipment to ensure consistent color and signal quality across the production pipeline.
Software Development
Use grid and checkerboard patterns to debug rendering engines, test image scaling algorithms, and verify pixel-perfect layouts.
Quality Assurance
Systematically test displays at different resolutions to identify defects, dead pixels, or uniformity issues.
Generator Features
SMPTE color bars with accurate broadcast-standard colors
Customizable grid patterns with adjustable cell sizes
Checkerboard patterns for contrast and pixel testing
Stripe patterns for resolution limit testing
Dot patterns for halftone and print testing
Standard resolution presets (720p, 1080p, 4K)
Custom dimensions up to 8192×8192 pixels
PNG, JPEG, and WebP export formats
Customizable colors for non-SMPTE patterns
100% browser-based—no uploads required
Cómo Funciona
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Preguntas Frecuentes
What are SMPTE color bars used for?
SMPTE color bars are industry-standard test patterns used to calibrate and test video displays, cameras, and broadcast equipment. They help ensure accurate color reproduction and signal levels.
Which pattern type should I use for screen testing?
Grid patterns are best for checking alignment and distortion. Checkerboards help test contrast and pixel accuracy. SMPTE bars are ideal for color calibration. Stripe patterns help identify resolution limits.
What resolution should I use for test patterns?
Use the native resolution of your display for the most accurate testing. Common choices are 1920×1080 for Full HD, 2560×1440 for QHD, and 3840×2160 for 4K displays.
Why use PNG format for test patterns?
PNG format is lossless, meaning it preserves the exact pixel values without compression artifacts. This is crucial for test patterns where sharp edges and accurate colors are essential.
How do I use grid patterns for alignment?
Display the grid pattern in full screen on your monitor. Check that all lines appear straight, evenly spaced, and reach the edges of the screen. Any distortion indicates display geometry issues.
Can I customize the pattern colors?
Yes, except for SMPTE color bars (which have standardized colors), all other patterns allow you to customize primary and secondary colors to suit your testing needs.