png394 B
16-Step Grey Wedge
A 16-step greyscale wedge from pure black to pure white, for testing tone reproduction, banding, and monitor calibration.
Specifications
- Width
- 512
- Height
- 128
- Mode
- L (8-bit greyscale)
- Steps
- 16
- Range
- 0–255
What is a .png file?
PNG (Portable Network Graphics) is a raster image format using lossless DEFLATE compression. It supports full 8- or 16-bit-per-channel truecolor, palette, and greyscale modes with an optional alpha channel, but no animation. It is the standard choice for screenshots, logos, and graphics with sharp edges or transparency.
How to use this file
Use an example PNG to test image decoders, alpha-compositing, thumbnail generators, and format converters, or to verify that a pipeline preserves transparency and color depth on round-trip.
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Generated by generation/images_greyscale.py. Free for any use, no attribution required — license.