png
What is a .png file?
image/png
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 a .png 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.
Download example .png files
- Fruit Still Life — Colour (512px)A colour fruit still life (apple, orange, banana, grapes), paired with a true-greyscale conversion — a real-world subject for testing desaturation and how distinct hues collapse to similar greys.
- Fruit Still Life — Greyscale (512px)True 8-bit greyscale conversion of the fruit still life, the paired reference for testing colour-to-grey conversion.
- Gradient Composition — Colour (512px)A smooth three-channel gradient composition, paired with its greyscale conversion to test luminance handling.
- Gradient Composition — Greyscale (512px)True 8-bit greyscale conversion of the gradient composition, the paired reference for testing colour-to-grey conversion.
- Full-Saturation Hue Bars — Colour (512px)Vertical bars sweeping the full hue circle at maximum saturation, paired with a greyscale version that shows how colours of different hues collapse to similar greys.
- Full-Saturation Hue Bars — Greyscale (512px)True 8-bit greyscale conversion of the full-saturation hue bars, the paired reference for testing colour-to-grey conversion.
- 16-Step Grey WedgeA 16-step greyscale wedge from pure black to pure white, for testing tone reproduction, banding, and monitor calibration.
- Black-to-White Tonal RampA continuous linear greyscale ramp from black to white, useful for spotting banding and gamma issues.
and 46 more in the library.