Grayscale Converter
Convert images to black and white with multiple algorithms.
Learn more in the docs →Features
Multiple Algorithms
Luminosity, average, lightness, and desaturation methods.
Perceptual Accuracy
Luminosity method matches human vision perception.
Instant Preview
See results immediately as you change algorithms.
Frequently Asked Questions
Which algorithm should I use?
Luminosity is best for photos (matches human perception). Average is simple and fast. Lightness preserves more contrast.
What is the difference between algorithms?
Luminosity weights green more (human eyes are more sensitive to green). Average treats all colors equally. Lightness uses min/max values.
Will this work with transparent images?
Yes! Transparency (alpha channel) is preserved. Only the RGB colors are converted.