Add Grayscale to PNG

Convert your PNG images to grayscale directly in your browser. Upload your image, choose the grayscale conversion method, adjust settings, and download the result instantly.

Upload PNG File:

Grayscale Conversion Method:

Red Weight:

Green Weight:

Blue Weight:

Limit Grayscale Colors

Number of Gray Shades (1-256):

Original Image

Grayscale Image

Download Image

How This Tool Works

This tool uses the HTML5 Canvas API to convert your PNG images to grayscale directly in your browser. You can choose from different grayscale conversion methods, including average, HDTV, PAL/NTSC, or define your own custom weights. Additionally, you can limit the number of gray shades in the output image for a stylized effect. Once you're satisfied with the result, you can download the modified image instantly.

Client-side processing: Your images are never uploaded to a server.
Multiple conversion methods: Choose the grayscale algorithm that best suits your needs.
Customizable output: Define custom weights and limit gray shades for unique effects.
Instant download: Get your modified image immediately.