Are PixelTools free to use?

Yes, all 18 image tools on PixelTools are completely free with no limits, no account required, and no hidden fees.

Do my images get uploaded to a server?

Never. All processing happens locally in your browser using the Canvas API. Your files never leave your device.

What image formats are supported?

Most tools accept JPG, PNG, WEBP, and GIF. Output formats depend on the specific tool.

Is there a maximum file size?

No hard limit. Very large files (20MB+) may take a few seconds on older devices but will process correctly.

PixelTools

Browse Tools

Grayscale Converter

Convert color images to black and white online. Instant grayscale conversion — free and browser-based.

Processed locally in your browser

Your files are not uploaded

Free and private

Drag & drop your image here

or click to browse

Supports PNG, JPG, WEBP, GIF

Grayscale Converter Online — Black & White Images

Converting images to grayscale removes all color information, leaving only luminance data. This is useful for artistic effects, document scanning, reducing file size, and preparing images for print media that doesn't support color.

Our grayscale converter uses the luminosity method, which weights the RGB channels according to human visual perception. Green contributes most to perceived brightness (58.7%), followed by red (29.9%) and blue (11.4%). This produces more natural-looking black and white images than simple averaging.