Grayscale Image Converter – Make Photos Black & White

ToolsFaction Online Tool

Grayscale Image Converter

Turn color images into adjustable grayscale versions.

Convert photos and graphics to grayscale with adjustable black-and-white strength online.

About This Tool

ToolsFaction Grayscale Image Converter applies luminance-based grayscale processing locally in the browser and lets you blend the effect from zero to full strength.

How to Use

  1. Upload an image.
  2. Adjust grayscale strength.
  3. Review the live result.
  4. Download the processed PNG.

Example

Turn a color product photo into a full grayscale image for a monochrome layout.

Frequently Asked Questions

Can I use partial grayscale?

Yes. The strength slider blends between the original color and grayscale result.

What grayscale formula is used?

The tool uses weighted luminance values for red, green and blue.

Does it upload the photo?

No.

What format is downloaded?

PNG.

Free to UseNo hidden fees
No Sign-UpStart instantly
Browser-BasedNothing to install
Privacy FriendlyBuilt for simple use
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