What is the difference between black & white and grayscale?

Grayscale images have shades of gray between black and white. Black & white (threshold) images use only pure black and pure white pixels — no gray.

What threshold value should I use?

A threshold of 128 (middle) is a good starting point. Increase it to turn more pixels black, decrease it to turn more pixels white.

Can I create a silhouette effect with this?

Yes. Set a threshold that makes the background white and the subject black (or vice versa) to create a silhouette.

Does the conversion affect image quality for documents?

For scanned text documents, black & white thresholding can actually improve readability by sharpening text contrast.

Convertir en Noir et Blanc

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Convertir en Noir et Blanc

Convertir les images en noir et blanc pur

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Learn more about Black & White Converter

About Black & White Converter

Convert any image to pure black and white using a threshold filter. Unlike grayscale, this produces only pure black or pure white pixels. Useful for creating silhouettes, document scanning effects, and artistic contrast images.

Key features

Adjustable threshold level (0–255)
Produces pure black and white (no gray tones)
Great for silhouettes, stamps, and document effects
Different from grayscale — uses binary thresholding
Instant preview as you adjust the threshold

How to use Black & White Converter

1Upload your image
2Move the threshold slider to set the cut-off point
3Preview the black and white result — adjust until it looks right
4Download the converted image

Frequently asked questions

What is the difference between black & white and grayscale?: Grayscale images have shades of gray between black and white. Black & white (threshold) images use only pure black and pure white pixels — no gray.
What threshold value should I use?: A threshold of 128 (middle) is a good starting point. Increase it to turn more pixels black, decrease it to turn more pixels white.
Can I create a silhouette effect with this?: Yes. Set a threshold that makes the background white and the subject black (or vice versa) to create a silhouette.
Does the conversion affect image quality for documents?: For scanned text documents, black & white thresholding can actually improve readability by sharpening text contrast.