Black & White Image

Convert any colour photo to black and white online for free — with an adjustable intensity slider for a subtle desaturation or a full grayscale, all in your browser.

Drop or click to upload PNG, JPG, WebP or BMP

Max file size 10MB. Sign up for more.

How To Convert An Image To Black And White Online For Free

Upload Your Image

Drag and drop an image or click to browse. Supports PNG, JPG, WebP, and BMP.

Adjust Intensity

Drag the Intensity slider — 100% for full black and white, or lower to keep some colour.

Download

Choose PNG, JPG, or WebP and download the result at full resolution.

Instant Conversion

Convert color photos to black and white in one click.

Adjustable Intensity

Partial desaturation lets you dial in the exact look you want.

Print-Ready Output

Export grayscale images in PNG, JPEG, or WebP at full resolution.

No Sign-Up

Use instantly — no account, no watermark, no software to install.

Frequently Asked Questions

How to convert a colour photo to black and white

Upload your image and drag the Intensity slider to 100% for full grayscale. The preview updates live. Click Download to save. All processing runs in your browser — no upload, no privacy risk.

How to create a vintage or desaturated photo effect

Set the Intensity slider below 100% — around 40–70% gives a faded, muted look that keeps a hint of the original colour. This produces the vintage or film-washed aesthetic popular on Instagram and Pinterest.

What is the difference between black and white and grayscale?

In everyday use they mean the same thing: a grayscale image maps every colour to a shade of grey between black and white. True 1-bit 'black and white' (only pure black or pure white) is different, but this tool produces the grayscale look most people want.

How to make a black and white photo for printing

Upload your colour photo, set Intensity to 100%, and export as PNG for lossless quality or JPG at high quality. The output keeps the original resolution, so the print will be as sharp as the source photo.

Does converting to black and white reduce quality?

No. Only the colour of each pixel changes; resolution and detail are preserved. PNG export is lossless.

Can I convert photos to black and white on my phone?

Yes. The tool runs in any mobile browser — Safari, Chrome, or any modern browser. No app download needed. Upload, adjust, and save directly to your camera roll.

What formats are supported?

Upload PNG, JPG, JPEG, WebP, or BMP, and export as PNG, JPG, or WebP.

Common Use Cases

Create classic black-and-white photography effects
Prepare images for single-color print materials
Reduce visual distractions in instructional images
Generate consistent thumbnail styles for content libraries
Convert color charts to grayscale for accessibility testing

How Grayscale Conversion Works

Grayscale conversion transforms a color image into shades of gray by calculating the luminance value of each pixel. Rather than simply averaging the red, green, and blue channels equally, the conversion uses perceptual weighting that matches how human eyes perceive brightness — green contributes most, followed by red, then blue. The intensity control lets you blend between the original color image and full grayscale for partial desaturation effects.

Converting images to grayscale has applications across photography, design, and print production. Black-and-white photography remains one of the most popular artistic styles, emphasizing texture, contrast, and composition over color. Print materials using single-color or two-color processes require grayscale source images. Grayscale conversion also helps designers evaluate whether their visual content maintains sufficient contrast and readability without relying on color differentiation, which is important for accessibility compliance.