Image Grayscale
Convert an image or photo to grayscale (black and white) online in your browser, with adjustable intensity.
Original size:
Set how much color to remove. 100% is fully grayscale, while lower values keep some of the original color. The live preview updates as you adjust it.
Grayscale image
Download imageToolsSoup's Image Grayscale is a free online tool that turns color photos and pictures into grayscale (black and white) right in your browser. Convert a photo to a clean monochrome look, prepare images for print, or create a classic timeless feel, then download the result in seconds — with no uploads, no watermarks, and no sign-up. Your images never leave your device.
What is a grayscale image tool?
A grayscale image tool removes the color from a picture and keeps only shades of gray, from pure black to pure white. Each pixel's red, green, and blue values are combined into a single brightness value, so the image still shows all its detail and contrast — just without any hue. This tool redraws your image onto a fresh canvas, computes a grayscale value for every pixel, and lets you download it as a new file at the same resolution. You can choose a luminance method (which weights the colors the way the human eye perceives brightness) or a simple average of the channels.
How to convert an image to grayscale online
Converting an image to grayscale with ToolsSoup takes just a few seconds:
- Click Choose an image and select the photo you want to convert.
- Drag the grayscale amount slider to set how much color to remove, from a subtle desaturation to fully black and white.
- Pick a conversion method — luminance for natural-looking results, or average for an even blend of the channels.
- Choose an output format (PNG, JPEG, or WebP), click Convert to grayscale, and download the result.
Grayscale, black and white, and desaturation
Grayscale keeps the full range of gray tones between black and white, which is what most people mean by a black-and-white photo. Setting the amount below 100% gives a partial desaturation that mutes the colors without removing them entirely — handy for a faded, vintage look. For a true monochrome conversion, leave the amount at 100% and choose the luminance method, which mirrors how your eyes weight red, green, and blue brightness.
Why use this grayscale image tool?
- 100% free with no ads, watermarks, sign-up, or usage limits.
- Runs entirely in your browser — your images are never uploaded to a server.
- Adjustable grayscale amount with a live preview so you get the exact look you want.
- Choose a luminance or average conversion method for different results.
- Keeps the original resolution and exports as PNG, JPEG, or WebP instantly.
Frequently asked questions
Is this grayscale image tool free?
Yes. Every tool on ToolsSoup is completely free to use, with no account, sign-up, watermarks, or hidden limits.
Are my images uploaded to a server?
No. All grayscale conversion happens locally in your browser using the HTML canvas, so your images are never uploaded, stored, or seen by anyone but you.
What is the difference between the luminance and average methods?
The luminance method weights the red, green, and blue channels the way the human eye perceives brightness, which produces the most natural grayscale. The average method simply averages the three channels equally, which is faster but can make some colors look lighter or darker than expected.
Can I convert just part of the image to grayscale?
The conversion applies to the whole image. If you only want part of it in grayscale, crop to that region first, convert it, and combine the pieces in an image editor.
What image formats are supported?
You can load common formats such as JPG, PNG, and WebP, and export the grayscale result as PNG, JPEG, or WebP.