Black and White Converter
Convert an image to black and white. Upload an image, adjust the intensity, and download the grayscale result.
Click to upload an image
Your file is processed entirely in your browser
Recommended Settings
Pro Tips
- •100% intensity produces a fully grayscale image, while lower values blend the grayscale effect with the original colors
- •Converting to grayscale removes color information but keeps the same file size and resolution
- •Black and white conversions often work well for dramatic portraits or vintage-style photography
- •The whole file is processed locally in your browser - nothing is uploaded anywhere
Most Popular
Most users start with the default setting and fine-tune using the slider while previewing the result
When to Use This Tool
Use this tool to convert an image for classic photo effects.
Use this tool to convert an image for print preparation.
Use this tool to convert an image for design mockups.
How It Works
Read the uploaded image and decode it using the browser's native image support
Apply a CSS grayscale filter to the canvas at the selected intensity
Draw the filtered result onto a new canvas
Encode the canvas as PNG, ready to preview and download
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Browser native Canvas API for optimal performance on modern browsers.
Secure
No data collection, no tracking, no sign-up required.
Frequently Asked Questions
Does this reduce file size?
Not significantly. The image still has the same resolution and is saved as a full-color PNG internally, even though every pixel is a shade of gray.
Can I get a partial black and white effect?
Yes. Lower the intensity slider below 100% to blend the grayscale conversion with the original colors.
Is my image uploaded to a server?
No. The entire conversion happens locally in your browser using the Canvas API. Your image never leaves your device.
What format is the output?
The result is downloaded as a PNG file, which preserves any transparency in the original image.
Can I convert it back to color?
No. Grayscale conversion discards the original color information permanently - keep your original file if you need the color version later.