Black & White Converter

Kill the colour.

Or just some of it.

Drop your images here

or tap to browse · JPG, PNG, WebP

No upload
Works offline
No idea what's in your images

Need to convert hundreds of images? The offline bundle handles batches with no size limit. $99 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Drop
Drag your images onto the page. They stay on your device.
02
Convert
Choose full B&W, partial desaturation, or sepia — all in your browser.
03
Download
Save the converted images. Nothing was ever uploaded.
// Why this is different

Your images never leave your machine.

Most online converters upload your photos to a remote server. Your images pass through infrastructure you don't control.

fwip works differently. The conversion engine runs entirely in your browser. Your image is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

// Questions

Frequently asked.

How do I convert a photo to black and white without uploading?▾
Drop your image onto fwip. The tool converts it to greyscale using luminance-weighted pixel processing entirely in your browser. Your photo never leaves your device.
What is the difference between full B&W, partial, and sepia?▾
Full B&W removes all colour. Partial blends the original colour with greyscale for a faded look. Sepia applies warm brown tones over the greyscale for a vintage feel.
Can I convert multiple images to black and white at once?▾
Yes. fwip accepts up to 50 images at once. All are converted in your browser and downloaded as a ZIP file.
What image formats are supported?▾
fwip supports JPG, PNG, and WebP images up to 50 MB each. The output format matches your input.
// Related tools

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Draw a crop box. Aspect ratio presets.

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