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Turn any photo or image into black and white (grayscale) right in your browser. Ideal for standardizing documents, giving a photo a classic look or removing color distractions. The conversion happens on your device — the file is never sent to a server.
Drag your files here
or click to select
Add the image
Drag the image (PNG, JPG or WEBP) onto the upload area or click to pick it. The file is read only in your device's memory.
Convert
Click process. Each pixel is converted to a shade of gray by luminance, keeping the original brightness and transparency.
Download the PNG
Download the black and white image. No copy is kept anywhere.
Black and white conveys a sober, timeless feel. In photos, it removes the visual noise of color and highlights shapes, contrast and texture. In scanned documents, it standardizes the material and usually makes the file lighter and easier to print.
It's also useful to unify the images in a presentation or portfolio, making sure they all share the same visual identity, with no distracting tone variations.
Converting to black and white isn't just dropping the color: each color has a different brightness as perceived by the eye. Here we use perceptual luminance (the same logic as TV and photography), where green weighs more than red and blue. The result preserves the original contrast instead of flattening the image.
Transparency is kept: if the image has a transparent background, it stays transparent in the result, since only the color channels are changed.
Many online editors upload your image to a server, process it there and send the result back. For personal photos or work images, that means handing the content to a machine you don't control.
On Free PDF Lover, all processing happens inside the browser, using your device's own graphics engine. The image is decoded in memory, converted right there and made available for download — without ever going to the internet.
The output is PNG, lossless, so the black and white image keeps all the sharpness of the original. It's the ideal format when fidelity matters.
Because everything runs on your device, speed depends on available memory, not on a server. Ordinary images are converted in an instant, even on phones.
Yes. The tool is free and needs no sign-up.
No. The processing happens entirely in your browser. The image is never transmitted to the internet or stored.
Yes. Only the color channels are converted to gray; the transparency channel stays intact.
No. The output is lossless PNG, so the original sharpness is preserved.
PNG, JPG and WEBP. The result always comes out as PNG.
Yes. The tool works on phones and tablets, right in the browser.
No. Everything runs in the browser, with nothing to install and no extensions.