Image Tools
Pixelate Image
Pixelate (mosaic) an image in your browser to censor faces, plates, or sensitive details. Adjustable pixel size with a live preview — 100% client-side, nothing uploaded.
Image Tools
Grayscale & Black-and-White Image
Turn any photo into smooth grayscale, high-contrast black & white, or warm sepia — with adjustable intensity and a live preview — all inside your browser.
The Grayscale & Black-and-White tool removes or tones down colour, right in your browser.
Pick grayscale, pure black & white, or sepia, fine-tune it, and download. Nothing is uploaded.
How to convert an image
- Upload your image. Drag it in or click to choose a file.
- Pick an effect. Grayscale, black & white, or sepia.
- Adjust it. Use the intensity slider, or the threshold for black & white.
- Download. Save the recoloured image in a click.
Three classic looks
Grayscale gives a timeless monochrome photo, while pure black & white creates bold, graphic contrast for posters and line art. Sepia adds a warm, aged feel.
Because it all runs locally, you can experiment freely without uploading a single file.
- Private: recolouring happens on your device.
- Adjustable: intensity and threshold controls.
- Live preview: see changes as you slide.
- Transparency kept: PNG alpha is preserved.
Related image tools
Colour is one dimension of an edit. To change format or compress the result, the Image Converter exports to WebP, JPG, PNG, or AVIF.
If you want to sample the exact colours in a photo first, the Image Color Picker reads any pixel's value. And to frame the finished monochrome shot, the Add Border to Image adds a clean border.
Frequently Asked Questions
Is my image uploaded to convert it?
No. The colour conversion runs on a canvas in your browser, so the image never leaves your device. Nothing is uploaded or stored.
What is the difference between grayscale and black & white?
Grayscale keeps the full range of grey tones, so it looks like a classic monochrome photo. Black & white forces every pixel to be either pure black or pure white based on a threshold you set.
What does the intensity slider do?
For grayscale and sepia it blends between the original colours and the full effect, so you can apply a subtle tint or go all the way.
Can I make a high-contrast image?
Yes. Choose Black & White and adjust the threshold to control how much of the image turns black versus white.
Does it work on transparent PNGs?
Yes. Transparent areas stay transparent, and the visible pixels are recoloured.
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