Grayscale Image
Convert photos to grayscale (black and white) with neutral, high-contrast or soft tones.
Free · No upload · 100% on your device
Grayscale Image
Choose images, or drop them here.
JPG, PNG, WebP, AVIF, GIF, BMP · No size limit. Nothing is uploaded. You can also paste an image.
100% on your device
How to use Grayscale Image
- Choose your image, or drop it on the page.
- Adjust the settings in the side panel. The preview updates as you go.
- Select “Convert to grayscale”.
- Download the result. Your original file is left unchanged.
Private by design. Your files are processed in this browser tab and are never uploaded to KittySuite.
About Grayscale Image
Grayscale uses perceptual brightness (Rec. 709), so greens look lighter than blues just as your eyes see them. "High contrast" adds punch for documents and street photos; "Soft" gives a gentle, faded look.
Processing happens in this browser tab: your images are never uploaded, and the result is ready as soon as you download it. Large photos take a moment longer on phones; nothing is limited by size.
Grayscale Image: frequently asked questions
How do I make a photo black and white?
Choose one or more photos and convert. Pick Neutral, High contrast or Soft tones and reduce the amount for a partly desaturated look.
Why do greens look lighter than blues?
Grayscale uses perceptual brightness (Rec. 709), which matches how your eyes see each colour, rather than a simple average.
Which tone suits scanned documents?
High contrast adds punch, which helps text on documents stand out. Soft gives a gentle, faded look for portraits.
Can I convert a batch of photos?
Yes. Add several images; each is converted in your browser and they can be downloaded together.