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NewMastershot Studio is open: a video editor with no watermark on anything you export. Try it free

Black and white image

Turn a color picture into black and white, keeping every shade of gray. Many at once, free, with no upload.

Files stay on your device

Drop images to make black and white

Add one or as many as you like. Each is edited on your device, so nothing is uploaded.

PNG, JPG, WebP, HEIC, AVIF, SVG, BMP, and GIF. As many as you like, or a whole folder.

Black and white
Every picture you add is saved with these settings.

Every color becomes the gray of how bright it looks.

Resize by

Shape

The whole picture is kept.

Turn

Clockwise above zero. The corners it leaves are filled in, or see-through in a PNG.

Mirror

Horizontal swaps left and right, as a mirror does. Vertical turns it upside down.

A JPG, PNG, or WebP stays what it is. Other pictures become JPG, or PNG when they're see-through.

Transparent areas and corners in a JPG

How to make an image black and white online

Add a picture and it's saved in black and white right away, with the brightness of every color kept as a shade of gray. Add a folder to convert a set at once. Everything happens in your browser, so your pictures are never uploaded.

  1. Step 1

    Choose your pictures
    Add one picture, several, or a folder.

  2. Step 2

    See it in gray
    Each is converted right away; change the format or size if you like.

  3. Step 3

    Download
    Save each picture, or all of them in a ZIP.

What to expect

Supported inputs
JPG, PNG, WebP, HEIC, AVIF, BMP, GIF, and SVG, one or many at once. HEIC opens in Chrome, Edge, and Safari on most computers, but not in Firefox.
What happens
Each pixel becomes the gray of how bright it looks, with green counting most and blue least, as the eye sees them. The picture keeps its size and transparency, and a JPG, PNG, or WebP stays in its format unless you choose another.
Limits
This is grayscale, with every shade between black and white, rather than pure black and white with no grays. Only the first frame of a moving GIF is converted.

Private by design

Your images stay on your device

Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.

  • No upload
  • No signup
  • No watermark

Questions

Yes. A black and white photo is made of grays. The brightness of every color is kept, and the color is taken out.

A little, usually. A JPG with no color has less to store. A PNG can shrink more; compress it afterwards if size matters.

Yes. Choose or drop as many as you like, or a folder, and download them one by one or all together in a ZIP.

No. They're converted in your browser, on your device, so nobody else sees them.

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