Convert Image to Black and White

Turn colour photos into greyscale, or into pure black and white with an adjustable threshold for documents and signatures.

Free, with no sign-up and no watermark. The file is processed in your browser and never uploaded.

Turn colour photos into classic greyscale, or into pure black and white with an adjustable threshold — useful for scanned documents and signatures.

Step by step

  1. Add images: Upload one or many.
  2. Pick a style: Greyscale keeps shades; Pure black & white uses only two colours.
  3. Adjust the threshold: For pure B&W, drag Threshold until text or lines are crisp.
  4. Convert: Click Convert to Black & White.

Handy for

Signatures

Clean up a signature photo for forms.

Documents

Make scans crisper and smaller.

Artistic photos

Classic monochrome portraits.

Printing

Save colour ink.

Good to know

  • For more control over the look, use the Mono or Noir filters in the Photo Editor.

Questions

Are my photos uploaded anywhere?

No. Every image is opened and processed inside your browser on your own device. Nothing is sent to a server, and closing the tab discards everything.

Which image formats can I use?

JPG, PNG, WebP, AVIF, GIF (first frame), BMP, TIFF, SVG and iPhone HEIC/HEIF photos. Photoshop PSD files work when they were saved with a flattened preview ("Maximize compatibility").

More Image Editor tools

  • Image Color Picker — Click anywhere on an image to read its exact colour as HEX, RGB and HSL, with a magnifier and a saved list.
  • Image Color Palette Extractor — Extract the main colours from any image as a palette with HEX codes and percentages, ready to copy as CSS or download.
  • Meme Generator — Add bold top-and-bottom text or a caption above your own picture to make a meme in seconds.
  • Photo Collage Maker — Arrange several photos into a collage with grid or featured layouts, spacing, rounded corners and a background colour.
  • Merge Images — Join two or more images into one, side by side or top to bottom, optionally matching their heights or widths.
  • Split Image — Cut an image into equal pieces, such as a 3×3 grid or a 1×3 carousel, and download them as a ZIP.

All Image Editor tools