Black and white images
Force every pixel to pure black or white. Nothing is uploaded.
- Your files are never uploaded
- Processed on your device
- Works offline
- Free, no sign-up
Drop your images here
Images · up to 10 files, 100 MB each
or paste with Ctrl+VLive preview
Settings
Pixels brighter than this become white, darker ones become black.
Swap black and white.
PNG keeps every shade exactly. JPG and WebP use the quality below.
Used for JPG and WebP only. PNG is always saved losslessly.
How it works
Add your images
Choose up to 10 images — JPG, PNG, WebP, GIF, BMP, AVIF or HEIC — straight from your device.
Tune the effect
Set the cutoff level, and toggle invert for white-on-black.
Download the result
Preview each filtered copy, then save them one by one or all together as a ZIP.
Pure black, pure white
This tool forces every pixel to either full black or full white using your cutoff level. Anything brighter than the level becomes white, anything darker becomes black: no greys survive.
Low cutoffs keep only the brightest details like lamps and skies; high cutoffs keep shadows and silhouettes. The default of 128 splits the middle for balanced scenes.
When to go absolute
Absolute black-and-white suits logos, stamps, stencils and bold graphic prints where grey would blur the message. Text scanned from paper becomes razor sharp.
Photos of faces usually prefer dithering instead, which keeps shading through dot patterns. Try both tools on portraits and keep whichever reads better at your final size.
Cutoffs computed at home
The threshold comparison runs pixel by pixel inside your browser, on your processor, in real time. Sensitive documents and ID scans are never transmitted to be classified.
No copies linger after download and no logs record your cutoff choices. When the tab closes, the only evidence is the file you saved yourself.
Questions
Are my images uploaded when I use this?
No. Everything runs inside your browser on your own device. Your files are never sent to us or to anyone else.
How does the cutoff level work?
Every pixel brighter than the level becomes pure white and every darker pixel becomes pure black. At 128 the image splits exactly down the middle.
What does the invert toggle do?
It swaps the result: black becomes white and white becomes black, giving a dark-background negative of the same cutoff.
Is it free?
Yes. Free to use, with no sign-up, no watermark and no daily limits.
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