Threshold Image Converter
Turn a photo or graphic into pure black and white pixels with an adjustable luminance threshold and optional inversion.
Upload an image to create a two-color black and white threshold result.
Pure black and white
Every visible pixel becomes either zero or 255 instead of grayscale.
Adjustable cutoff
Control which luminance values become white with a 0 to 255 threshold.
One-click inversion
Swap black and white without changing the source image.
How it works
- 1
Upload an image
Choose a photo, scan, logo, or graphic from your device.
- 2
Tune the effect
Adjust the main control and optional inversion or dithering.
- 3
Download PNG
Save the processed result at the source pixel dimensions.
Choosing a threshold level
Start near 128, then lower the threshold to make more pixels white or raise it to make more pixels black. High-contrast source images give clearer silhouettes, logos, and stencil-style results.
Frequently asked questions
Does thresholding create grayscale?
No. The output contains pure black and pure white pixels.
What does Invert do?
It swaps the black and white output values.
Is my image uploaded?
No. Your image stays in your browser.
Threshold Image Converter last reviewed: Aug 2, 2026.