Image Binarizer
Convert images to black and white binary with adjustable threshold
Supported formats: JPEG, PNG, WebP, GIF, BMP
How to Use
- Click "Select Image" to upload an image file
- Adjust the threshold using the slider
- Click "Download" to save
* All processing is done in your browser. Images are never sent to a server.
About this tool
The Image Binarizer reduces an image to pure black-and-white using an adjustable threshold. Useful when you want to preserve only shapes and outlines rather than tonal range.
Common use cases
- Pre-process scans or photos before running OCR for better text recognition.
- Extract line art or silhouettes from photographs for illustration work.
- Prepare images for laser cutting, stencil making, or embroidery patterns.
- Improve readability of receipts, whiteboards, or handwritten notes.