Bulk Threshold to Black and White Free
Runs 100% in your browser — your files never leave your device.
Turn a folder of sketches into line art, make a batch of stencils, or create high-contrast masks for many images in a single pass. One threshold cutoff is applied to every file, and all the processing happens locally in your browser.
How it works
- 1
Add your images
Drop one or more JPG, PNG, or WebP files into the box. Nothing is uploaded.
- 2
Threshold the batch
Set the control once — it is applied to every file in the batch.
- 3
Download the results
Process the batch, then download each edited image individually.
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