Free Black & White Image Converter Online
Convert color images to black and white, grayscale, sepia, or threshold. Adjustable intensity with before/after preview.
Drag & drop images, or click to upload
JPG, PNG, WebP · Multiple files supported
No files are uploaded to any server. All processing happens locally in your browser.
Frequently Asked Questions
What conversion modes are available?
Three modes: Grayscale converts to true black-and-white using ITU-R BT.709 luminance weights. Threshold converts to pure black or white based on a brightness cutoff. Sepia adds a warm vintage tone.
Can I process multiple images at once?
Yes. Upload multiple images and they will all be converted with the same settings. Each image shows a before/after preview, and you can download all results at once.
What does the intensity slider do?
The intensity slider blends between the original color image (0%) and the fully converted result (100%). This lets you create partial desaturation effects or subtle sepia tones.
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