Black and White Image Converter
100% In-Browser ExecutionCategory: Image Converter & Editor • Free Online Utility
Turn color photos into black and white (grayscale) in one click, in bulk. Everything runs in your browser: no upload, no sign-up and no watermark.
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Privacy Guarantee: This tool processes all data locally inside your browser memory using HTML5 APIs. No text, code, or personal data is transmitted over the network.
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1
Add your images
Drop your color photos.
2
Choose the settings
Black and white is already switched on; adjust brightness and contrast if you like.
3
Download the result
Press Apply and download the grayscale images.
Frequently Asked Questions
Each pixel uses the standard luminance weights (30% red, 59% green, 11% blue), which look natural to the human eye.
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