Black & White Image
Black & White Image — private browser processing
Drop an image here or click to browse
One image at a time · Max 20 MB
Original
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Output
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Black and White Image Converter
Turn color photos into classic grayscale JPGs. Useful for documents, artistic edits, and smaller file sizes.
How to Use
- Drop or select an image (JPG, PNG, or WebP — max 20 MB).
- Adjust settings if shown — output size updates automatically.
- Compare original vs output size in the badges above.
- Click Download. Your image never leaves your browser.
Frequently Asked Questions
True grayscale?
Yes — full desaturation applied via Canvas.
Adjust contrast?
Use Image Filters for blur/invert; this tool outputs standard grayscale JPG.
Related Tools
图片转黑白
将彩色照片转为经典灰度效果,适合文档、艺术风格或减小体积。上传后自动预览并显示输出大小。
使用方法
- 拖放或选择图片(JPG、PNG、WebP,最大 20 MB)。
- 如有参数可调,修改后输出大小会自动更新。
- 对比上方原图与输出大小。
- 点击下载。图片仅在浏览器内处理,不会上传。
常见问题
是真灰度吗?
是的,通过 Canvas 全图去色。
能调对比度吗?
请使用「图片滤镜」工具的反色/模糊等效果。