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Drag & drop or click to upload
Max 10MB - Ctrl+V to paste
How to use Grayscale Converter
- 1
Upload your image
Drop any color image. Conversion happens automatically on upload.
- 2
Preview the result
Use the Before/After slider to compare the original and grayscale versions.
- 3
Download
Save the black-and-white image.
Features
- +Instant auto-conversion on upload
- +Before/After comparison slider
- +Luminance-weighted grayscale (accurate perceived brightness)
- +Supports JPG, PNG, WebP
Frequently Asked Questions
What grayscale algorithm is used?
Luminance-weighted formula: 0.299R + 0.587G + 0.114B, matching human perception of brightness.
Can I convert back to color?
Standard grayscale is irreversible. For colorizing grayscale photos, use the AI Colorizer tool (Phase 5).