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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).
Related Tools
If you need the next step, try Image Filters, Brightness & Contrast, Photo Editor, AI Colorizer.