Image tools / Grayscale
Grayscale Image Converter
without uploading it.
Convert a photo to black and white — instantly in your browser.
Drop an image, or click to browse
✓No upload✓No signup✓No watermark✓Free forever
Drop an image or click to browse your files.
Click "Convert to grayscale".
Download the black-and-white image.
Why there's no upload step
Grayscale conversion is useful for print, design mockups, or a classic look. This tool computes real luminance-weighted grayscale (not just desaturation) using the Canvas API, entirely on your device.
Questions
Is my image uploaded anywhere?+
No. Conversion happens entirely in your browser using the Canvas API.
How is grayscale calculated?+
Using the standard luminance formula (weighting green highest, blue lowest) for a natural-looking result.