Colorize Image
Add color to black and white photos — sepia toning plus hue rotation with luminance-aware blending. Free, instant, and private.
Private & Secure
Colorization happens entirely in your browser. Your image is never uploaded to any server.
Luminance-Aware Blending
Uses sepia toning with hue rotation and luminance-aware blending for natural-looking color. Adjust the Color Base slider to control intensity.
Frequently Asked Questions
Upload your vintage photos to the Toolsz Colorize Image tool. It uses a lightweight local AI model to add realistic colors. This is a unique Toolsz feature that operates entirely free, with no signup, no watermarks, and no cloud server uploading.
Yes — because Toolsz executes its tools client-side, your precious family photos never leave your device. It is secure, fast, and completely free.