Kolorize

Kolorize is a web-based tool that uses AI to automatically add realistic color to black-and-white photographs. You upload a grayscale image, and within a few seconds the tool returns a full-color version. It handles common formats like JPEG, PNG, and HEIC, and supports images up to 4096×4096 pixels. The service is designed for anyone who wants to restore old family photos, work with historical images, or simply see what a vintage scene looked like in color — without needing any photo-editing experience.

Kolorize runs its own AI model trained on millions of colorized restorations. Instead of applying a uniform tint, the model analyzes the tones, textures, and context in the photo to infer plausible colors for each element — skin, sky, fabrics, foliage. You can generate multiple color variations for free before deciding to download. The tool keeps the original grain and focus intact, adding color underneath rather than painting over the image. Privacy is built in: uploads travel over a 2048-bit encrypted connection, and files are deleted as soon as processing finishes.

This tool is best suited for family historians digitizing old albums, archivists restoring collections, and photographers looking to breathe life into vintage prints. It's also useful for content creators and publishers who need historically plausible colorized images for articles, documentaries, or social media. The straightforward upload-preview-download workflow makes it accessible to anyone, while the commercial-use license means you can use the results in published work without extra fees.