Colorize Photo

What Colorize Photo is

Colorize Photo is a free web tool that adds color to black-and-white pictures using an on-device neural network. Auto mode predicts colors with the ECCV 2016 “Colorful Image Colorization” model, which downloads once at about 39 MB. Users can choose from eight tonal palettes or make touch-ups with a manual brush. The tool supports batch processing without a stated photo-count limit and allows the batch to be downloaded together. It accepts JPG, PNG, WebP, and other formats the browser can open, and exports JPEG, PNG, or WebP with adjustable quality and size controls. The longest side can be up to 4096 px, and each photo has 15 undo steps. Users can paste images from the clipboard and copy colorized results as PNG. Processing runs in the browser using Canvas API and WebAssembly; the maker says photos are not uploaded, stored, or tracked. The tool requires no installation or signup and has no watermark.

Who it suits

Colorize Photo suits people who want to colorize black-and-white images in a browser, including users processing batches. Its local processing may appeal to people who do not want photos uploaded, stored, or tracked by the maker.

Limits

The free plan caps the longest image side at 4096 px and provides 15 undo steps per photo. It has no stated limit on the number of photos.

Getting started

1. Open Colorize Photo in a web browser.
2. Load JPG, PNG, WebP, or another image format your browser can open, or paste an image from the clipboard.
3. Choose Auto mode or a tonal palette and make any touch-ups with the brush.
4. Export the result as JPEG, PNG, or WebP, or copy it as a PNG.

Verdict

Colorize Photo pairs automatic colorization with palette choices, brush edits, and batch export. Its stated 4096 px maximum and one-time model download are useful limits to note.