sysmaya/ai-image-colorizer

AI Image Colorizer is a free browser based tool that adds color to old black and white photos. You upload a photo, and it turns it into a colorized version, all without sending your image to any server. Everything happens directly inside your own browser, so your pictures stay completely private and nothing is uploaded, tracked, or stored anywhere else. The tool runs on a technology called ONNX Runtime, which allows an AI model to run directly on your device using your browser's built in capabilities, rather than needing a remote server to do the processing. The specific AI model it uses is called DeOldify, an existing open source project built for restoring and colorizing old photographs. Because the whole process happens locally, there are no accounts to create, no ads, and no tracking of any kind. Using it is simple: you drag and drop or select a black and white photo in a common format like JPG, PNG, or WEBP, the model processes it in your browser, and then you download the finished colorized result. The very first time you use it, it may take a few seconds longer while the AI model itself loads into your browser, but after that it should run faster for additional images. The entire tool is built to work as a single self contained HTML file, which makes it simple to host or run. It works in any modern browser that supports WebAssembly and ONNX Runtime, on both desktop and mobile devices, and the author recommends having at least 4GB of RAM for the best performance. An internet connection is only needed the first time, to download the AI model. It is released under the MIT License.