If you want a powerful AI-powered service to turn your portrait photos into cartoons, VanceAI is a good option. The suite of tools includes AI Image Cartoonizer, which can turn your photos into cartoon or sketch styles. VanceAI also lets you process multiple files at once and has tiered pricing, so it's good for professionals and businesses.
Another option is Reface, which offers a range of tools for creating content, including the ability to turn photos into cartoons. Reface is designed to be easy to use and offers both personal and semi-professional subscription options, so it's good for personal fun and for marketing campaigns.
If you want a more basic, free tool, Cartoonify lets you cartoonize photos with no artistic ability. It's good for creating colorful cartoons quickly and easily, and good for beginners and experienced artists.
If you're looking for a specialized face transformer, Toonify is worth a look. It uses a variety of models to transform your face into animated characters and has editing controls for fine tuning. You can pay for different tiers of service, including a free option that lets you use the Classic model unlimited times.