Turn your Existing images into Anime or Manga Style
ArtVenture is a multiplayer SaaS platform designed to revolutionize generative AI production management. Currently, they are offering a very neat conversion tool that changes your current existing images or pictures into Anime style among other options such as manga, cartoon, ghibli, and semi-real for example.
- The service is totally free to use, but it has a credit system - for example, you can get more credits by inviting people to Art Venture.
There aren't too many limitations on the platform you can upload up to 10MB file and it has to be max 1024x1024 in size to get started. You can use upscaling tools later to make it bigger. Here are some example images of their service.

You can adjust the creative intensity on the website to get more realistic or more creative results depending on what you are trying to do. There are of course still some small inaccuracies in the quality of the images and how they transform from the original stuff, but mostly when you look at the poses those are still the same.
- They are also planning to release a feature for Photo restoration in the near future, which is being used for restoring, sharpening, and repairing existing images with their AI tool.
Last they have an AI ArtToy Function which allows even some custom prompting, this is something I didn't try to great extent but it may be something you might be interested in their service.

As last thoughts I think this is rather good free service, its simple and does its trick mostly. I Might have to revisit their service once more features are being added in, but like I said earlier this is totally free service and by signing-up with your email you get 20 free credits and by giving feedback and some other mini-tasks you will get more credits as you go.