I am kinda new to the site and I just got approved for my first story so I was just curious how to add images, I want to put my best foot forward with my first attempt.
Specifically this page https://chyoa.com/chapter/How-to-add-a-picture-to-the-thread.251850 Is what you need. Remember, you'll need to upload your pic to another site first as Chyoa is not set up for image hosting and when you copy the images link make sure the url ends in .jpg or .gif
Ah, yes, good point. I find ImgBB is good for hosting. Most sites will remove your images after several months to clear space, and your images will randomly disappear from your story, but this hasn't happened to me with ImgBB (yet). Also, Imgur is good, easy to use, and not likely to stop hosting for a long time, so if you're fine with making an account, that's a rather efficient choice.
I'm sorry, I'm really new at this and also confused. I tried:  and  and it just doesn't work.. In the first example the link&image just vanishes leaving an empty space in the chapter while in the second it's a broken image
Classic mistake. You have to direct link the picture. https://img119.imagetwist.com/i/69267/avj9zbqst8bs.jpg/9s9cjr.jpg this link should work, your first example was correct otherwise. If you want a step by step idiot proof guide: https://chyoa.com/chapter/Actually-no-we-won't:-Introducing-how-to-upload-images.969206