Freeflo offers a regularly updated library of free image prompts and styles that can be used in your favorite image generators like Midjourney and Stable Diffusion. You can use the search function to search for a specific style, or simply browse the library to see see if there are any images you like. Clicking on any image lets you see the prompt that was used to create it, you can then copy or edit the prompt and use it to create your own images.
