Midjourney’s customization parameters are truly groundbreaking. They allow you to tell the AI which parts of the prompt should be more important than others, so that the generated images are closer to your imagination.

But sometimes you’ll find that these weighted prompts don’t actually do anything at all. This is quite often the case with image weights. But it’s nothing that can’t be easily fixed. Here’s everything you need to know to fix Image Weight parameters on Midjourney when they’re not working.

There are a number of reasons why your Image Weight (–iw) argument may not return results for the generated images.

Everything from the Midjourney version you're using to the image weight value you entered determines whether your generated image will benefit from the image weight parameter, or even whether it will be registered. Your image weight argument in the prompt must also be typed correctly, or you will receive an error from Midjourney's Discord server.