Your Essential Guide to Midjourney Parameters
- kylixie
- Apr 28, 2025
- 4 min read
Ready to take your Midjourney images to the next level? Understanding parameters is key. These are special commands you add to your prompts to control aspects of your image generation. They let you guide Midjourney more precisely.
Think of parameters as fine-tuning knobs. They aren't always needed, but when you want a specific look or behavior, they are very helpful. Midjourney has official documentation that lists them all. We will look at some of the most common and useful ones here with examples.
Getting Started with Parameters
Parameters usually start with two dashes (`--`). You add them at the end of your text prompt, usually after a space. Most parameters need a value, like a number or another word.
Let's explore a few key parameters you will likely use.
Controlling Image Shape: Aspect Ratio (`--ar`)
The aspect ratio determines the width and height of your image. This is a common and useful parameter.
You use `--ar` followed by two numbers separated by a colon (e.g., `--ar 16:9`, `--ar 4:5`). The first number is the width, the second is the height.
`--ar 1:1`: A square image (this is the default ratio).
`--ar 16:9`: A wide, cinematic look (landscape).
`--ar 9:16`: A tall look, good for phone screens or portraits (portrait).
`--ar 4:5`: A standard photo print size (portrait).
Using `--ar 4:5` will give you a taller image than it is wide. If you switch it to `--ar 5:4`, the image will be wider than it is tall.
Adding Variety: Chaos (`--chaos`)
The `--chaos` parameter influences how much the results vary from each other and from your original prompt. Use `--chaos` followed by a number between 0 and 100.
`--chaos 0`: Results are very similar to each other.
`--chaos 100`: Results are very unusual and surprising, possibly very different from the prompt.
If you imagine prompting for "one fried egg on a white background" and use `--chaos 100`, you might get something very strange, maybe not even an egg.
Balancing Image and Text Prompts: Image Weight (`--iw`)
If you are using an image as part of your prompt, `--iw` controls how much influence that image has compared to your text prompt. Use `--iw` followed by a number. The default is usually 1.
You can typically use values like 0, 1, or 2, depending on the Midjourney version. A higher number means the image prompt has more influence.
Removing Elements: No (`--no`)
This is a very helpful parameter when you want to exclude certain things from your image. Use `--no` followed by the things you *don't* want to see.
For example, if you create a room scene using a detailed prompt like:
"old computers with glowing green monitors in a big room, The Matrix nostalgic mood, infrared dark and spooky, 1980s Farm Security Administration aesthetics, vintage aesthetics internet inspired, atmospheric and dreamy in a style of retro futuristic cyberpunk --ar 16:9 --s 750"
You might notice chairs in the images. If you didn't want chairs, you could add `--no chairs` to the end of the prompt.
Adding `--no chairs` attempts to tell Midjourney to avoid those items. It doesn't always completely remove everything, but it usually helps a lot.
Parameters like `--no` give you more control over your output. To make this process even easier and manage multiple prompts with different parameters, consider trying the Midjourney Automation Suite from TitanXT. It can streamline your workflow and help you experiment with parameters more efficiently.
Controlling Style Strength: Stylize (`--s`)
The `--stylize` (or just `--s`) parameter affects how strongly Midjourney's default aesthetic style is applied to your image. Use `--s` followed by a number. The range can vary, but numbers often go up to 1000 or more depending on the version.
Lower numbers mean the result is closer to your prompt, less artistic flair.
Higher numbers mean Midjourney applies more of its own style, which can make images look very artistic or beautiful.
In the example prompt above for the computer room ("...--ar 16:9 --s 750"), setting `--s 750` pushed the image towards Midjourney's artistic interpretation.
Other Useful Parameters
Here are a few other parameters you might encounter:
`--q` Quality: Controls rendering time and detail (default is often 1).
`--stop`: Stops the job partway through (0-100%), creating a less finished image.
`--style`: Can apply specific preset styles like `--style raw` (more realistic) or styles based on numbers or letters.
`--tile`: Creates images that can be used as repeating patterns.
`--v` Version: Selects a specific Midjourney model version like `--v 6` (the latest) or `--v 5.2`. You can also use `--niji` for an anime-specific model.
`--weird`: Similar to chaos, adding unusual qualities (uses a number like `--weird 0-1000`).
Putting Parameters to Work
As you saw with the "no chairs" example, adding just one parameter can significantly change the final image. Experimenting with these options helps you get closer to your vision.
Managing many prompts and parameter variations can become time-consuming. Tools like the Midjourney Automation Suite from TitanXT are designed to help users handle multiple jobs, prompts, and parameter sets, making the process more efficient.
Conclusion
Midjourney parameters offer powerful ways to control your image generation process. Understanding how to use parameters like `--ar`, `--no`, and `--s` allows you to move beyond basic prompts and create images that match your specific ideas.
Start by trying a few parameters on simple prompts. See how they change the output. As you get more comfortable, you can combine them for more complex results. Have fun exploring the possibilities!
If you find yourself creating many images and using parameters frequently, remember that automating your process can save time and effort. Check out the Midjourney Automation Suite from TitanXT to see how it can help.
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