Midjourney parameters give you precise control over your generations. Add them to the end of your prompt with a double dash (--).

Aspect Ratio (--ar)

Control the shape of your image:

• --ar 1:1 — Square (default). Great for profile pictures and social media posts.
• --ar 16:9 — Widescreen. Perfect for desktop wallpapers, YouTube thumbnails, and presentations.
• --ar 9:16 — Vertical. Ideal for phone wallpapers, Instagram stories, and Pinterest.
• --ar 3:2 — Classic photo ratio. Good for prints and traditional compositions.
• --ar 21:9 — Ultra-wide. Cinematic banners and panoramic scenes.

Example: "a cyberpunk city skyline at night --ar 16:9"

Stylize (--s)

Controls how "artistic" Midjourney makes the image:

• --s 0 — Minimal artistic interpretation; follows your prompt literally
• --s 100 — Default balance of creativity and prompt adherence
• --s 250 — Highly stylized; Midjourney takes more creative liberty
• --s 750 — Maximum artistic interpretation

Chaos (--c)

Controls how varied the four initial results are:

• --c 0 — All four results look similar
• --c 50 — Moderate variation (default)
• --c 100 — Maximum variety; wildly different interpretations

Use high chaos when exploring ideas, low chaos when you know exactly what you want.

Quality (--q)

Controls rendering quality and generation time:

• --q .25 — Rough draft, fastest
• --q .5 — Less detail, faster
• --q 1 — Default quality
• --q 2 — Higher detail, uses more GPU time

Negative Prompting (--no)

Exclude elements from your image:

• "--no text" — Removes text/lettering
• "--no people" — Removes human figures
• "--no watermark" — Removes watermark-like artifacts

Example: "a peaceful beach scene --no people --no text --ar 16:9"

Seed (--seed)

Use a seed number to reproduce similar results. If you like a composition but want to tweak colors or style, keep the same seed and modify the prompt.