Midjourney v7 aspect ratio cheat sheet (all working parameters 2026)
Category: AI Image Generation Difficulty: Beginner Updated: 2026-05-26
Complete reference of every valid aspect ratio parameter for Midjourney v7, with exact --ar values for Instagram, TikTok, YouTube Thumbnails, wallpapers, and print formats.
📐 Full Cheat Sheet Table
| Use Case | --ar Parameter | Resolution |
|---|---|---|
| TikTok / Reels / Shorts | --ar 9:16 | 1080x1920 |
| Instagram Post Square | --ar 1:1 | 1440x1440 |
| YouTube Thumbnail | --ar 16:9 | 1280x720 |
| Desktop Wallpaper 4K | --ar 16:9 | 3840x2160 |
| Twitter/X Header | --ar 3:1 | 1500x500 |
| A4 Print / Poster | --ar 7:10 | 2480x3508 |
💡 Pro Tip
Midjourney v7 automatically accepts custom aspect ratio values between 1:4 and 4:1 without using the --style raw flag.