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AI Image Settings Cheat Sheet: Aspect Ratios, Styles and Quality

Oct 3, 2026 2 min read

The words in an image prompt matter most, but a few settings make a big difference too. Use this as a quick reference.

Aspect ratios by use

  • 1:1: profile pictures, product thumbnails, Instagram feed
  • 4:5: Instagram portrait posts, product listings
  • 2:3 or 3:4: posters, book covers, portraits
  • 3:2: classic photography, blog images
  • 16:9: YouTube thumbnails, presentations, website headers
  • 9:16: Stories, Reels, TikTok, phone wallpapers
  • 21:9: cinematic banners and wide landscapes

Choose the ratio before you write the prompt; composition depends on it. In Midjourney use --ar 16:9; in other tools pick the size or ratio option.

Describing style

Combine a medium (photo, watercolour, 3D render, vector, oil painting), a look (cinematic, minimalist, retro, editorial) and lighting (golden hour, soft studio light, neon). For photos, camera details such as “85mm lens, shallow depth of field” are a strong signal of realism.

Useful Midjourney parameters

  • --ar: aspect ratio
  • --stylize: how much artistic interpretation (lower = closer to your words)
  • --style raw: less default “beautification”, good for realism
  • --chaos: more variety between the four results
  • --no: things to exclude, e.g. --no text

Quality tips for any tool

  • Describe the scene in full sentences rather than long keyword lists.
  • Put the most important subject first.
  • Keep text in images short and in quotes.
  • Generate several options, then refine the best one instead of starting over.

Put it into practice

Browse hundreds of free, ready-to-copy prompts for ChatGPT, Claude, Midjourney and more.

Browse prompts
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