Write image prompts that get the picture in your head, not a random guess
Short answer
A free guide to prompting for AI image generation in 2026: the parts of a great image prompt, subject, setting, composition, lighting, camera and lens, style, color, text in images, aspect ratios, reference images, editing prompts, model differences, examples, and rules.
Modern image models, such as Nano Banana 2.1, GPT Image 2.5, FLUX 3 Image, and Midjourney, understand full sentences. Describe the image like you are briefing a photographer or illustrator, clearly and specifically.
If you can picture it clearly, you can describe it clearly.
02
The parts of a great image prompt
Subject
Who or what, with key details
Action
What they are doing
Setting
Where, and when
Composition
Framing and angle
Lighting
Type, direction, and mood
Style
Photo, illustration, 3D, or painting
Color
Palette and grade
Format
Aspect ratio and purpose
03
Be specific about the subject
Vague
A woman in a cafe
Specific
A woman in her 30s with short curly hair and a green wool coat, reading a paperback at a window table in a small Paris cafe
04
Composition and camera
Shot size: close-up, medium shot, wide shot
Angle: eye level, low angle, top-down
Lens: 35mm for natural, 85mm for portraits, wide-angle for drama
Depth of field: shallow for blurred backgrounds
Placement: subject on the left, space for text on the right
05
Lighting and mood
Golden hour, soft window light, or studio softbox
Hard sunlight for contrast
Neon or candlelight for atmosphere
Say the mood: calm, tense, joyful, mysterious
06
Style without copying artists
Describe the style in your own words instead of naming living artists:
“Flat vector illustration with bold outlines”
“Soft watercolor with visible paper texture”
“Realistic product photo on a white background”
“Cinematic film still, muted colors”
07
Text in images
Put exact words in quotes
Say where the text goes and its style
Keep text short
Check spelling in every result
A bold poster that says “SUMMER SALE” in large white letters at the top, on a bright coral background.
08
Aspect ratios
1:1
Feeds and profile images
4:5
Instagram and Facebook feeds
9:16
Stories, Reels, and phone wallpapers
16:9
Thumbnails, banners, and slides
09
Use reference images
Upload a product or character image to keep it consistent
Say what to keep: “Keep the product, label, and colors unchanged”
Say what to change: background, lighting, or outfit
Use the same references for a whole series
10
Editing prompts
Change one thing at a time
“Make the sky a sunset, keep everything else the same”
“Remove the person in the background”
“Change the jacket to navy blue”
11
A full example
A close-up product photo of a matte black water bottle on a wet granite rock beside a mountain stream, morning mist, soft side light, shallow depth of field, cool blue and green tones, realistic, space for text on the left, 4:5.
12
Use images responsibly
Do not create realistic images of real people without consent
Do not copy logos, characters, or brands
Label realistic AI images where platforms require it
Check each tool’s commercial-use terms
The golden rule
Do not type a few words and hope. Describe the subject, setting, light, style, and format, then refine one change at a time.
Subject
Setting
Camera
Light
Style
Text
Format
Take your last image prompt, add camera, lighting, and format details, and compare the results.
What does “How to Prompt for AI Image Generation” cover?
It has 12 sections, starting with “How image models read prompts”, “The parts of a great image prompt”, “Be specific about the subject” and “Composition and camera”, plus 8 more sections.
How long does it take to read?
About 2 minutes. Every section is a short, self-contained card, so you can jump straight to the part you need.
Is this guide free?
Yes. The full guide is free to read on this page, with no sign-up.
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