FREE BROWSER TOOL
Free AI Prompt Builder
Assemble subject, style, lighting and camera into a clean prompt — ready for Midjourney, SDXL or video models.
- Data never uploads to a server
- Free, no sign-up, no watermark
- Runs offline after loading
How to compose a prompt
- Write the subject — the one thing the image is about.
- Pick from the slots — style, lighting, composition, camera, aspect ratio. Each adds a proven descriptive term.
- Shuffle for ideas — randomize the slots when you are exploring directions.
- Copy and generate — paste into Midjourney, SDXL, Flux or any image model.
Prompt anatomy
Subject first
Most models weight early tokens more — put the subject up front, modifiers after.
One idea per slot
“soft light, cinematic” beats a pile of adjectives — each slot carries one clear instruction.
Iterate with diff
Tuning a prompt? Compare versions word-for-word with /tools/prompt-diff/.
Frequently asked questions
How do I build a prompt?
Type your subject, then pick presets for style, lighting, composition and camera (or skip them) — a clean English prompt assembles live below, ready to copy.
What structure does it output?
The convention most models expect: subject description + style/medium + lighting + composition/camera + quality terms, with parameters appended when needed.
How do Midjourney parameters work?
The aspect slot outputs --ar suffixes like --ar 16:9 — pick one and it lands at the end of the prompt, ready for Midjourney; leave it blank for other models.
Can I write the subject in Chinese?
Yes — the builder translates element choices into English phrases. For richer ideas, browse the site's prompt gallery for real examples.
Is there a negative prompt?
Yes — list elements to exclude (like blurry or watermark) and they are appended or output separately depending on the target.