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Free AI image prompt generator.
Type an idea, get a finished prompt.

400+ slash commands like /storm, /85mm and /16:9 turn a few words into a clear prompt for Midjourney, Flux, Stable Diffusion, Gemini, ChatGPT, Google Flow and Kling. Free, no sign-up.

Try it now★Star on GitHub
400+commands
8target tools
$0no account, no install

You type

a lone lighthouse on a cliff /storm /dramaticlighting /24mm /16:9
SlashFrame

You get (Midjourney format)

a lone lighthouse on a cliff, wide 24mm field of view, environmental context with natural perspective, violent storm, dark roiling clouds, lightning, wind, dramatic lighting, strong contrast between light and shadow --ar 16:9
MidjourneyFluxGeminiChatGPTFlowKling

How it works

Three steps, ten seconds

You keep control of the idea. The commands add the camera, light and style wording that image tools respond to.

1

Write your idea

Say what you want, then add commands such as /goldenhour or /85mm. Plain words like "cinematic" work too.

2

Pick your tool

Midjourney, Stable Diffusion, Flux, DALL-E, Gemini, Google Flow or Kling. The prompt is formatted the way that tool likes it.

3

Copy and paste

One click copies the finished prompt, plus a negative prompt when your tool has one. A list shows what every command added.

Watch

From idea to prompt in 15 seconds

Type a slash, pick a command, choose your tool, copy.

Demo: typing a short idea, picking slash commands from the autocomplete list, choosing Midjourney and copying the finished prompt

Examples

Same idea. Better result.

Drag the slider. The left side is the plain idea, the right side adds commands.

Result with commandsResult from the plain ideaBeforeAfter

Plain idea
With commands
Made by the project author with AI image tools: one result per prompt, shown as made. Results vary by tool and seed.

Try it

Build your prompt

Everything below runs in your browser. Click commands on the right to add them.

1Your request

Type commands, or click them in the browser on the right.

2Target tool

3Your prompt


   

   

  
What each command added

 

 






Free prompt generators
A prompt generator for every AI image tool
Each tool wants a slightly different format. Pick yours and get the right one.


Midjourney prompt generatorPrompts with --ar and --noFlux prompt generatorNatural sentences and sizeStable Diffusion prompt generatorPrompt, negative prompt, sizeChatGPT & DALL-E prompt generatorSentences and DALL-E sizesGemini prompt generatorSentences plus aspect ratioGoogle Flow prompt generator16:9 and 9:16 video framesKling AI prompt generatorWith a negative prompt line
New to prompts? Read how to write AI image prompts, or browse the command cheat sheet.







Get it
Use it where you already create
The same commands work as a Claude skill and plugin, a ChatGPT GPT, a Gemini Gem, this web page, and ComfyUI nodes.


ClaudeChatGPTGeminiMidjourneyStable DiffusionFluxGoogle FlowKlingComfyUI




Claude Code
Install the plugin in two commands. (Its id is still image-style.)
claude plugin marketplace add geevarghesekthomas84-sys/image-style-skill
claude plugin install image-style@image-style-market


ComfyUI
Prompt, upload and SVG nodes, plus ready workflows. Unzip into custom_nodes and restart.
ComfyUI-ImageStyle.zip


ChatGPT, Gemini, Claude.ai
Ready-made files for a Custom GPT, a Gemini Gem and a Claude.ai skill upload. Steps are in the README.
dist/platforms/






Keeps prompts clean
At most 8 style modifiers, and when two commands clash the later one wins.


Shows its work
Every command is listed with the exact words it added, so you can learn what each does.


Save your looks
Save a set of commands as your own recipe, or copy a link that opens your exact request.


Free and open source
MIT licensed. Everything is on GitHub.










FAQ
Questions people ask
Short answers about SlashFrame, the free AI image prompt generator.


What is SlashFrame?
SlashFrame is a free prompt generator for AI images. You type a short idea plus slash commands (like /storm, /85mm or /16:9) and it builds a finished, well-structured prompt for your image or video tool.
Is SlashFrame a free prompt generator?
Yes. It is free and open source under the MIT license. There is no account, no sign-up and nothing to install to use the website.
Which AI tools does it work with?
It formats prompts for Midjourney, Stable Diffusion, Flux, DALL-E and ChatGPT, Gemini, Google Flow and Kling. It also ships as a Claude skill and plugin, ChatGPT and Gemini instruction packs, and ComfyUI nodes.
How do the slash commands work?
Each command stands for a piece of prompt wording. For example /storm adds violent storm, dark roiling clouds, lightning and wind, and /24mm adds a wide 24mm field of view. SlashFrame puts the pieces in a sensible order, resolves clashes and keeps the prompt short.
Does SlashFrame generate images?
No. The website builds the prompt for you to copy into your image tool. It does not generate pictures itself.
Is my text sent anywhere?
No. Your request is processed in your browser. The page only asks GitHub for the public star count.
How many commands are there?
There are over 400: camera and lens, lighting, weather, style, color, portrait, product, aspect ratios, negative prompt lists and ready-made presets.
Is there a free prompt generator for Midjourney, Flux and Stable Diffusion in one place?
Yes. Pick your tool in step 2 and the same request comes out in that tool's format: Midjourney parameters, Flux sentences, or a Stable Diffusion prompt with a negative prompt and size.
Can I use the prompts commercially?
SlashFrame only writes the prompt text for you. What you may do with the images depends on the terms of the image tool you paste the prompt into.








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