Free · No signup · Runs in your browser

The AI Prompt Enhancer
built for SFW & NSFW generation.

Turn one sentence into a structured, cinematic prompt — complete with style tags, camera, lighting, and negative prompts. Optimized for Stable Diffusion, SDXL, Flux, Midjourney, and Pony Diffusion.

100% Free No signup required Local prompt history Works offline
Two Modes · One Tool

SFW for production work. NSFW for adult-art workflows.

Switch between green and red modes with a single click. Each mode loads a vocabulary bank, model recommendations, and negative-prompt set tuned for that domain — so you get usable output instantly, no fiddling with system prompts.

SFW Mode

Cinematic, editorial, commercial

For marketing visuals, concept art, character design, photography references, and any production work where safety and brand alignment matter.

  • Vocabulary tuned for cinematic, photoreal, anime, painterly, 3D, and film aesthetics
  • Recommends well-aligned models like Qwen 2.5, Llama 3.3, Gemma 2, Mistral Small
  • Negative prompts target common SD/SDXL artifacts
  • Outputs work cleanly in Midjourney, DALL·E, and commercial pipelines
NSFW Mode

Tasteful, figure-study, adult creative

For artists, hobbyists, and adult-art workflows that need uncensored prompt vocabulary without compromising on craft or composition.

  • Vocabulary borrowed from fine-art figure studies, boudoir, and editorial nude traditions
  • Recommends uncensored open-source models: Dolphin, Stheno, Lumimaid, Magnum, Nemo-abliterated
  • Strong negative prompts to prevent malformed anatomy and uncanny output
  • Hard guard against any prompt that implies minors — always
Features

Everything you need to write better prompts.

Most prompt tools dump a wall of comma-separated tags. We give you four structured blocks you can copy independently — the same way a director, DP, and gaffer break down a shot.

🎯

Structured output

Four separate blocks: enhanced prompt, style tags, camera & lighting, and negative prompt. Copy any block on its own.

🟢

SFW / NSFW toggle

One click to swap vocabulary banks, recommended models, and negative-prompt sets. Theme tints to remind you which mode is active.

📚

Local prompt history

Your last 50 prompts are saved in your browser's local storage. Click any entry to reload it — never sent to a server.

🎨

Six style presets

Cinematic, photoreal, anime, painterly, 3D render, and analog film. Each preset injects domain-specific qualifiers into the output.

Instant, no signup

No account, no API key, no rate limits. Open the page and start enhancing prompts immediately.

🔒

Private by default

Everything runs client-side. Your prompts never leave your device unless you wire it to your own local LLM endpoint.

How it works

From sentence to cinematic prompt in four steps.

Pick a mode

Toggle SFW (green) or NSFW (red). Vocabulary, models, and negatives swap automatically.

Type your idea

One sentence is enough. "A girl walking through a neon-lit alley at night" is plenty.

Choose style & aspect

Pick from 6 style presets and 5 aspect ratios. The enhancer applies domain-correct qualifiers.

Copy & generate

Copy any block independently into Stable Diffusion, ComfyUI, Forge, A1111, or Midjourney.

Recommended Local Models

Open-source LLMs we recommend for prompt enhancement.

Run any of these locally with Ollama, LM Studio, or vLLM. All listed models work on a single 24GB GPU at Q4_K_M quantization or better.

● SFW Models
● NSFW / Uncensored Models
Qwen 2.5 14B Instruct
Best structured output, excellent instruction following.
Llama 3.3 8B Instruct
Fast, well-aligned, runs on consumer GPUs.
Mistral Small 3 (24B)
Strong writing quality on a single 24GB card.
Gemma 2 9B
Solid creative writing, low VRAM footprint.
Dolphin 2.9 Llama 3 8B
Classic uncensored fine-tune, very low refusal.
L3 Stheno 8B v3.2
Tuned for creative and adult writing.
Lumimaid v0.2 12B
Mistral Nemo base, great prose quality.
Magnum v4 (12B / 22B / 72B)
Claude-style prose; popular adult creative tune.
Compatibility

Works with every major image model.

The output format — comma-separated qualifiers + structured negatives — drops cleanly into any modern diffusion pipeline.

Stable Diffusion1.5 / 2.1
SDXL1.0 / Turbo
Flux.1 dev / schnell
Midjourneyv6 / v7
Pony Diffusionv6 XL
DALL·E 3via API
ComfyUIall nodes
Automatic1111A1111 / Forge
InvokeAI5.x
Fooocus2.x
NovelAIv3
LeonardoPhoenix
Before / After

One sentence in. A directable shot out.

Real examples from the tool. Every output is structured, aspect-aware, and copy-ready.

Example 01 · Cinematic ● SFW
Input
a girl walking through a neon-lit alley at night
Enhanced
a girl walking through a neon-lit alley at night, dramatic atmosphere, cinematic still, anamorphic lens, film grain, masterpiece, highly detailed, sharp focus, 16:9 aspect ratio. Shot on ARRI Alexa 65mm. Practical neon spill; cool moonlight with warm key.
Example 02 · Photoreal Portrait ● SFW
Input
an elderly fisherman at sunrise
Enhanced
an elderly fisherman at sunrise, contemplative atmosphere, photorealistic, DSLR, natural skin texture, masterpiece, ultra-detailed, professional, 3:2 aspect ratio. Shot on Canon EOS R5, 85mm f/1.4. Golden hour rim lighting; soft diffused window light.
Example 03 · Painterly Figure Study ● NSFW
Input
classical figure study, reclining pose, candlelit room
Enhanced
classical figure study, reclining pose, candlelit room, intimate atmosphere, classical figure study, chiaroscuro, oil on canvas, masterpiece, fine art nude tradition, gallery quality, 3:2 aspect ratio. Hasselblad medium format, 80mm f/2.8. Candlelit warm ambient; low-key Rembrandt lighting.
Who it's for

Built for everyone who generates images.

🎬

Concept artists

Spin up shot-ready prompts for film, games, and animation pre-viz with directable camera and lighting language.

📸

AI photographers

Editorial, fashion, and portrait prompts with proper lens, lighting, and film-stock vocabulary.

🖼️

Hobbyist artists

Skip the prompt-engineering rabbit hole. Get usable output on the first generation, not the fiftieth.

🛠️

ComfyUI users

Drop the structured prompt and negative directly into your CLIP Text Encode nodes — no reformatting needed.

📱

Social creators

Aspect-ratio-aware enhancement for vertical, square, and widescreen content across IG, TikTok, and YouTube.

🎨

NSFW artists

Tasteful adult-art vocabulary with strong negatives — paired with model recommendations that actually work.

FAQ

Frequently asked questions

Is the JollyAI Prompt Enhancer really free?
Yes. The tool is 100% free, requires no signup, and runs entirely in your browser. There are no rate limits, no premium tiers, and no API keys. Your prompt history is stored locally on your device using browser localStorage.
Does it support NSFW prompts?
Yes. Toggle the red NSFW mode and the tool loads a vocabulary bank tuned for tasteful adult-art workflows — figure studies, boudoir, editorial nude traditions. It also recommends uncensored open-source models (Dolphin, Lumimaid, Magnum, Stheno) that work well with this kind of prompt. The tool has a hard guard against any prompt implying minors.
Which image generation models does it work with?
The output format works with every major model: Stable Diffusion 1.5, SDXL, Flux.1 (dev and schnell), Pony Diffusion, Midjourney v6/v7, DALL·E 3, NovelAI v3, and Leonardo. Pipeline-wise it works in ComfyUI, Automatic1111, Forge, InvokeAI, and Fooocus.
What's the difference between SFW and NSFW mode?
SFW mode uses cinematic, editorial, and commercial vocabulary and recommends well-aligned models. NSFW mode uses fine-art figure-study vocabulary and recommends uncensored open-source LLMs. The negative prompt sets and recommended models also differ — NSFW negatives focus harder on anatomy correctness, since adult art requires it.
Do you store my prompts on a server?
No. All prompts and history are stored only in your browser's localStorage. Nothing is ever sent to a server. You can clear history at any time from the sidebar.
Can I run this with my own local LLM?
Yes. The tool can be configured to call your local Ollama (localhost:11434), LM Studio, or vLLM endpoint for fully private prompt enhancement powered by your own model. By default it uses a built-in rule-based generator that works instantly without any backend.
What are the best local LLMs for prompt enhancement?
For SFW: Qwen 2.5 14B, Llama 3.3 8B, Mistral Small 3 (24B), or Gemma 2 9B. For NSFW: Dolphin 2.9 Llama 3 8B, L3 Stheno 8B, Lumimaid v0.2 12B, or Magnum v4. All run on a single 24GB GPU at Q4_K_M quantization.
How is this different from ChatGPT or Claude for prompt writing?
ChatGPT and Claude refuse most NSFW workflows and produce inconsistent prompt formatting. This tool is purpose-built for image-prompt structure: every output has the same four blocks (prompt, style, camera/lighting, negative), it understands aspect ratios, and it has dedicated SFW/NSFW vocabulary banks.
Can I use the prompts commercially?
Yes. The tool generates prompts; you own anything you generate with them. Commercial usability depends on the image model and license you're using (e.g. SDXL is commercially permissive; some Pony fine-tunes are not).
Does it work on mobile?
Yes. The interface is fully responsive and works on phones, tablets, and desktops. History syncs to whatever device you used to generate it (since it's stored in that browser's localStorage).

Stop wrestling with prompts.
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