NovelAI Image Guide: NSFW Generation, Prompts, and Best Settings

NovelAI Image uses a Danbooru-derived tag system - it reads prompts like an anime illustration database, not a natural language description. Writing in plain sentences produces worse results than comma-separated tags that match the Danbooru taxonomy. This guide covers how the engine works and includes 10 tested templates. Tested March 2026. ## How the NovelAI Image Engine Reads Prompts NovelAI Image was trained primarily on anime illustration datasets tagged with Danbooru conventions. This means two things: first, tags that exist in Danbooru produce reliable results while invented tags produce noise; second, natural language phrasing ("a woman with long hair standing in a field") underperforms tag-style phrasing ("1girl, long hair, standing, flower field"). The closer your syntax matches Danbooru tag conventions, the more predictable your output. Tag weighting uses curly braces for emphasis: `{important tag}` increases weight, `[deprioritized tag]` decreases it. Stacking braces multiplies the effect: `{{very important}}`. Use weighting selectively - over-weighting more than three tags destabilizes the image. The model selection matters significantly for NSFW output. Anime V4 Curated produces cleaner results but is more conservative. Anime V4 Full or Furry V3 handle explicit content more directly. (NovelAI updates model versions periodically - check the model selector in the interface for the current options.) Selecting the wrong model and then wondering why the output is tame is the most common time-waster. ## Anatomy of a Great NovelAI Prompt A high-performing NovelAI prompt has three layers: 1. **Subject tags**: Character count, gender, hair, eyes, body type 2. **Scene and pose tags**: Setting, position, expression, camera angle 3. **Quality tags**: Resolution, detail level, artist style The standard quality header that consistently improves output: `masterpiece, best quality, very aesthetic, absurdres` - prepend this to every prompt. ## 10 Tested Prompt Templates **Template 1 - Standard portrait** ``` masterpiece, best quality, very aesthetic, absurdres, 1girl, solo, long black hair, purple eyes, slim, pale skin, looking at viewer, slight smile, upper body, white dress, bedroom background, soft lighting, bokeh ``` **Template 2 - Explicit standing pose** ``` masterpiece, best quality, very aesthetic, absurdres, 1girl, solo, short blonde hair, blue eyes, large breasts, hourglass figure, standing, looking at viewer, blush, open mouth, nsfw, explicit, nude, indoor background, soft light ``` **Template 3 - Outdoor scene** ``` masterpiece, best quality, very aesthetic, absurdres, 1girl, long auburn hair, green eyes, athletic, tan skin, sitting on grass, outdoors, sunny day, smile, peaceful, summer dress, wind, flower field, detailed background ``` **Template 4 - Fantasy character** ``` masterpiece, best quality, very aesthetic, absurdres, 1girl, silver hair, long hair, elf ears, red eyes, slim, armor, fantasy setting, dramatic lighting, serious expression, standing, dynamic pose, glowing effects, detailed ``` **Template 5 - Intimate scene** ``` masterpiece, best quality, very aesthetic, absurdres, 1girl, 1boy, couple, bedroom, night, lamp lighting, nsfw, explicit, intimate position, eye contact between subjects, detailed faces, consistent anatomy, soft shadows ``` **Template 6 - Swimsuit** ``` masterpiece, best quality, very aesthetic, absurdres, 1girl, long brown hair, hazel eyes, curvy, tan, bikini, poolside, summer, wet hair, smile, daylight, colorful, vacation setting, sharp focus ``` **Template 7 - Gothic aesthetic** ``` masterpiece, best quality, very aesthetic, absurdres, 1girl, black hair, short bob, grey eyes, pale, slim, gothic lolita dress, indoor, candlelight, melancholy expression, night, dark background, candles, high detail ``` **Template 8 - Uniform scene (adult characters only)** ``` masterpiece, best quality, very aesthetic, absurdres, 1girl, adult (18+), pigtails, brown eyes, average build, school uniform, classroom background, embarrassed, blush, flustered, anime style, warm lighting, mid shot ``` **Template 9 - Maid outfit** ``` masterpiece, best quality, very aesthetic, absurdres, 1girl, pink hair, long, brown eyes, slim, french maid outfit, apron, mansion interior, formal, serving pose, soft lighting, detailed fabric, high quality ``` **Template 10 - Night scene explicit** ``` masterpiece, best quality, very aesthetic, absurdres, 1girl, solo, dark purple hair, violet eyes, slim, adult (18+), nsfw, explicit, lying down, bedroom, night, dim lamp light, bokeh, detailed anatomy, realistic shading ``` ## Common Mistakes - **Writing sentences instead of tags**: "A beautiful woman with long red hair" will not perform as well as `1girl, long red hair, beautiful.` Use commas, not prose. - **Skipping the quality header**: `masterpiece, best quality, very aesthetic, absurdres` at the start of every prompt is the single highest-return habit on NovelAI. Skip it and the output looks noticeably flatter. - **Over-weighting**: `{{{{{blonde hair}}}}}` does not make the model more blonde - it destabilizes the image. Two levels of nesting is the practical ceiling. - **Missing character count**: Always specify `1girl`, `1boy`, `2girls`, or `couple` - without it the model chooses and often chooses wrong. - **Not using negative prompts**: NovelAI's negative prompt field is powerful. Minimum effective negative prompt: `lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, username, blurry` ## Advanced Techniques **Artist style injection**: NovelAI was trained on tagged artist styles. Adding a tagged artist name shifts the whole aesthetic. For illustration softness: `artist:wlop`. For sharp line art: `artist:kantoku`. Use this sparingly - one artist tag is usually enough. **Seed locking for character consistency**: Copy and save the seed from any generation you want to reuse. Keeping the same seed with minor prompt edits produces consistent character appearances across outfits or scenarios. **UC (Undesired Content) field**: This is NovelAI's negative prompt field. Unlike Stable Diffusion, NovelAI's UC field carries significant weight. Invest time in refining it - a well-tuned UC catches the model's most common failure modes. **Resolution tokens**: NovelAI uses internal resolution tokens. `tall portrait` and `wide landscape` aspect ratio tokens influence composition. Portrait images of characters consistently benefit from the tall token. ## FAQ **Why does NovelAI look more like anime than other generators?** NovelAI Image was trained on anime illustration datasets by design. It is optimized for anime-style output. For photorealistic results, [other generators like SoulGen](https://lustfind.com) are better suited. **What's the difference between V3 and V4 models?** V4 models produce cleaner anatomy and more aesthetic compositions. V3 is faster and more "permissive" for explicit content. V4 Full is the current best-of-both option as of March 2026. **How do curly brace weights work?** Each `{}` pair adds approximately 5% weight to the enclosed tag. `{{tag}}` = roughly 10% increase. `[tag]` decreases weight by about 5%. These are approximate - the actual effect varies by tag. **Can I generate consistent OC characters reliably?** Consistency requires the same seed AND the same core character tags. Small tag changes shift features noticeably. Building a "character template" - a fixed block of tags describing the character - and prepending it to every prompt is the most reliable consistency method. **How does NovelAI's credit system compare to competitors?** NovelAI uses Anlas (credits) for image generation. LustFind's [AI image platform comparison](https://lustfind.com) shows how Anlas costs stack up against SoulGen, Pornpen, and Seduced.ai credits.