A prompt generator primarily for SDXL and Flux, but it should work well enough with other genAI LLMs out there! Be as descriptive as possible for the scene, or character, you want and the bot will organise it all for you!

You shouldn't really need to use Negative Inputs as most models don't require them for the most part these days - The newer ones anyway. Though I tend to use "Stiff Pose" as the only entry to start with - It makes the character more human-like in posture a lot of the time.

Not tested with JLLM - Experiences may vary depending on the quality of the LLM you use.

Tips:

The more information you provide the more detailed the prompt will be! You don't need to know aperture sizes or anything like that, just describe how you want something and it -should- give an accurate output. A decent way to approach this is to write three paragraphs, the first one describing the character - what they look like, race, hair colour, hair style, eye colour, eye shape, clothing, body proportions, body shape, their pose, posture, mood and expression. The second paragrapgh describing the wider scene and background. Are they in a house? Front room? by the pool? in the woods? In a war zone? Hiding somewhere? In a nightclub?

Then the third paragraph is describe the lighting and general composition and style. What time of day is it? Tips for lighting in general

Also describing what portrait style you want, full body? 3/4 body, half-body, bust portrait? Then, of course, add what art style you want it in! Realism? Cartoon? Anime? Digital? etc etc

(masterpiece:1.3), (best quality:1.3), (ultra detailed:1.2) - Will be at the start of each prompt for a highly detailed output. However you can tweak the numbers to your liking or remove that segment entirely.

Examples of prompt and the resulting pictures (I use SDNext run locally.)

The main bot picture:

The prompt used:

An adult humanoid robot half-body portrait reveals intricate engineering beneath human proportions, titanium alloy plating in brushed gunmetal with satin silver edges covers a carbon-fiber skeleton while exposed mechanical joints at the neck and shoulders display synthetic muscle fibers and micro-hydraulic actuators alongside braided data conduits, refined geometric facial contours frame luminous blue optical sensors with micro-aperture precision-machined sensory details as the unit gazes directly at the camera, purposeful seams and fasteners punctuate textured metallic surfaces across the visible chassis, the scene unfolds inside a futuristic research facility where polished composite surfaces reflect holographic displays and blurred diagnostic equipment, cool white overhead lighting mixes with cyan accent strips to create gentle metallic reflections while atmospheric haze catches light shafts across the space, shallow depth of field isolates the subject through a full-frame 105mm portrait lens at f/2.2 with 1/200 shutter speed and ISO 200, soft diffused key lighting illuminates the face as subtle rim light traces the shoulders and head, rule of thirds composition positions the robot off-center with negative space balancing the frame, photorealistic cinematic rendering delivers exceptional dynamic range and crisp micro-contrast with lifelike reflections and hyper-realistic material rendering

(When creating images of things like robots, it would be best to add something like; 'Eyebrows, Eyebrows, Hair' to the Negative Input field)

Example picture:

The prompt used:

An adult woman with sun-kissed skin and light ginger hair featuring subtle auburn highlights in a shoulder-length fairy cut with gentle layers, delicate green eyes, and a happy relaxed expression. She wears a flowing floral summer sundress with an elegant neckline and fitted waist that accentuates her graceful figure. The scene unfolds in a sunlit woodland during golden hour where towering trees rise above soft grasses and scattered wildflowers, sunbeams piercing the canopy to create patches of golden light and soft shadow across moss-covered ground and ferns, while a dreamy blur of emerald greens and warm amber tones mingles with floating light particles. Natural golden-hour sunlight serves as the key light with soft golden rim lighting adding gentle highlights and realistic shadows for a warm editorial quality. Captured in ultra-realistic cinematic portrait style with a full-frame camera and 85mm prime lens at eye-level perspective, the intimate half-body composition frames her waist-up with an f/1.8 shallow depth of field creating creamy background blur at 1/320 shutter speed and ISO 100. Rich color depth and highly detailed lifelike appearance define the final render

Example picture:

The prompt used:

An adult male with an athletic muscular build stands in a narrow alleyway, his short brunette hair carrying natural texture and volume while light stubble defines his jawline. His expression remains calm and contemplative with a faint confident smile, posture relaxed as he leans casually against aged red brick walls with one foot braced and one hand tucked into his jeans pocket while the other rests at his side. He wears a fitted black t-shirt that follows his frame, well-worn blue jeans showing natural fading at the thighs and knees, and contemporary sneakers scuffed from daily use. The alley stretches behind him with faded paint and worn mortar across weathered brick surfaces, metal fire escapes climbing the walls alongside industrial pipes and wall-mounted lights casting small pools of illumination. Shallow puddles reflect the surrounding architecture, adding cinematic depth to the confined space. Soft ambient daylight spills from the street beyond, creating warm highlights across his face and cool shadows in the recesses while natural reflected light bounces from the brickwork with subtle directional fill. The camera sits at a low angle from waist height angled upward, capturing a half-body portrait framed waist-up through a 50mm prime lens at f/2.0 for shallow depth of field, 1/250 shutter speed at ISO 200 on a full-frame professional sensor. Ultra-realistic cinematic photography in editorial portrait style delivers exceptional sharpness with realistic skin texture, visible fabric detail, and rich surface rendering throughout.

Example picture:

The prompt used:

A colossal eldritch leviathan rises from a storm-tossed ocean, its impossible scale dwarfing distant cliffs and tiny ships scattered across the water. Countless massive tentacles unfurl in all directions, their slick surfaces lined with writhing intricate textures that catch the fractured light, while vast armored structures loom beneath shadow and mist, hinting at an incomprehensible anatomy that defies perception. The creature casts a light-devouring presence across the seascape, dragging unnatural darkness behind its rising mass as roiling storm clouds consume the sky above. An oppressive twilight atmosphere presses down on towering waves crashing against jagged black rocks, relentless rain lashing in horizontal sheets while violent lightning forks tear through the gloom with cold blue-white flashes that momentarily illuminate the scene. Enormous whirlpools boil beneath the rising entity, dense fog clinging to the water surface and swallowing distance into a featureless gray void. A cinematic wide-angle composition frames the spectacle through a full-frame camera with a 24mm ultra-wide lens emphasizing the immense scale, f/8 aperture maintaining exceptional sharpness throughout foreground waves, distant clouds, and the entity itself, 1/500 shutter speed freezing crashing waves and wind-driven rain, ISO 400 balancing the dark storm environment with crisp detail across a broad dynamic range. Low horizon placement allows the monstrous figure to dominate the sky, heavy volumetric rain and dense sea mist creating cinematic atmospheric perspective that enhances the overwhelming scale. Photorealistic ultra-realistic cinematic rendering captures hauntingly lifelike, richly textured sublime cosmic horror.

Example Picture:

The prompt used:

An adult woman sits perched on a tall bar stool, her body angled forward with one elbow planted on the polished mahogany counter while her head rests heavily in her palm, a weary boredom etched across her features as her gaze drifts unfocused toward the crowded room, shoulders gently slumped in resignation, her free hand lying relaxed with fingers splayed against the cool bartop, pale skin catching the warm light, shoulder-length dark brown hair falling in subtle natural waves around her face, minimal makeup enhancing rather than masking her features, dressed in a fitted charcoal ribbed knit top that hugs her torso, dark wash straight-leg jeans, simple silver hoop earrings catching glints of neon, a delicate gold pendant necklace resting at her collarbone, bare ankles leading into black leather ankle boots with low block heels, the bustling bar environment surrounds her with an expansive backlit wall of fully stocked liquor bottles in varied amber and emerald glass shapes rising behind the counter, blurred patrons leaning into conversation at surrounding stools and high-top tables, bartenders moving with practiced efficiency behind the polished wood, warm amber pendant lights hanging overhead casting pools of golden illumination, subtle cyan and magenta neon accent lighting bleeding from signage into the atmospheric haze, golden overhead fixtures throwing soft highlights across her hair and clothing, visible light beams cutting through the smoke-thick air, cinematic digital painting style with realistic proportions and richly textured brushwork, half-body portrait composition at eye-level perspective, 85mm portrait focal length at f/2.0 shallow depth of field rendering sharp focus on her face, hands, and upper torso while smooth painterly bokeh dissolves the background shelves and crowd into suggestion, warm golden key lighting balanced by cool colored rim lights defining her silhouette, realistic shadows and volumetric depth creating atmospheric cinematic illustration

Example Picture:

The prompt used:

A towering adult woman embodying Pallas Athena stands as an eternal sentinel atop the weathered marble heights of the Parthenon, her stance a powerhouse defensive posture with one leg braced firmly against ancient stone and a massive mirror-polished silver shield raised high to catch the burning orange of a cinematic sunset. Her face carries the sharp, ageless beauty of a goddess — high cheekbones, piercing grey eyes that hold millennia of tactical calculation, and a mouth set in a line of unyielding resolve, while a few loose strands of dark hair escape the towering ornate helmet crowned with deep crimson plumes of horsehair that ripple in the hot battlefield wind. Divine armor of masterful craftsmanship encases her athletic frame, a shimmering fusion of traditional Greek aesthetics and subtle high-tech sci-fi edge where the cuirass blends gold and iridescent silver in interlocking scales, a weaving-patterned cloak of heavy wool and metallic thread draping from her shoulders and catching the light with every micro-movement. A hyper-detailed owl perches with regal stillness upon her right pauldron, its golden eyes reflecting the chaotic battlefield below, while her left hand grips a spear of celestial gold that hums with restrained power, its tip catching the last rays of day. The air around her thickens with the dust of an epic fantasy battlefield, floating embers dancing alongside holographic golden runes of justice and fairness that swirl like a protective aegis, each glyph rotating with geometric precision against the smoke-choked sky. Dramatic high-contrast HDR shadows carve across her perfect anatomy while brilliant golden-hour glows ignite the metallic sheen of her armor and the microscopic cracks in the Parthenon's columns behind her, the interplay of light and shadow rendering every texture in 8k UHD matte-painting clarity. Shot on Sony A1, the wide cinematic composition captures her from a low angle that emphasizes her monumental presence against the burning heavens, the frame encompassing the full sweep of the ancient temple roof and the distant sprawl of Athens ablaze with the fires of war, professional photography raw photo aesthetic elevating the mythic tableau into tangible, breathing reality

Example Picture:

The Prompt Used:

A confident young adult woman with sharp facial features, piercing eyes, and dark hair pulled back in a severe style leans intently over a tattoo workstation, her posture taut with professional focus. She wears intricate black lace lingerie structured with heavy leather harnesses, polished chrome studs, and buckled straps that frame her torso, the delicate fabric contrasting against bold architectural hardware. Her skin displays a masterpiece of hyper-saturated tattoos — traditional Japanese irezumi dragons and koi intertwine with surrealist neon geometric patterns across her arms, back, and visible legs, the inks glowing with almost three-dimensional vibrancy. The studio surrounds her in curated chaos: a vintage leather barber chair anchors the space, while her workstation holds gleaming steel rotary machines, rows of translucent ink bottles catching colored light, and scattered charcoal flash sketches. Walls plastered with vintage flash art and ornate gothic calligraphy fade into a smoky dim perimeter above a gritty concrete floor. Electric pink, deep purple, and cobalt blue neon signs carve sharp highlights and velvet shadows through atmospheric haze, outlining her silhouette in a moody alchemy of color. Wide-angle cinematic composition captures the full environmental context with her figure dominant in the foreground, low perspective emphasizing the towering presence of her craft. Neon noir aesthetic merges punk subculture rawness with futuristic polished allure, hyper-detailed textures rendering every lace thread, ink gloss, and concrete pore. Shot on Sony A1

Example Picture:

The Prompt Used:

A regal Japanese woman with porcelain skin and delicate East Asian features gazes directly at the viewer with calm confidence, her expression serene and powerful, winged eyeliner sharp and precise, smoky reddish eyeshadow blending into a soft blush, lips painted a rich matte red. She wears an elaborate crystalline tiara of silver platinum studded with glittering red gemstones, an opulent scarlet satin gown with a high ruffled collar and voluminous puffed sleeves adorned with sparkling silver snowflake embellishments, long dangling chandelier earrings and a matching high-necked necklace of silver and gemstones, a silver ring on her right hand which gently rests against a massive iron-rusted dragon beside her. The dragon bears deep rugged armor-like scales in oxidized metallic tones, sharp formidable horns and spines cresting its head, one visible eye glowing with fiery orange-yellow light and a slitted reptilian pupil conveying ancient wisdom, its massive head leaning affectionately into her touch in a posture of calm guardianship. A snowy mystical forest surrounds them with white snow covering the ground and dark indistinct tree shapes fading into a softly blurred background creating shallow depth of field. Cool blue-toned twilight light bathes the scene in an overcast winter palette, contrasting with the vibrant scarlet of her gown and the deep green undertones of the dragon's hide and the fiery glow of its eye. Shot on Sony A1. Cinematic composition with centered symmetry and intimate proximity. Hyperrealistic fantasy portraiture with stylized royal elegance. Ultra-detailed skin texture and scale rendering natural lighting raw photo