LUMENKILN STUDIO

The Free AI Prompt Toolkit

22 free, no-signup prompt generators. Pick from menus, copy a director-grade prompt, and paste it into Midjourney, ChatGPT, Claude, FLUX or Nano Banana. Nothing to install, nothing you pick ever leaves the tab.

22 free tools  ·  $0  ·  no signup, no email
Every tool here is genuinely free and complete on its own. The menus hold the same expert choices a pro would make (shot, style, lighting, tone, framework), so a beginner gets a professional prompt on the first try.
★ Rate My Prompt — score any prompt 0-100
Paste any AI image prompt, get an instant score plus the exact fixes. No signup.
Score my prompt →
★ AI Art Aesthetic Quiz — what's your style?
Answer a few taps, get your AI art aesthetic plus a free starter prompt to match. No signup.
Take the quiz →

Image prompt builders

For Midjourney, FLUX, Nano Banana, DALL-E and Stable Diffusion.
Cinematic image
Director-grade shots from shot, lens, lighting and film-stock menus.
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Product photo
Clean studio and lifestyle product shots for your store.
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Professional headshot
LinkedIn-ready headshots from your own photo.
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Interior design
Redesign a room by style, palette and lighting.
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Virtual staging
Furnish or declutter a real estate photo.
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Logo
Brand logos by style, industry and color.
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T-shirt design
Print-ready POD graphics for Etsy and Merch.
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Tattoo design
Stencil-ready designs by style, shading and placement.
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Book cover
KDP-ready covers with space for your title.
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Avatar and PFP
LinkedIn, anime, 3D or cyberpunk, keeping your face.
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Sticker design
Die-cut, kawaii and holographic print-ready stickers.
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Pet portrait
Turn your pet photo into royal or cartoon art.
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Coloring page
Clean line-art pages for KDP coloring books.
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Wedding photo
Gallery-quality wedding moments and portraits.
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Comic and manga art
Panels and characters by style, shot and shading.
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Fantasy map
World, region and dungeon maps for D&D and books.
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Writing prompt builders

For ChatGPT, Claude, Gemini and any AI chat tool.
Marketing copy
Persuasive copy for any product or offer.
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Instagram caption
3 captions with a scroll-stopping hook and CTA.
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YouTube script
Hook-first scripts built to hold watch time.
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LinkedIn post
Scroll-stopping posts that build authority.
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Product description
Descriptions that sell for Shopify, Etsy and Amazon.
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Ad copy
High-converting ad copy with A/B variations.
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Prompt libraries by AI model

Copy-paste prompts tuned for each tool, plus buyer's guides.
AI action figure
The viral boxed-toy and figurine trend.
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Nano Banana
Photo edits and character consistency.
Open →
Sora 2 video
Cinematic AI video prompts.
Open →
Veo 3 video
AI video with native audio and dialogue.
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Stable Diffusion
SDXL prompts plus negative prompts.
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ChatGPT image
GPT-4o text-in-image and edits.
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Anime AI art
Anime and manga styles, character sheets.
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Ghibli style
Cozy hand-painted anime aesthetic.
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Gemini image
Google Gemini app image prompts.
Open →
Leonardo AI
Game assets and concept art.
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AI influencer
Consistent virtual model and character.
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Seamless patterns
Tileable patterns for print on demand.
Open →
Best AI image generator
Midjourney vs FLUX vs Nano Banana guide.
Compare →
Sora 2 vs Veo 3
Which AI video tool wins in 2026.
Compare →

Compare AI models

Honest side-by-side breakdowns to pick the right tool.
Midjourney vs FLUX
Art quality vs realism and text.
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DALL-E vs Midjourney
Ease vs artistic quality.
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Midjourney vs Stable Diffusion
Polish vs total control.
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Midjourney vs Nano Banana
Original art vs photo editing.
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FLUX vs Stable Diffusion
Realism vs control.
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Ideogram vs Midjourney
Text in images vs art.
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Leonardo vs Midjourney
Game assets vs peak art.
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Nano Banana vs Photoshop
AI editing vs pro control.
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Gemini vs ChatGPT
The assistant showdown.
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ChatGPT vs Claude
Coding and writing.
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Kling vs Sora 2
AI video head to head.
Compare →
Runway vs Sora 2
Pro toolkit vs realism.
Compare →
Best free AI generators
The truly-free options ranked.
See list →

Guides and references

Learn to prompt like a pro.
How to write AI image prompts
The complete beginner-to-pro guide.
Read →
How to write AI video prompts
Sora, Veo, Kling and Runway.
Read →
10 common prompt mistakes
And exactly how to fix them.
Read →
★ AI prompt cheat sheet
The 9 ingredients + modifiers on one page. Save it.
Open →
Lighting cheat sheet
Every lighting term, what each does.
Open →
Camera and lens cheat sheet
Lenses, aperture, the pro look.
Open →
Camera angles cheat sheet
Every shot type and angle.
Open →
Film stock and color cheat sheet
Cinematic film stocks and grades.
Open →
Composition cheat sheet
Rule of thirds, leading lines, depth.
Open →
Mood and color cheat sheet
Mood words paired with palettes.
Open →
Portrait cheat sheet
Headshot lighting and framing.
Open →
Product photography cheat sheet
Clean ecommerce shot setups.
Open →
Character consistency cheat sheet
Keep the same face every time.
Open →
Video camera moves cheat sheet
Moves for Sora, Veo and Kling.
Open →
Negative prompt cheat sheet
Fix hands, blur, watermarks in SD.
Open →
Anime style cheat sheet
Anime and manga looks, one page.
Open →
AI image prompt glossary
40+ terms that improve prompts.
Read →
Midjourney parameters guide
Every --ar --v --stylize explained.
Read →
AI art styles list
90+ style modifiers to copy.
Browse →
Negative prompt generator
Fix bad hands and artifacts.
Open →
AI aspect ratio cheat sheet
Right size and syntax per model.
Open →

Want the deep libraries, not one prompt at a time?

The free tools build one prompt at a time. The paid packs give you hundreds of tested, categorized prompts with a one-click Copy-Deck, yours forever. Or grab everything in the Vault.

Get the Vault ($69) Grab the free 5-pack