Krea Reference lets each source image have a clear job. Use one image
for subject, another for style, another for lighting, another for
material, and another to keep text or logos from being copied.
Start with one guide card per image. Choose Use image for,
set How strongly this image guides, and let the V9 stack
combine all connected cards with your written prompt.
Load ImageYour source or reference image
Guide Card V9Pick the image's job
Reference Stack V9Combine prompt and cards
KSampler PositiveGenerate with Krea
Try the demo images: the individual PNG files in
docs/assets/krea-v9/demos/ contain ComfyUI workflow metadata.
Drag one of those PNGs into ComfyUI to load the matching demo workflow.
Synthetic reference images included with this repo.ComfyUI-generated V9 demo outputs. Each individual demo PNG has an embedded workflow.
The Mental Model
1. The prompt says what to make
Use the prompt for the final image idea: product, scene, material, camera, and constraints.
2. Cards say what to borrow
Every image card should have one primary job. This is easier to control than one large image prompt.
3. Strength says how loudly it speaks
Start low. Raise only the card that is too subtle. Strong references can overpower the prompt.
4. Timing controls when images guide
Smart timing lets structure guide early while style and material can influence the final finish.
Use Image For Recipes
Use image for is the main creative control on the guide card.
The quick recipes fill in the lower-level manual controls for you. Use
manual tuning when you want those lower controls to count.
Source imageOutput. The vase keeps the prompt subject while borrowing teal brush energy.
Manual mode is for deliberate control. In this demo the card borrows
colors and art style through a palette wash
with Shape copied kept alive at 0.8 - the
wash provides the structure safety, so the live shape pull carries
palette and finish only. On Krea 2 Overall style reach
has no effect (no pooled channel); never rely on it to carry a look.
Recipe: keep the same subjectStrength: 0.80Reference: content anchor
Source imageOutput. The cone-lamp identity is preserved while the prompt changes the product finish.
Use this when the product, character, outfit, person, or object must
remain recognizable. This recipe is the one place where high strength
values such as 0.70 to 0.85 often make sense.
Recipe: copy pose and layoutStrength: 0.38Reference: diagonal layout
Source imageOutput. The objects follow the diagonal shelf arrangement.
This recipe borrows structure: pose, camera, crop, spacing, and broad
placement. It suppresses subject copying, color copying, and exact
texture so the prompt can decide what appears in that layout.
Recipe: suggest the visual styleStrength: 0.50Reference: abstract palette
Source imageOutput. The prompt subject survives while teal, coral, and graphite styling appears.
This is the main style-transfer recipe. It borrows palette, finish,
medium, and atmosphere while avoiding the style image's subject. The
demo runs at 0.50, where the borrowed palette lands
cleanly on a crisp subject; pushing toward 0.65
transfers even harder but can start softening the subject's
surfaces.
Recipe: suggest material or textureStrength: 0.36Reference: woven material
Source imageOutput. The lamp surface borrows woven texture without copying every mark.
Use this for material feel: woven ceramic, stone, paper grain, fabric,
brushed metal, painted finish, and similar surfaces. If the exact
pattern copies too strongly, lower strength or use manual tuning with
lower Small details kept.
Recipe: avoid copying text/logosStrength: 0.03Stack: full guard
Source imageOutput. The sign shape remains, but the interior is blank and unmarked.
Use this for signs, logos, UI, labels, screenshots, labels on packaging,
letter-like marks, or any source image that contains words. Keep
strength very low. The recipe caps effective image pull to protect the
output from copied text.
Manual controls count only when Use image for is
manual tuning. In quick recipe mode, the recipe supplies
tested values for these lower controls.
Control
Use It For
Manual mode borrows
Choose the ingredient: style, palette, layout, framing, identity, environment, lighting, mood, material, shape, or text/logo safety.
Prepare image by
Simplify the source before Krea studies it: grayscale, blur, palette wash, color wash, shape cleanup, or original image.
Color kept
Lower it when you want shape or layout without palette influence.
Small details kept
Lower it to avoid exact grain, letters, tiny marks, and over-copying.
Study this image at
Override the global image detail level for this one card.
Frame this reference by
Override the global framing mode for this one card.
Subject copying
Tell the stack whether the source subject should be avoided, allowed, or preserved.
Early layout guidance
Controls how much the card helps early composition when timing is smart or two-phase.
Final detail copying
Controls how much late detail can come through near the end.
Maximum image pull
Caps a manual card even if the main strength is high.
Shape copied
Spatial or subject-structure pull. Lower it for pure style, palette, lighting, or material.
Overall style reach
Global tone, palette, finish, and atmosphere pull. Raise it when manual style is too subtle.
Reference Stack Encoder
The stack encoder receives your Krea CLIP, your final prompt, and up to
12 guide cards. It turns them into the positive conditioning that goes
into KSampler.
Written Prompt Strength
Use 1.0 as normal. Raise it when the prompt should win over references. Use 0.0 for blank-prompt image mixing.
Image Slider Feel
artist friendly is the best default. extra gentle helps when references dominate at low values.
Image Detail Level
Low is safer and looser. High studies more detail, which can help exact style but can also over-copy.
Image Framing
Keep full image shape unless a reference should be center-cropped or stretched to square before study.
When Images Guide
smart per-card timing lets each card use its resolved early and late behavior. This is the default.
Text/Logo Guard Handling
full guard rewrites marking words into blank-surface language. gentle guard keeps your prompt words and appends protection.
Starting Strengths
Strength
What It Usually Means
Good Uses
0.00
Off.
Keep a card connected but inactive.
0.03 to 0.08
Tiny nudge.
Text/logo guard, shape hints, stubborn prompts.
0.10 to 0.25
Gentle guidance.
Layout, material, mood-board influence.
0.25 to 0.45
Strong guidance.
Lighting, texture, pose, broad style.
0.50 to 0.90
Very strong.
Content anchor or deliberate style transfer. Watch for over-copying.
Multi-Reference Workflows
A good multi-reference setup gives every source image a separate job.
Do not ask every image to do everything.
Product Variation
keep the same subject for the product, suggest the visual style for art direction, and copy lighting and mood for the lighting reference.
Style Onto Content
Image 1: content anchor. Image 2: visual style. Leave the prompt blank for pure image-to-image style mixing, or add a short prompt for a guided result.
Packaging Or UI Safety
Use a normal product or layout card, then add a text/logo guard card for labels, signs, screens, or logo-shaped panels.
Reference 1: keep the same subject, strength 0.80
Reference 2: suggest the visual style, strength 0.45 to 0.65
Reference 3: copy lighting and mood, strength 0.30 to 0.45
Reference 4: avoid copying text/logos, strength 0.03
Embedded Demo Workflows
Every individual recipe PNG below was saved by ComfyUI with workflow
metadata in the PNG. Drag the PNG file into ComfyUI to load the demo.
The companion workflow JSON is included for users who prefer opening a
workflow file directly.
If a loaded demo reports missing images, copy
example_assets/krea-reference-examples/ into your ComfyUI
input/ folder so paths such as
krea-reference-examples/slot1_content_anchor.png resolve.
Troubleshooting
Problem
What To Try
The reference is too bossy.
Lower card strength, switch Image slider feel to extra gentle, or raise Written prompt strength.
The prompt is ignored.
Raise Written prompt strength, reduce the strongest card, or use more specific prompt language.
Style changes the subject.
Lower style strength, use suggest the visual style, or in manual mode lower Shape copied.
Material copies too literally.
Lower strength, lower Small details kept, or use suggest material or texture.
Text or logos appear.
Use avoid copying text/logos, strength around 0.03, low detail, and blank-surface prompt wording.
Layout gets too tight.
Lower the layout card, use smart per-card timing, or reduce Final detail copying in manual mode.