Works with Midjourney • Stable Diffusion • Flux • ComfyUI • Any Output

Stop doing one swap at a time.
Get every combination.

Take the face from image 1, the outfit from image 3, the boots from image 7 — automatically, in every possible combination.

You generated 10 great AI images. Each one is 90% perfect. The face in image 3 is exactly right, but the outfit in image 7 is better, and the accessories in image 9 are what you actually need. In Photoshop, combining those means lasso, paste, mask, blend — for ONE combination. You need 50. Compix draws freeform shapes on each region, then generates EVERY possible combination. 10 images × 3 shapes = 620+ unique variants. In seconds.

Try It Now — Free → See How It Works
Every combination, not just one Pixel-perfect, full resolution No AI, no GPU, no credits
The problem every AI artist knows

Your perfect character is split across 10 images.

You generated a batch. Some images nailed the face but the outfit is wrong. Others have the perfect outfit but the expression drifted. Others got the accessories right but nothing else. The perfect image doesn't exist in your batch — but every PART of it does.

What you do today

Open Photoshop. Lasso the face from image 3. Paste it onto image 7. Mask the edges. Adjust the blend. That's ONE combination. It took 10 minutes. You need 50 more. Each one is manual. Each one takes time. The math works against you — with 10 images and 3 regions, there are 620+ possible combinations. Nobody is doing that by hand.

What face swap tools do

One face onto one body. One swap at a time. Upload image A, upload image B, get result C. Better than Photoshop, but still manual. Still one-at-a-time. And most face swap tools use AI to blend, which introduces hallucination — the result isn't your exact pixels, it's an AI approximation.

What Compix does instead

Upload all 10 images. Draw a freeform shape around the head. Draw another around the outfit. Draw another around the accessories. Hit Generate. The combinatorial engine computes EVERY possible combination — 620+ unique variants. Each one is pixel-perfect. No AI model runs. No blending, no hallucination. Your exact pixels, reassembled in every mathematical combination.

How combining works

Draw shapes. Get every combination.

No masking. No layers. No Photoshop. Draw the regions, the math does the rest.

1

Upload your AI images

Drop all your character variants — Midjourney outputs, Stable Diffusion batch, ComfyUI renders. Any AI-generated images that share roughly the same framing. One becomes your anchor (the base character), the rest become your source pool.

2

Draw shapes around swappable regions

Click the shape tool. Draw a freeform shape around the head — that's your first swappable region. Draw another around the outfit. Another around the accessories, the weapon, the background, the hair — any region you want to mix. Each shape defines one axis of variation.

3

Hit Generate — get every combination

The combinatorial engine takes over. For every shape, it has N source options (one from each image). It computes every possible assignment: face from image 1 + outfit from image 4 + accessories from image 9. Then face from image 1 + outfit from image 5 + accessories from image 2. Every permutation. 9 images × 3 shapes = 620+ unique results.

4

Browse, select, export

Scroll through your combination grid. Every image is full resolution, pixel-perfect. No AI hallucination — these are your exact original pixels, reassembled. Find the combinations that work. Export individually or batch-download as a ZIP. Your perfect character was in there all along.

Compix combinatorial mixing — 9 AI character images loaded, freeform shapes drawn on head and outfit regions, generating every possible combination
The combinatorial math

More images × more shapes = exponentially more combinations.

This isn't approximate. This is the exact math the engine computes.

72
9 images × 1 shape
Just the head region
620+
9 images × 3 shapes
Head + outfit + accessories
10,000
10 images × 4 shapes
Full character breakdown
100k+
10 images × 5 shapes
Every micro-region

Each face swap tool would need 620 separate operations to produce what Compix generates in one click. And face swaps use AI — introducing hallucination and drift. Compix uses your exact pixels.

Important distinction

This is not AI blending.
This is combinatorial reassembly.

When you hear "combine AI images," most tools think you mean "blend two images together using a neural network." That produces a new, AI-generated hybrid — unpredictable, hallucinated, consuming GPU and credits. Compix does something fundamentally different.

AI blending (Midjourney /blend, Fotor, etc.)

Feeds images into a neural network. The AI interprets both and generates a new hybrid. Result is unpredictable. Uses GPU and credits. The output pixels don't come from your original images — they're hallucinated by the model. Good for creative exploration, bad for precise character work.

Combinatorial reassembly (Compix)

Extracts exact pixel regions from your existing images using freeform shapes. Reassembles them in every mathematical combination. No neural network runs. The output pixels ARE your original pixels — deterministic, repeatable, exact. The face from image 3 is the actual face from image 3, placed pixel-perfectly onto image 7's body.

Built for these workflows

When you need the best parts from every image.

Character design

Generated 50 character variants in Midjourney. 10 are usable. The perfect character is scattered across all 10 — face from one, armor from another, pose from a third. Combine them all.

Game asset creation

Need 100 NPC variations for your game. Generate 10 base characters with different features. Compix combines them into hundreds of unique variations. Each one is a real, exportable asset.

Comic & storyboard consistency

Your character needs to look consistent across 30 panels. Generated the poses you need but the face keeps drifting. Extract the best face and combine it with every pose.

Fashion & outfit exploration

Same model, different outfits. Instead of regenerating with each outfit prompt, generate the outfits separately and combine them onto your base model. See every outfit combination at once.

FAQ

Common questions about combining AI images

They should be roughly the same resolution and framing for best results. Character images generated from similar prompts (same character, different variations) work perfectly. The tool pixel-locks all images to the same coordinate space, so aligned images produce seamless combinations.
Yes. Compix doesn't care which generator produced the images. Midjourney outputs, Stable Diffusion renders, Flux generations, ComfyUI workflows, Leonardo outputs — any image files work. You can even mix images from different generators in the same combination session.
In Photoshop, you manually lasso, copy, paste, mask, and blend — for each individual combination. With 10 images and 3 regions, there are 620+ combinations. That would take weeks in Photoshop. Compix does it in seconds. Draw 3 shapes, hit Generate, get all 620+ combinations at once. And because there's no AI blending, the results are pixel-exact.
Free. No account required. No upload to any server. Everything runs in your browser using the Canvas API. Your images never leave your device. There is no catch — Compix is a browser-based tool with zero server costs. It works offline once loaded.
Because their business model depends on you generating more images. Every re-roll, every variation, every regeneration costs credits — that's their revenue. A tool that creates 620+ variations from images you already generated, without any new generation, directly cannibalizes that revenue. They have no incentive to build it. Compix exists because no generation platform ever will.
The complete post-generation workflow

Combine is one step. Here's the full pipeline.

Create 620+ Variations

The detailed guide to freeform region extraction and the compound math behind the variation engine. See exactly how 9 images become 620+ combinations. Full variation guide →

Detect Drift First

Before combining, blink your batch to find which regions drifted and which are consistent. The diff heatmap shows you what's worth extracting. Drift detection guide →

7-Step Workflow

The complete post-generation pipeline: compare, detect drift, extract regions, combine, composite, animate, export. See the workflow →

Your perfect character already exists.

It's split across your batch. Compix puts it together — in every possible combination.

Open Compix — Free →