Utility Nodes
Glue between models: concatenate text, resize images, split text, and join arrays with PixelFlow's built-in utility nodes — no extra model calls, no cost.
Utility nodes transform data between models — the plumbing that makes multi-model workflows fit together. They run instantly and don't consume credits.
Available utilities
Text Concatenation
Joins incoming text values into one string. Use it to combine a fixed style prefix with a user prompt, or merge outputs from several LLM nodes into a single document.
Image Resize
Resizes an image before it reaches the next model — useful when a downstream model expects specific dimensions, or to cut upload time and cost for large source images.
Text Split
Splits one text into parts — for instance, breaking an LLM's list output into individual items for downstream processing.
Array Join
Joins an array of values back into one — the natural companion to Text Split or a fan-out region when you want a single combined result.
Chaining utilities
Utilities compose like any other node. A common pattern:
LLM (writes 3 prompt variants)
→ Text Split (one per line)
→ fan-out → image model (runs per variant)
→ collect → Array Join
→ OutputVideo coming soon
Text Split feeding a fanned-out model, collected with Array Join
https://segmind-resources.s3.amazonaws.com/docs/pixelflow/nodes/utility-chain.mp4
Renaming a utility node (click its title) keeps complex graphs readable — "Add style prefix" beats "Text Concatenation" on a 20-node canvas.
Output Nodes
Display workflow results with output nodes — automatic rendering for images, video, audio, text, and 3D — and name them to define your API's response fields.
Notes
Document workflows on the canvas with resizable, color-coded sticky notes. Notes never execute and are stripped from published APIs.