Diagram Maker
Type your steps, pick a shape, and get a clean diagram with thick-ink, on-brand styling — labels rendered deterministically, without AI rewrites. Compact geometries shorten long labels to fit.
The Gixo Prism Diagram Maker turns a numbered list of steps into a finished diagram in one render, with no sign-up and no AI model in the loop. Pick one of 11 shapes — process, cycle, pyramid, funnel, tree, pillars, 2×2 matrix, Venn, concentric rings, or layered stack, or an explicit node graph — type or paste your labels, and the layout, spacing, arrows, and colours are computed by deterministic code, so the same input always produces the same diagram and your labels are never invented or paraphrased. To fit compact geometry, Venn and concentric labels are shortened at 16 and 18 characters; graph node labels, details, and connection labels are shortened at 19–30 characters depending on the field and whether an asset icon is present. One render accepts up to 200 steps and picks from 4 theme presets or your Brand Kit palette. Rendering and previewing are free and anonymous; copying clean HTML, embedding, and downloading HTML, SVG, PNG, PDF, and PPTX files require an active Prism trial or plan.
What a diagram tool has to do
A diagram tool has one job: take a structure you are already holding in your head — an order, a hierarchy, an overlap, a ranking — and draw it so someone else sees it in a second. Three things separate the ones worth opening.
- The geometry has to follow the meaning. Steps that come back round are a cycle, not a left-to-right process. A ranking is a pyramid or a funnel depending on which end is wide. A blank canvas leaves that decision to you; the table below maps each of the 11 shapes to the meaning it carries, so the choice is made before you start typing.
- It has to draw what you typed. A tool that quietly rewrites a label to make it fit has moved the problem rather than solved it. Here the labels are rendered as entered; the only shortening is where a geometry physically cannot hold the text — Venn set labels past 16 characters, ring labels past 18, compact graph text between 19 and 30 — and every one of those limits is stated in the table rather than applied out of sight.
- You have to be able to take the file. A diagram that only exists inside the tool becomes a screenshot in someone's deck. Clean HTML, an embed snippet and downloadable files are the point of the exercise; on this page they sit behind a Prism trial or plan, and the preview is free and anonymous until then.
What it is not, said plainly so you do not find out after typing a list: this draws business structure, not schemas or infrastructure. There is no entity-relationship diagram here — no tables, keys or cardinality — and no network topology, no routers, subnets or racks. The graph shape draws labelled nodes and typed relationships between them, which is a different thing from either. Decision flows and swimlanes are also elsewhere: those live in the flowchart maker.
Which diagram shape should you use?
Every shape takes the same input — an ordered list of labels, each with an optional one-line detail. Some shapes read an extra field, and three of them cap how many items they draw.
| Shape | What it renders | Extra input it reads | Items drawn |
|---|---|---|---|
| Process / steps | Left-to-right sequence with arrows between stages | None | All steps, up to 200 |
| Cycle / loop | Closed loop that returns to the first stage | None | All steps, up to 200 |
| Pyramid | Stacked bands narrowing toward the top; first item is the apex | None | All steps, up to 200 |
| Funnel | Stacked bands narrowing toward the bottom; first item is the widest | None | All steps, up to 200 |
| Tree / hierarchy | Parent-child hierarchy drawn from an indent level per row | Level, 0–4 | All steps, up to 200 |
| Pillars | Equal-width columns side by side | None | All steps, up to 200 |
| Matrix (2×2) | Four labelled quadrants with axis titles | Quadrant per row, plus X and Y axis labels | 4 — one per quadrant; extra rows are not drawn |
| Venn (overlap) | Overlapping sets with a shared centre; set labels are shortened past 16 characters to fit the circles | None | First 3 items; any others are named in a note under the diagram |
| Concentric rings | Nested rings from a core outward; ring labels are shortened past 18 characters | None | First 4 items |
| Layered stack | Equal-width horizontal bands, top to bottom | None | All steps, up to 200 |
| Graph | Directed nodes with branching, merging, cross-links, cycles, typed business relationships, confidence, criticality, and accessible relationship summaries; compact node and edge text is shortened at 19–30 characters | A stable key per node plus explicit from/to connections | Up to 80 labelled nodes and 160 connections |
How to make a diagram, step by step
- Pick a shape. Choose one of the 11 geometries above, or load one of the 3 starter templates (portfolio matrix, value chain, capability pyramid) to see the input shape.
- Enter your labels. Type them into the numbered rows, or open Paste a list and paste one item per line, using
Label | Detailto split a heading from its one-line detail. - Fill in the shape-specific field. A 2×2 matrix needs a quadrant per row plus the two axis titles; a tree needs a level from 0 to 4 per row; a graph needs unique node keys and explicit connections. Every other shape needs nothing extra.
- Choose a theme. 4 presets ship with the tool — Conservative, Bold, Brand conservative (the default), and Brand bold — and a saved Brand Kit replaces the palette with your own colours.
- Render it. Press Make diagram. The render runs in-process with no AI call, so it returns immediately and your labels appear exactly as typed.
- Take the file. Download an HTML or SVG copy free, with a visible Gixo Prism credit. A trial or plan removes the credit and adds HTML, SVG, PNG, PDF, and PPTX.
Diagram maker FAQ
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