Prompt to SVG
What to write, and how the five styles change what comes back.
The one rule
Ask for flat colour on a plain background. It is the single biggest lever on output quality. Clean in, clean out.
a fox mascot head, flat colours, plain light grey backgroundEverything else in this page is a refinement of that.
Writing the prompt
Write it the way you would brief a designer, not the way you would write a search query.
| Do | Don't |
|---|---|
| Name the subject and the shape of it | Write "logo" and nothing else |
| Say how many colours, if you care | Assume the model will guess |
| Say "flat colours" if you want a clean trace | Ask for soft gradients, then wonder why it banded |
| Name the background, or say none | Leave it to chance |
Length: 3 to 2000 characters. Under 3 is rejected before it is charged.
The five styles
style is the only place your prompt gets words added to it, and only because
you asked for that style.
| Style | Adds to your prompt | Use it for |
|---|---|---|
auto | nothing | Default. Good when you do not know yet |
flat | flat colours, no gradients, clean shapes | Logos, icons, anything you intend to trace hard |
icon | a single centred mark, heavy shapes | App icons, favicons, UI glyphs |
logo | a mark with space around it, few colours | Brand marks, wordmark companions |
illustration | more detail allowed | Posters, editorial, character art |
flat traces to a fraction of the paths of illustration. If file size
matters, start there.
Quality
quality | Cost | When |
|---|---|---|
standard | $0.03 | Default. Right for almost everything |
hd | $0.08 square, $0.10 wide | Fine detail, or a source you will print large |
Shape
aspect sets the canvas. It does not crop your subject.
| Value | Pixels |
|---|---|
1:1 | 1024 x 1024 |
3:2 | 1536 x 1024 |
2:3 | 1024 x 1536 |
16:9 | 1824 x 1024 |
9:16 | 1024 x 1824 |
Wide and tall canvases cost more to generate, because the image model charges by pixel area. A 16:9 frame is 1.78x a square one. This is the only option that changes the price without asking for it.
Background
background: "transparent" is the default for generation, and it is what you
want almost every time. "keep" leaves whatever the model drew.
Transparency is applied by cutting the flat background out, not by keying a colour. That is why a light grey backdrop works better than a busy one: there is a single clean edge to find.
Try it without a key
The SVG generator page runs the same engine. Generation asks you to sign in; vectorizing is free to try.