How to Make Posters and Product Mockups in Seedream 5.0
Seedream 5.0 renders layout, text, and product form together, which makes it unusually good at packaging mockups and posters. You can hand it a paragraph describing placement and get back something close to a design draft in one pass.
This workflow is for designers and marketers who need visual concepts fast, not final artwork. Seedream 5.0 outputs raster images — you still rebuild the winner in real design software.
How Do You Write a Layout Brief Instead of a Prompt?
Treat the prompt as art direction. Name the elements and where they sit, top to bottom. A poster brief reads like this:
- Background: deep teal gradient, subtle paper texture
- Top third: headline text “NIGHT MARKET” in bold condensed white capitals
- Middle: photo of a steaming noodle stall, warm light
- Bottom third: small text “SAT 8PM” and a thin white rule
- Overall: poster, portrait ratio, high contrast
Seedream follows this far more reliably than a paragraph of adjectives, because each line maps to a region of the canvas.
How Do You Get the Text Right?
Quote every string exactly, and cap the whole image at roughly four short strings. Beyond that, letters start blending between elements. Specify the type style — “bold condensed capitals” — because Seedream picks a font look from your adjective, and vague descriptions give vague typography.
If one word is misspelled, change nothing else and rerun. Changing two variables at once makes it impossible to tell what caused the fix.
What About Product and Packaging Mockups?
Packaging benefits from an image reference. Upload a photo of the actual product, then describe the context: “this bottle on a marble counter, soft studio light, label text reads ‘AROMA’.” The reference locks the shape and material; the prompt controls scene and text.
| Use case | Reference? | Text |
|---|---|---|
| Poster concept | No | Up to 4 strings |
| Packaging mockup | Yes, product photo | 1-2 strings on label |
| UI screen mockup | Optional | Short labels only |
| Billboard in scene | No | 2-3 large words |
Which Resolution Should You Pick?
Draft at 1K or 2K and only rerender the winner at 4K. The API bills more per 4K image, and most layout problems are visible at low resolution anyway. Poster drafts need portrait ratios; on-screen mockups need landscape. Set the ratio before prompting, because changing it later reflows The whole composition and can break carefully placed text.
What Are the Real Limits?
Consistency across a campaign is the weak point. Generate five packaging variants and the label typography will differ between them. Keep one reference image and one prompt skeleton, and change only the variable you need — flavor, color, tagline. Even then, expect to fix type in post.
Fine print is a lost cause. Anything under about 5% of the image width will be mush, so design legal lines and barcodes in your layout tool, not in Seedream.
Quick Summary
- Write layout briefs, not adjectives — one line per element and position.
- Quote text exactly and keep it to about four short strings.
- Use a product photo reference to lock shape and material.
- Draft at 1K-2K, rerender the winner at 4K.
- Fine print stays unreadable — add it in post.
