Every template has a small settings panel for the canvas itself — independent of layers. Open it from the editor toolbar (⚙️ icon) or from the template listing via More → Settings.
Canvas size
The width and height of your working area, in pixels. This determines:
- How much room you have for layers.
- The print-ready file dimensions (Customei exports at 1:1 by default).
- The aspect ratio of the storefront preview image.
How to pick a size. Work backwards from the physical print area and your printer’s DPI:
canvas px = physical inches × DPI
| Product | Print area | Canvas size |
|---|
| 11 oz mug wrap | 8” × 3.33” | 2400 × 1000 |
| T-shirt front | 12” × 15” | 3600 × 4500 |
| Phone case | 3” × 6” | 900 × 1800 |
| Greeting card 5×7 | 5” × 7” | 1500 × 2100 |
Always design at the final print size, not smaller. Scaling up later creates soft, pixelated output.
Units
By default, the editor shows dimensions in pixels. You can switch the ruler and property panel to inches or millimeters — handy if you’re translating from a print spec sheet. Switching units doesn’t change the canvas; it just changes the display.
DPI (dots per inch)
DPI is stored as metadata on the template and used by the print-export service when it generates the final file. Changing it doesn’t reshape the canvas — it just tells Customei how many inches your canvas represents.
- 300 DPI is the safe default for most printers.
- 150 DPI is acceptable for large-format signs viewed from a distance.
- Below 150 DPI, expect visible pixelation on close-up prints.
Bleed (optional)
Bleed is extra area outside the trim line that your printer uses to avoid white edges after cutting. Customei lets you define a bleed margin (typically 1/8” or ~3mm) that’s visible in the editor as a guide line but clipped on final output if your printer expects trimmed files.
Use bleed when your printer’s spec sheet asks for it. Otherwise you can leave it at 0.
Background
You can set a canvas background for the editor surface — helpful for designing light-on-dark or previewing against a product color. The background is a display aid in the editor; it doesn’t render on the final print unless you explicitly add it as a layer.
Changing the canvas size later
Yes — you can. When you change the canvas size on an existing template:
- Larger canvas: existing layers stay at their current coordinates. You get more room; the old layout now sits in the top-left corner.
- Smaller canvas: existing layers keep their coordinates. Anything that falls outside the new bounds is still there but clipped.
Neither case reshuffles your layers. If you want the layout to scale with the canvas, do it manually (select all, resize together).
Next
