Patch It Up Pro
DTF PNG File Specifications: DPI, Transparency, Color, and Size
Short answer: For DTF production, export PNG artwork at the exact print size with a transparent background and enough pixels for roughly 300 PPI at final dimensions. Use RGB unless your RIP requires a different workflow, remove semi-transparent background artifacts, and inspect the alpha edge at 100% before building the gang sheet.
Quick specifications
- Format
- PNG with alpha transparency
- Resolution target
- About 300 pixels per inch at final print size
- Color
- RGB unless the receiving RIP specifies otherwise
- Background
- Transparent, with no hidden matte or halo
- Scale
- Exact final dimensions
- Compression
- Lossless PNG
Pixel dimensions at 300 PPI
Pixel dimensions at 300 PPI| Final print size | Pixel width | Pixel height |
|---|
| 3 × 3 in | 900 px | 900 px |
| 4 × 5 in | 1,200 px | 1,500 px |
| 10 × 12 in | 3,000 px | 3,600 px |
| 11 × 14 in | 3,300 px | 4,200 px |
| 22 × 36 in gang sheet | 6,600 px | 10,800 px |
Production recommendations
- Judge resolution at final size: A file can show 300 DPI metadata and still be too small. Pixel dimensions divided by final inches determine effective PPI.
- Inspect transparency: Zoom into the edge over both black and white backgrounds to find halos, stray pixels, and accidental transparency.
- Let the RIP handle white: Most DTF workflows generate a white underbase in the RIP. Do not flatten artwork onto white unless the printer specifically requests it.
Frequently asked questions
- Does a DTF PNG have to be 300 DPI?
- Treat 300 PPI at final size as a strong target, not magic metadata. Some art prints acceptably lower and fine detail may benefit from more, but the receiving printer should set the final rule.
- Should DTF PNG be RGB or CMYK?
- Most DTF shops accept RGB PNG because the RIP converts color for the printer and ink set. Ask the receiving shop for its preferred profile and export instructions.
- Why is there a white box around my transfer?
- The background was flattened or is not truly transparent. Check the alpha channel and remove the background before generating the white underbase.