Big ideas.
The right resolution.
Print width in inches = image width in pixels ÷ target pixels per inch (PPI). A 3,600-pixel image is 12 inches wide at 300 PPI.
WRITTEN BY THE INKROOM STUDIO · NOVEMBER 10, 2026
PPI is not the same as printer DPI
PPI describes image pixels per printed inch. DPI refers to the printer’s dots per inch. “300 DPI PNG” is common search language, but changing a file’s resolution metadata to 300 does not create new pixels or reveal missing detail.
A quick size reference
| Canvas width | At 300 PPI | At 200 PPI | At 150 PPI |
|---|---|---|---|
| 1,500 px | 5.00 in | 7.50 in | 10.00 in |
| 2,000 px | 6.67 in | 10.00 in | 13.33 in |
| 3,000 px | 10.00 in | 15.00 in | 20.00 in |
| 3,600 px | 12.00 in | 18.00 in | 24.00 in |
| 4,500 px | 15.00 in | 22.50 in | 30.00 in |
Transparent margins count, too
A 2,000 × 2,000 pixel PNG may contain substantial empty transparent margins. The full canvas measures 6.67 × 6.67 inches at 300 PPI, but the visible graphic occupies less space. Inspect the actual artwork at final placement size.
What to check before printing
- Confirm the actual pixel dimensions, not only a “300 DPI” label.
- Inspect on light and dark backgrounds for colored fringes and unwanted pixels.
- Check small lettering and any partially transparent glow or shadow.
- Ask the print provider about white underbase, minimum line widths, color profile, and blank material.
- Make a test print before committing to a production run.
DTF and sublimation need different checks
DTF commonly uses white ink and transfer film. Sublimation depends on compatible materials, such as appropriate polyester or polymer-coated blanks. A transparent PNG does not automatically meet either workflow’s requirements.
Sources and further reading
Printer specifications change. Always follow the current file guidelines for your exact product and provider.
Try the print size calculator ↗