PPI = pixels per inch (your image).
DPI = dots per inch (the printer device).
For file prep, focus on PPI—that’s your pixel count divided by print inches. Use the Print Size Calculator or 300 DPI cheat-sheet to convert quickly.
What PPI do I need?
- 300 PPI for close viewing (magazine, photo prints).
- 150–200 PPI for wall posters and A-series seen from a distance. Check max sizes with Max Print Size (by MP).
How to hit the number
- Decide your paper size (e.g., A2).
- Multiply inches by target PPI → required pixels (calculator helps).
- If you’re short, upscale with PrintUpscale then export the exact size.
Common myths
Myth: “I must set 300 DPI in metadata.”
Reality: Export enough pixels; the metadata flag alone won’t invent detail.