The most common print disappointment is a blurry image — a logo or photo that looked perfect on screen but came back soft, fuzzy or pixelated. The cause is almost always resolution: the image simply did not have enough pixels for the size it was printed at. The good news is resolution is predictable, so blur is preventable. This guide explains how. It is part of our complete print-prep guide.
Pixels, DPI and why screens lie
A digital image is a grid of pixels. DPI (dots per inch) describes how many of those pixels are packed into each printed inch. The same image at a higher DPI prints smaller and sharper; at a lower DPI it prints larger and softer.
Screens mislead because they display at roughly 72–96 DPI, so an image can look crisp on screen yet have nowhere near enough pixels to print sharp at size. "Looks fine on my monitor" is not the test — pixel count for the print size is.
The rule of thumb: 300 DPI up close, less from afar
How much resolution you need depends on how close people view the print:
- Held in the hand (cards, stickers, flyers) — aim for 300 DPI at final size.
- Posters viewed at a step or two — 150–300 DPI is plenty (see our premium poster).
- Large banners viewed from metres away — 100 DPI or even less is fine, because distance hides softness.
This is why a giant billboard can use a surprisingly low-resolution file: nobody stands close enough to see the pixels.
How to check before you print
- Find the pixel dimensions of your image (e.g. 3000 × 2000 px).
- Divide by your target DPI to get the printable size: 3000 px ÷ 300 = 10 inches at 300 DPI.
- If that size is smaller than you need, the image will be soft — find a higher-resolution version.
Never scale a small image up to fit; enlarging adds size but not detail, so it just blurs.
Where to get enough resolution
- Photos — use the original camera file, not a version downloaded from social media (which is heavily compressed and shrunk).
- Logos — use a vector file, which has no resolution limit at all (see logo files for printing).
- Stock images — buy the largest size offered if you will print large.
When unsure, send the file and ask the printer to confirm it is high enough resolution for your size before the run. See common print mistakes for the other pitfalls.
Frequently asked questions
What resolution do I need for print? It depends on viewing distance — about 300 DPI for things held in the hand, 150–300 DPI for posters, and 100 DPI or less for large banners viewed from metres away, where distance hides any softness.
Why does my image look fine on screen but print blurry? Screens display at ~72–96 DPI, so an image can look crisp on screen but lack the pixels to print sharp at size. Check the pixel count against the print size, not how it looks on your monitor.
Can I enlarge a small image for print? No — scaling up adds size but not detail, so it just blurs. Find a higher-resolution original instead, or use a vector file for logos.
How do I check if my image is high enough resolution? Divide its pixel width by your target DPI: 3000 px ÷ 300 = 10 inches at 300 DPI. If that's smaller than your print size, the image will be soft. See the product range.
