The scenario
A customer sends a logo labeled "300 DPI" but it is only 400 pixels wide. Printed 10 inches across on a shirt, it would look soft and blocky. The number that matters is pixels compared with the final print size.
The definition
PPI (pixels per inch) describes how many image pixels fit in each printed inch; DPI (dots per inch) describes how many ink dots a printer lays down. People often use DPI to mean both.
The simple math
Divide the image's pixel width by the print width in inches. A 3000-pixel-wide image printed 10 inches wide gives 300 pixels per inch. The same image printed 20 inches wide gives 150.
- Common target: about 300 PPI at the final print size.
- Large signs viewed from a distance can often use less.
- The label inside a file ("72 DPI") means little on its own — pixel dimensions matter.
Why upscaling does not fix it
Enlarging a small image in software adds pixels by guessing; it does not create real detail. Starting from a larger original or a vector file gives the best result.
How to check your file
Look at the image's pixel width and height (in file info or an image editor) and compare against the size you want printed.
Apply resolution to your whole brand
A small social-media graphic is not automatically a usable banner file. A photo for a business card, a poster and a shirt can require different crops and pixel dimensions. GMB can help you decide whether to use a larger original, rebuild the logo as vector artwork or choose a different layout through a scoped artwork project.
At a glance
| Print width | Pixels needed | Example use |
|---|---|---|
| 3.5 in | ≈1050 px | Left-chest logo |
| 10 in | ≈3000 px | Full front print |
| 12 in | ≈3600 px | Large back print |
Common mistakes
- Changing a file's DPI setting and assuming it is now high resolution.
- Pulling a logo from a website or social media.
- Upscaling a tiny image to poster size.
Get artwork reviewed for your GMB print project
GMB artwork and print services help business owners prepare logos and images for apparel, signs, banners, posters, business cards and stationery. Send the actual file with the final size and viewing distance so the team can assess suitability before you commit to a product.
Bring these details to your project
- Original image with pixel dimensions intact
- Final printed width and height
- Product type and how close people will view it
Quick quiz
Three beginner questions. Pick an answer to see instant feedback.
FAQ
Is 300 DPI always required?
It is a common target for close-viewed prints like apparel. Large-format signs viewed from a distance can often work at lower resolution.
Do vector files have DPI?
No. Vectors scale to any size, which is why they are preferred for logos.
Can you tell if my file is big enough?
Yes — share it through the quote portal with your intended size and the team will review it.
Check your artwork before you order
Upload your file and intended print size through the quote portal for an artwork review.
Next lesson
Transparent Backgrounds →
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