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For a visual explanation, watch this video to understand what on earth designers are talking about when they tell you they need your images to be higher resolution: https://www.youtube.com/watch?v=XqWFfTrorRQ

What DPI/PPI Actually Means DPI (dots per inch) and PPI (pixels per inch) are often used interchangeably when discussing print resolution, though technically DPI refers to printer dots while PPI refers to image pixels. For practical purposes, when preparing images for print, we focus on PPI. This number tells us how many pixels are packed into each inch of your printed piece. At 300 PPI, there are 300 pixels crammed into every linear inch, creating smooth, crisp details that the human eye perceives as high quality. Lower resolutions like 72 PPI work fine for screens but will appear blurry or pixelated when printed because the individual pixels become visible.

Why Simply Changing the DPI Setting Doesn’t Add Quality Here’s the crucial point many people miss: changing an image’s DPI value without adding actual pixels is like spreading the same amount of butter over a larger piece of toast – you’re not getting more butter, it’s just thinner. If you have an image that’s 1000 x 1000 pixels, it contains exactly one million pixels regardless of the DPI setting. At 100 DPI, it prints at 10 inches square. At 300 DPI, those same pixels print at 3.3 inches square. The image didn’t gain detail; it simply got smaller. To truly improve print quality at a larger size, you need more actual pixels through higher resolution photography, scanning, or careful upscaling with specialized software.

How to Check Your Images Before Sending To verify if your image will print well, divide its pixel dimensions by 300. For example, an image that’s 3000 x 2400 pixels will print beautifully at 10 x 8 inches (3000÷300=10, 2400÷300=8). On Windows, right-click your image, select Properties, then the Details tab to see pixel dimensions. On Mac, right-click and select Get Info to view dimensions. You can also open images in photo editing software to check both pixel dimensions and current DPI settings. If the math shows your image would print smaller than needed at 300 DPI, you’ll need a higher resolution version rather than just changing the DPI number.

If you don’t have images that are not print quality, let’s talk about your options to make what you do have work the best that it can.