One of the most common reasons print images look blurry is low resolution. Understanding DPI is essential for anyone producing print files.
What Does DPI Mean?
DPI stands for dots per inch. It describes how many ink dots a printer places per inch of paper. The higher the DPI, the more detail is printed and the sharper the image appears.
For digital screens, the equivalent is PPI (pixels per inch) — but for print output, DPI is what matters.
What DPI Do You Need for Print?
- 300 DPI — standard for all print jobs (flyers, brochures, business cards, magazines)
- 150 DPI — acceptable for large-format prints viewed from a distance (banners, posters)
- 72–96 DPI — screen resolution only, not suitable for print
What Happens With Low DPI?
Images with less than 300 DPI will appear blurry or pixelated in print. This is especially noticeable in:
- Photographs and product images
- Logos saved as raster images (JPG, PNG)
- Illustrations with fine detail
An image that looks perfectly sharp on your screen at 72 DPI may print at roughly one quarter of the expected quality.
Can You Fix Low DPI by Upscaling?
No. Upscaling a low-resolution image does not add real detail. Software can interpolate new pixels, but the result is still a blurry, low-quality image. The only real fix is to replace the image with a higher-resolution source file.
Check image resolution in your PDF
Upload your PDF to see which images are below 300 DPI — instantly, for free.
Check DPI now →How to Check DPI in Your PDF
You can use PrintReady247 to automatically check the resolution of all images in your PDF. The tool flags any image below 300 DPI so you can replace it before sending to print.