How to Fix Low Resolution Images in PDF

Low image resolution is one of the most frequent causes of poor print quality. Even a beautifully designed file will look unprofessional if the images are not sharp enough for print.

What Counts as Low Resolution for Print?

Any image below 300 DPI at the final print size is considered low resolution for standard print jobs. Images from websites are typically 72–96 DPI — far below what print requires.

How to Identify Low Resolution Images

You can use PrintReady247 to check your PDF and get an instant report showing which images are below 300 DPI and where they are in the document.

How to Fix Low Resolution Images

Option 1: Replace with a High-Resolution Source

This is always the best solution. Find the original high-resolution version of the image:

• Check your original design files or photo library
• Download a high-resolution version from your stock image provider
• Re-photograph or re-scan the original subject

Replace the low-resolution image in your design software and re-export the PDF.

Option 2: Check if the Image is Scaled Up

Sometimes an image has enough resolution in its original size but has been scaled up in the design. Reducing the image size in your layout can raise the effective DPI to an acceptable level.

What Does NOT Work

Do not simply upscale the image. Increasing the pixel dimensions in Photoshop or any other software does not create real detail — it only makes the blurriness less obvious on screen while remaining blurry in print.

Prevention: Build Print Files Correctly From the Start

• Always source images at 300 DPI or higher
• Avoid using images downloaded from websites (usually 72 DPI)
• Use vector graphics (SVG, AI, EPS) for logos and illustrations — they scale without quality loss