DPI Inspector

Check Image DPI Online

Drop any JPG or PNG to see its pixel dimensions, its DPI tag, the size it prints at 300 DPI, and whether it has the pixels for the size you actually want. Know before you submit to Amazon KDP or a print shop. Secure Files are read locally — nothing is uploaded.

Drop images to inspect

or click to browse · JPG & PNG

Check multiple files at once

300 DPI or higher — print ready Below 300 DPI — may need conversion No DPI metadata found

How to Check Image DPI

The easiest way is the tool above — just drop your image and see the result in under a second. But you can also check DPI through your operating system:

Windows

  1. Right-click the image file
  2. Click Properties
  3. Go to the Details tab
  4. Look for "Horizontal resolution" and "Vertical resolution"

macOS

  1. Open the image in Preview
  2. Go to Tools → Show Inspector (⌘I)
  3. Click the Info tab — DPI is listed under "Image DPI"

What DPI Should My Image Be?

Use CaseRecommended DPI
Web / screen display72–96 DPI
Standard print (flyers, posters)150–300 DPI
High-quality print (books, photos)300 DPI
Large format print (banners)72–150 DPI at final size
Amazon KDP300 DPI minimum

Frequently Asked Questions

What does the DPI number here tell me?

It shows the resolution tag stored inside the file, which is the size instruction your image carries to a printer or a layout program. It is not a measure of how much detail the image holds; that comes from the pixel dimensions.

Why does my file say No DPI metadata?

Plenty of images carry no resolution tag at all, which is perfectly valid. Software then falls back to its own default, commonly 72, when deciding what physical size to give the image.

My camera photo reads 72 DPI. Is something wrong with it?

No. Cameras write 72 by default and the number says nothing about quality. A 24-megapixel photo tagged 72 DPI contains exactly as much detail as the same photo tagged 300.

Does a low reading mean my image will print badly?

Not on its own. What matters is pixels divided by printed size. A low tag usually means your layout program will place the image too large, and that is what produces a soft print, so it is worth correcting.

What DPI do I need for printing?

Print shops and Amazon KDP ask for 300 at the size the image is printed. Work out your requirement by multiplying the printed width in inches by 300.