How image DPI metadata affects printing
Image DPI is the print-density instruction stored with the file. Some software reads that value directly to decide the default print size, while other tools calculate a size based on both metadata and pixels.
That is why two images with similar dimensions can appear to have different print quality. This checker reads the file locally and shows the metadata in context, so you can compare it with your target print standard.
Common image DPI targets
Default digital display tag
Large-format prints
General print work
Highly detailed print jobs
Metadata is not the whole story
A low DPI tag does not always mean a poor image. Many modern phone photos have enough pixels for strong prints, even when the embedded DPI value is set to 72.
The practical question is not just "what is the current DPI?" It is "how large can I print this image at my target DPI?" That is why the checker also calculates maximum print size.
Frequently asked questions
Does image DPI matter for web images?
Not much. Web display depends mainly on pixel dimensions and layout size. DPI becomes important when the same image is printed or imported into print-oriented software.
Why do two tools show different image DPI values?
Some tools read embedded metadata, while others infer print density from dimensions and default print assumptions. That is why comparing both metadata and print size is helpful.
Can an image be printable even if it shows 72 DPI?
Yes. If the image has enough pixels, it may still print well at smaller physical sizes. The current DPI tag does not automatically limit print quality.
What file types work best with this checker?
JPEG and PNG usually carry the clearest DPI metadata. Other formats may omit it, in which case many apps fall back to 72 DPI as a default assumption.