Can an image have no DPI value?

Yes. Missing DPI metadata does not change the image's actual pixel dimensions.

Browser-based utility

Image Resolution & DPI Checker

Q: Does this tool change image resolution?

No. It inspects the image and reports dimensions, megapixels, aspect ratio, file size and readable resolution metadata.

See the actual pixel dimensions and aspect ratio of an image, plus embedded DPI/resolution information when the file contains it.

Check an image

Choose an image to inspect its dimensions, megapixels, aspect ratio, file size and embedded resolution metadata.

Pixels vs DPI

Pixel dimensions describe how many pixels the image contains. DPI is metadata commonly used to suggest a print scale. An image can have large pixel dimensions even when no DPI field is embedded.

Common questions

What is the difference between pixels and DPI?

Pixel dimensions describe the actual image data. DPI is metadata commonly used to suggest print scale.

Can this tool change DPI?

No. It inspects dimensions and readable resolution metadata; it does not rewrite the image.

Does missing DPI mean the image is low resolution?

No. An image can have large pixel dimensions even when it contains no embedded DPI field.

Can this tool change DPI?

No. This page inspects the image and reports the resolution information it can read. Use the pixel dimensions to judge how much image data is actually available; embedded DPI is a separate piece of metadata.

Related image tools

Compress imageReduce dimensions and file size.Crop imageTrim the image to the area you need.Color pickerSample exact colors from the image.How to check image DPIUnderstand pixels, DPI and print-size calculations.Browse image toolsOpen more image converters and utilities.