A Comprehensive Guide: How to Check DPI of an Image Easily and Accurately

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If you’ve ever worked with digital images, you might have come across the term DPI. But what is it, and why is it so crucial for image quality? This guide will provide you with all the necessary information about DPI, how to check it, and why it’s important in different contexts. With easy-to-follow tutorials and comprehensive explanations, you’ll learn how to check the DPI of an image effortlessly and accurately.

Understanding DPI

Explanation of DPI

DPI stands for Dots Per Inch, a measure that designs how many pixels or dots of an image fall in a linear inch. It is a critical factor in defining the resolution and quality of an image, both in print and digital form.

Usages and Effects in Various Mediums

DPI plays a crucial role in various mediums. For example, a higher DPI ensures greater detail in print quality, whereas images with low DPI might appear pixelated or blurred. Similarly, on digital screens, a higher DPI can enhance the clarity and sharpness of an image.

Standard DPI Values for Different Needs

Depending on the usage, different DPI values are considered standard. For instance, for digital display, 72-96 DPI is usually sufficient, while for high-quality printing, a DPI value of 300 or above is preferred.

How to Check DPI of an Image

Checking DPI on Windows

Using File Properties

Right-click on your image file, select properties, then details. Here you’ll find the DPI under the horizontal and vertical resolution tags.

Using Paint

Open your image with Paint, select File, then Properties. Here, the DPI can be seen under the “Resolution section.

Checking DPI on Mac

Using Preview

Open your image with Preview, select Tools, then Show Inspector. Here, the DPI can be located under the “Resolution heading.

Using Apple’s Digital Color Meter

This tool also allows you to check the DPI. Simply open your image, select View, then Show Image Properties. The DPI value will be displayed under the “Resolution heading.

Check DPI Using Online Tools

Using Image Analyzer

Upload your image to websites like Image Analyzer, and it will automatically display the DPI.

Using Convert Town

Similarly, you can use Convert Town to upload your image and check its DPI. The website provides the DPI value instantly after upload.

How to Change the DPI of an Image

Changing DPI Using Adobe Photoshop

In Photoshop, you can change the DPI by selecting Image, then Image Size, and finally changing the Resolution value.

Changing DPI Using GIMP

Similarly, in GIMP, select Image, then Scale Image, and adjust the X and Y resolution for DPI changes.

Change DPI Using Online Tools

Websites like Convert Town and Image Size also allow you to alter the DPI of your image by uploading it and selecting the desired DPI value.

Importance of Correct DPI in Printing

Comparing Print Quality at Different DPI

Images with higher DPI values produce more detailed and sharp prints than those with low DPI. If the DPI is too low, the print could appear blurred or pixelated.

Understanding Printer DPI and Image DPI

Printer DPI and image DPI are not the same. Printer DPI refers to the number of ink dots a printer can place in one inch of paper, while image DPI pertains to the pixel count in the image itself for each inch.

Importance of Correct DPI in Screen Display

How Screen Resolution Affects DPI

The resolution of a screen can affect how an image appears; a high-resolution screen displaying a low DPI image might make the image look blurred or grainy.

Explaining PPI Vs DPI

DPI is often confused with PPI (Pixels Per Inch). While DPI refers to the number of physical dots of ink or toner used by a printer to reproduce an image, PPI describes the number of pixels in a digital image.


Checking and adjusting DPI is crucial for anyone working with digital images. It not only ensures high-quality prints but also keeps images looking sharp on screen. We hope that this comprehensive guide will provide all the knowledge you need on the subject.

Frequently Asked Questions

What is a Good DPI for Printing?

A DPI of 300 or above is normally considered good for printing.

Does DPI Affect File Size?

Yes, higher DPI can result in larger file sizes as it increases the pixel information in the image.

What is the Difference Between DPI and PPI?

PPI is about the number of pixels in a digital image, while DPI refers to the physical dots of ink that a printer places on a piece of paper.

Does DPI Matter on Digital Screens?

Yes, DPI can impact the clarity and sharpness of an image displayed on screens.

How Can I Increase the DPI of an Image Without Photoshop?

There are several online tools like Image Size and Convert Town which allow you to increase the DPI of an image.

Can I Check the DPI of an Image on My Phone?

Yes, there are several apps available on both iOS and Android that let you check the DPI of an image.