Everything You Should Know about Increasing the DPI of an Image

September 25, 2023Amanda Brown

There are several terms for the quality of digital images, such as resolution, pixel, and more. When printing a digital image, you will need to set another item properly, DPI. Professionals, such as designers and photographers, may understand it very much, but the majority of average people do not catch up with this concept at all. Therefore, this tutorial will talk about how to increase the DPI of an image on Windows, Mac, iPhone, and Android.

Increase DPI of Image

Part 1. What Is DPI

DPI stands for dots per inch. It is a specific term for printing an image. A printer is made of millions of tiny dots of ink. The DPI of an image determines the density of dots the printer drops onto each square inch. 300 DPI image, for example, means 300 dots of ink on every inch of the image.

Bear in mind that DPI is not the same as pixels. Changing the former won't affect pixels, or sharpen your image. The printing software usually calculates the DPI of an image according to the resolution. For instance, you have an image with 800 x 1000 resolution. If you print it as an 8 by 10-inch photo, you will have 100 pixels per inch. The actual pixel density would be 100, no matter the DPI value is set to 480, 720, or 1000. In other words, reducing the print size is one way to increase the DPI of the image and make it look sharper. Or you have to increase the resolution to get the sharper look with the same print size. In a word, to get higher DPI and better print quality, increase the total amount of pixels or resolution of the image.

How to Check the DPI of an Image on Windows

How to Check DPI PC
Step 1:
Open a File Explorer and locate the desired image.
Step 2:
Right-click on the image file, choose Properties, and go to the Details tab.
Step 3:
Move to the Image section, and you will see the DPI information of the image.

Note: You can also check the DPI of an image in MS Paint.

How to Check the DPI of an Image on Mac

How to Check DPI Mac
Step 1:
Run the Finder app, and find the image that you wish to check.
Step 2:
Right-click on the file, select Open With, and choose Preview.
Step 3:
Go to the Tools menu, and choose Show Inspector. Then you will find the Image DPI option.

Part 2. How to Change Image DPI to Make It Better

Way 1: How to Increase DPI of Image on iPhone

The easiest way to change the DPI of an image on your iPhone is an app called Picwand. You can download it from your App Store for free. Moreover, there are presets to help you complete the job without technical skills. More importantly, the output quality is impressive.

Picwand App
Step 1:
Run the DPI enhancer app once you install it on your handset. Tap the + icon, select the desired image, and open it.
Step 2:
Choose an appropriate preset, and tap the Upscale button.
Step 3:
After rendering, you will see the effect in the preview panel. Tap Save Now if you are happy with it.

Way 2: How to Change Image DPI with Photoshop

Many professionals prefer to print images using Photoshop. It enables you to change the DPI of images on either Windows or Mac easily. You can follow the steps below to finish the job properly.

DPI Photoshop
Step 1:
Open the desired image in Photoshop.
Step 2:
Go to the Image menu and choose Image Size. Then you will be presented with the Image Size dialog.
Step 3:
Uncheck Resample Image, make sure to select Pixels/Inch from the drop-down list, and input a proper DPI into the Resolution box. At last, click OK.

Way 3: How to Increase DPI of Image on Mac

For Mac users, the easiest way to increase the DPI of an image is the built-in Preview app. It is not only a photo preview tool but also includes a metadata editor. Plus, it allows you to print an image directly.

Change DPI Preview
Step 1:
Head to the Tools menu after opening an image, and select Adjust Size.
Step 2:
Uncheck the box of Resample image on the pop-up dialog. Pull down the list next to Resolution, and choose pixels/inch.
Step 3:
Then type in the target DPI in the Resolution box, such as 300. Click OK to confirm it.

Way 4: How to Change the DPI of Image Online

Online DPI converter apps are another option to change the DPI of your images. They do not ask you to install any software on your desktop. Moreover, some of them are free of charge. We use DPI Converter as an example.

DPI Convert
Step 1:
Visit DPI Converter (https://convert.town/image-dpi) in your browser.
Step 2:
Select an appropriate DPI, and click the Choose Image button to upload the desired image from your disk. When it finishes, the result will be downloaded to your Download folder automatically.

Part 3. FAQs about Increasing the DPI of Image

Can I go higher than 300 DPI?

Yes. In general, 300 DPI will be just fine, but higher DPIs are impossible. Lots of printers can print up to 1200 DPI just fine. Some even reach 2400 DPI.

Is it okay to use 1000 DPI?

The answer is determined by your printer. Most printers support up to 1200 DPI. However, higher DPI than 1000 is too sensitive and it may cause issues for users.

Is 1200 DPI better than 300 DPI?

Generally speaking, the higher the DPI of an image, the better the print quality is. Therefore, 1200 DPI will give you better resolution and quality than 300 DPI. In fact, 300 DPI is the low end of the standard.

Conclusion

Now, you should understand how to increase the DPI of images on Windows, Mac, iPhone, and Android devices. Firstly, you can check the DPI value following our guide and decide how to increase it. Picwand, for example, is the easiest way to get better print quality. If you have other questions about this topic, please feel free to write them down below this post.

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