To change the DPI (dots per inch) of an image, you can use image editing software such as Adobe Photoshop, GIMP (GNU Image Manipulation Program), or other similar tools. Here’s a general step-by-step guide on how to change the DPI of an image:

Using Adobe Photoshop:

1. Open the Image: Launch Adobe Photoshop and open the image you want to modify.
2. Access Image Size: Go to the “Image” menu and select “Image Size.” This will open a dialog box displaying the current image dimensions and resolution.
3. Change DPI: In the Image Size dialog box, you’ll see a field labeled “Resolution” or “Pixels/Inch” (PPI/DPI). You can change this value to your desired DPI. Make sure to uncheck the “Resample” option to maintain the original pixel dimensions of the image.
4. Resample the Image (Optional): If you want to change the physical dimensions of the image while maintaining a specific DPI, you can check the “Resample” option and adjust the width and height in the same dialog box. Keep in mind that resampling may result in a loss of image quality.
5. Apply Changes: Click “OK” to apply the changes. Photoshop will adjust the DPI of the image accordingly.
6. Save the Image: After making changes, remember to save the image. Choose the appropriate file format and save it with the new DPI setting.

Using GIMP (GNU Image Manipulation Program):

1. Open the Image: Launch GIMP and open the image you want to edit.
2. Access Image Properties: Go to the “Image” menu and select “Print Size.” This will open a dialog box displaying the current image dimensions and resolution.
3. Change DPI: In the Print Size dialog box, you can adjust the “X Resolution” and “Y Resolution” fields to set the desired DPI. Ensure that the “Linked” checkbox is selected to maintain the aspect ratio.
4. Resample the Image (Optional): If you want to change the physical dimensions of the image while keeping a specific DPI, you can uncheck the “Resample Image” box and adjust the width and height. Resampling will change the pixel dimensions.
5. Apply Changes: Click “OK” to apply the changes. GIMP will adjust the DPI of the image.
6. Save the Image: After making changes, save the image using the preferred file format, ensuring that the new DPI setting is preserved.

Keep in mind that changing the DPI value will affect how the image is printed, but it won’t affect its appearance on a screen. When adjusting DPI, it’s important to consider the intended use of the image, whether it’s for printing or digital display, and make the appropriate adjustments accordingly.

VIEW IMAGE METADATA INCLUDING DPI WITH THIRD-PARTY APP:

There are third-party apps available on the App Store that can display image metadata, including DPI, if available in the image file. Our App “Exif Viewer by Fluntro” can provide you with detailed information about an image’s properties, including resolution and DPI.

Appstore Link: – https://apps.apple.com/us/app/exif-viewer-by-fluntro/id944118456

1. Visit the App Store on your iPhone or iPad.
2. Search for “EXIF viewer by Fluntro“.
3. Download and install the app. EXIF Viewer app allows you to view image metadata, including DPI, height, and width.

VIDEO SHOWING HOW TO VIEW DPI OF AN IMAGE ON IPHONE OR IPAD:

Checkout the preview video of Exif Viewer by Fluntro:

RELATED TOPICS: 

– HOW TO CHECK THE DPI OF AN IMAGE ON DIFFERENT PLATFORMS

– HOW TO VIEW DPI HEIGHT AND WIDTH OF AN IMAGE ON IPHONE AND IPAD

– UNDERSTANDING DPI VS. PPI: A COMPREHENSIVE GUIDE

– COMMON MISCONCEPTIONS ABOUT DPI