How to Increase Photo Size & DPI

By Kathryn Hatter

When you store digital photographs on your computer hard drive, you have a variety of options for editing and printing your photos. Using a graphics-editing program, you can crop, enhance and resize your digital photos and then print them. With a basic understanding of photo resolution, you can successfully increase photo size to print larger pictures as long as you keep the dots per inch (DPI) adequate for high-quality printing resolution. Increase photo size and DPI carefully to create a clear and crisp printed photograph.

Things You'll Need

  • Graphics-editing software
  • Digital photograph
  • Photo paper
  • Color printer

Step 1

Open the graphics-editing software. Click "File" and "Open" to open the digital photograph you wish to edit. Navigate to the location where you store the digital photograph, highlight it and click "Open."

Step 2

Click a tab within the software that enables the editing of the digital image. In many graphics-editing programs, this will be the "Image" tab. Select "Resize" from the drop-down menu.

Step 3

Place a check mark beside the setting that locks the aspect ratio of the photograph to ensure that you keep the width and height in correct proportion to each other.

Step 4

Find the resolution setting within the resizing window and increase it to either 200 or 300 DPI. For the most high-quality photo printing, use 300 DPI.

Step 5

Find the fields that set the pixel width and height. Click the arrow beside either the width or the height field to increase the pixels. Because you locked the aspect ratio already, as you increase one dimension, the other will increase proportionally.

Step 6

Load photo paper into your color printer to print your digital photograph. Click "File" and "Print" to print your photograph.

Tips & Warnings

  • Experiment with raising or lowering these settings. You can also set the print size you desire in inches and the pixel dimensions will change proportionally according to the resolution you choose.

References & Resources