Use this free tool to change the DPI of any image without software.
The DPI (dots per inch) of an image is simply metadata embedded inside the image (header). The actual quality (resolution) of the image (within the file itself) is not affected when its DPI value is adjusted.
The DPI value is read by some devices (such as printers) to determine how your image should be presented on a medium (such as paper). For example, a printing shop may request that a photo is submitted with 300 DPI rather than 72 DPI. The printer would then output a larger number of dots for every inch, resulting in a sharper image.
An image DPI value may be changed by opening the file inside MS (Microsoft) Paint, Adobe Photoshop or Illustrator. However, it is much simpler to change the DPI of an image using the tool provided above.
How to change the DPI of your image
- Enter the desired new DPI value into the text box above (e.g. 72 or 300)
- Click the blue "choose file" button and select your image file (or drag your image file onto the ellipse)
- A new image (with your chosen DPI) will automatically download
This tool supports JPG, PNG, TIF, BMP and ICO. You may change your DPI to any value you like.
One other thing to note is that the DPI value of a digital image is sometimes also referred to as PPI (or Pixels Per Inch). A printer produces dots and a monitor produces pixels, so this name attempts to provide context when an image is digital. However, this just serves to confuse things further as the DPI (or PPI) value is only relevant (in practice) outside of the digital world.