Image DPI Converter
Set image print resolution to 300 DPI or another value. Keep pixels unchanged or fit a specified print size in millimeters.
Your input is sent to this site only after you choose Convert on server. The conversion runs for this request and no history is saved. Upload up to 4 MiB combined; Office files have a 2 MiB limit.
Choose your file
Choose a file or load the example to see how the converter works.
Choose your options
The defaults work for most files. Change a setting only when you need to.
How to use Image DPI Converter
- Choose your file or load the example.
- Review the settings and the format notes before continuing.
- Select Convert on server and download the result.
Separate pixel dimensions from print resolution
DPI metadata tells a printing application how densely to place an image’s pixels on paper. Changing that number alone does not add detail. In the keep-pixels mode, the oriented image retains its pixel width and height while the output JPEG receives your selected density. A six-hundred-pixel width at three hundred DPI describes a two-inch print width, regardless of how large the same image appears on screen.
Resize only when the destination needs it
In print-size mode, millimeter dimensions and DPI determine the new pixel canvas. The image is fitted inside that canvas with white padding so it is not stretched out of proportion. Enlarging a small source interpolates existing detail rather than recovering information that was never captured. JPEG output flattens transparency over white. The final canvas is bounded to sixteen million pixels, and actual printer scaling settings can still affect the physical output size.
Where is my file processed?
The selected file is sent to this site only when you run the server conversion. Processing uses memory without a saved conversion history.
Is input uploaded?
This tool sends input to this site’s conversion API after you select Convert on server. Files use bounded workers and, when needed, private temporary folders deleted after processing or cancellation. No conversion history is saved. The converter does not upload files to a third-party conversion service.