Guides ·
How to use Image DPI Changer
Image DPI Changer. Set 72, 150, 300 DPI without resampling. No. DPI only tells printers how big to print the pixels.
The short answer
To change image DPI, drop a JPG or PNG, choose a value such as 300 DPI and download. Only the resolution tag in the file header is rewritten, so the pixels stay identical; the tool also shows the print size the new DPI gives.
It runs in your browser. What you enter is not uploaded.
How to use it
Choose your file with the upload box above, or drag and drop it onto the box.
Adjust the options; the preview updates as you change them.
Click the main button to process the file in your browser.
Download the result. Your original file is never changed or uploaded.
Limits worth knowing
Does changing DPI make a photo higher quality? No. DPI only tells printers how big to print the pixels. A 1200×1800 image prints 4×6 inches at 300 DPI or 16.7×25 inches at 72 DPI.
Why does a form ask for 300 DPI? Print shops and some government forms check the DPI tag. Set it here without changing your photo.