Image DPI Changer
Set the DPI of JPG and PNG files to 300, 600 or any value for printing, without changing pixels or quality. Runs in your browser, free.
New DPI
300 DPI is the usual print standard; 72/96 is for screens. Changing DPI doesn’t change the pixels — only the size the image prints at.
Drop images here, or click to choose
JPG and PNG · the image isn't re-compressed
Files stay on your device — nothing is uploaded.
How to use Image DPI Changer
- Pick a DPI — 300 is standard for printing.
- Drop in your JPG or PNG files.
- Download the files; the table shows how big each will print.
Good to know
- Your images are processed in your browser and never uploaded.
- JPG files get both the JFIF and EXIF resolution updated, so Windows, Photoshop and Word agree.
Privacy
Runs entirely in your browser. Nothing you enter or open here is uploaded.
Questions
Does changing DPI change the image?
No. The pixels stay exactly the same; DPI only tells printers and apps like Word how big to print it. To get more detail you need more pixels.
A form asks for a 300 DPI photo. Is this enough?
It sets the value the form checks. If the form also has a print size, make sure the image has enough pixels — e.g. 35 mm at 300 DPI needs about 413 pixels.