Change image DPI online
Set the DPI tag a print shop, page-layout program, or stock photo site checks — without touching a single pixel. Add your images, choose a value, and download the result.
DPI here means exactly one thing: the number written into the file that says how many of its pixels should print per inch. It changes what a program believes about print size, and nothing about the image itself — the same photo tagged 72 and 300 DPI looks identical on screen and contains exactly the same pixels. If you actually want a different pixel size, that's Resize Image, not this.
Your images never leave your device. The tag is rewritten entirely in your browser, so nothing is uploaded, stored, or scanned, and a batch costs no more than a single file.
or drop them here — nothing is uploaded
How to image dpi changer
Add your images
Drop JPG or PNG files into the box, or click to browse.
Choose a DPI
300 is the standard for print. 72 is the old screen-display default some web and stock-photo tools still expect.
Set and download
Press Image DPI Changer. One file downloads on its own; several arrive as a ZIP.
Frequently asked questions
Are my images uploaded anywhere?
No. The tag is rewritten in your browser using JavaScript, so your files stay on your device. You can confirm this by opening your browser devtools Network tab while working — there are no upload requests.
Will this make my image print larger or smaller?
It changes what a program calculates for print size — a 3000-pixel-wide image tagged 300 DPI is meant to print at 10 inches wide, the same image tagged 150 DPI at 20 inches — but the pixels themselves never change. Nothing here resamples the image, so if you need it to physically be a different number of pixels, that's Resize Image.
Why does my image show 72 DPI even though it looks sharp?
72 DPI was the old default screen resolution, and many cameras and editors still write it as a placeholder regardless of how many pixels the photo actually has. It says nothing about sharpness or quality — that comes entirely from the pixel dimensions, which this tool leaves untouched.
A print shop is asking for 300 DPI — is this enough?
It satisfies a check that only looks at the tag, but a real print shop should also be checking your actual pixel dimensions against the print size you want. Setting the tag to 300 on a small image doesn't add detail that isn't there — check Image Dimension Checker if you're not sure your pixel count actually supports the print size you need.
What happens to a file with no DPI tag at all?
One gets added. Not every JPEG or PNG carries this tag to begin with — this tool writes a fresh one rather than requiring an existing tag to edit.
Is there a limit on how many files?
Thirty at a time, which is a limit of your device rather than our policy — everything is held in memory while it works.