Image DPI Changer
Change image DPI to 300 (or any value) online and lossless. Check current DPI of JPG or PNG, set a new one, and download. Your files never leave your browser.
Target DPI
Drop images here, or click to browse
JPG & PNG · up to 50 files · checked & converted instantly, never uploaded
Image DPI calculator
Use this built-in calculator with the image DPI changer to see print size at a target DPI, or how many pixels you need for a given print dimension.
Pixels → print size
10.00 × 6.67 in · 25.4 × 16.9 cm
Print size → pixels
3000 × 2001 px
How to convert images with this DPI changer
Add your images to the DPI changer
Drop JPG or PNG files above. The current DPI of each image is detected and shown instantly.
Choose the target DPI
Pick 300 DPI — the print standard — or 72, 150, 200, 600, or any custom value.
Download your converted image
Click Download. The DPI metadata is rewritten losslessly on your device — pixels untouched, nothing uploaded.
Why use this image DPI changer
Check image DPI before you change it
Drop any JPG or PNG into the DPI changer and view its existing DPI metadata before converting.
Lossless DPI metadata rewrite
Only the DPI fields are updated. Pixel dimensions, file quality, and visual appearance stay identical.
Print DPI presets built in
One-click targets for 72, 96, 150, 200, 300, and 600 DPI — plus any custom value your print shop requires.
Batch image DPI changes — up to 50 files
Convert a whole folder of images and download them all as a ZIP — still 100% local in your browser.
Frequently asked questions
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