Change Image DPI
Set PNG print density and preview physical size without resizing pixels.
Drop your image here
Drag and drop, or choose a file below
JPG · PNG · WEBP
Up to 250 MB · One image at a time
Each image: up to 16 megapixels and 8192 px per side
DPI metadata does not create detail. Some viewers ignore print density; confirm the physical size in the printing application.
Original
Choose an image or try the sample to see your preview here.
100% local processing
How to use
- 01
Choose an image or try the local sample.
- 02
Choose 36–2400 DPI and check the resulting print width and height.
- 03
Review the result and download the file.
Details and tips
How it works
The decoded image is exported as PNG with a pHYs chunk containing rounded pixels per metre. Pixel dimensions and transparency are retained; original metadata is not copied.
Made for everyday images
Prepare images for print layouts that read resolution metadata.
Frequently asked questions
Are images uploaded?
No. Processing, previews and downloads stay on your device.
What are the limits?
JPG, PNG and WebP, up to 250 MB, 8192 pixels per side and 16 million pixels. Expanded output must also fit these limits. Animation uses one still frame.