METADATA ONLY • NO RECOMPRESSION • PRIVATE
Change your image's DPI or PPI.
Update the print-resolution metadata in a JPG or PNG without resizing or recompressing the image. Everything happens locally in your browser.
Drop a JPG or PNG here
or click to choose a file
The image is processed on your deviceIMPORTANT TO KNOW
Changing DPI does not add detail.
For example, a 3,000-pixel-wide image at 300 PPI has a suggested width of 10 inches. The same 3,000 pixels at 150 PPI suggest a width of 20 inches. The image data itself is unchanged.
Use the Pixels to Print Size Calculator to compare physical sizes before choosing a value.
HOW IT WORKS
A lossless metadata update
JPG files: PixGauge updates the standard JFIF density field and compatible EXIF resolution fields when present.
PNG files: PixGauge writes a standard pHYs resolution chunk.
The original compressed image data is copied rather than decoded and re-encoded, avoiding the generation loss that can occur when saving a JPEG again.
COMMON QUESTIONS
DPI changer FAQ
Can I change an image from 72 DPI to 300 DPI?
Yes. PixGauge can update the embedded print-resolution value to 300 PPI. The physical print-size instruction changes, but the number of pixels and the visible image detail do not.
Will this resize or recompress my image?
No. The tool updates only resolution metadata. It preserves the original pixel dimensions and compressed image data.
Why do some websites require 300 DPI?
Some print services and submission systems check for a 300 PPI metadata value. You should still verify that your pixel dimensions are large enough for the intended physical size.
Is my image uploaded?
No. Reading, changing, and downloading the image all happen locally in your browser.