PNG DPI Changer
Change PNG print resolution metadata without resampling pixels.
PNG DPI Changer
Change PNG print resolution metadata without resampling pixels.
PNG only, up to 20 MB. Set 1–2400 DPI. Replaces pHYs with equal horizontal and vertical pixels per metre; pixel streams and other chunks are retained. PNG chunk checksums must be valid. Metre conversion rounds the stored DPI; print software may ignore it. JPEG and other formats are unsupported.
Files stay in this browser. No upload or draft storage.
Download resultA QUICK WALKTHROUGH
How to use this tool
- Choose a supported file.
- Adjust the fields below.
- Create and review the result, then download it.
Scope and limits
PNG only, up to 20 MB. Set 1–2400 DPI. Replaces pHYs with equal horizontal and vertical pixels per metre; pixel streams and other chunks are retained. PNG chunk checksums must be valid. Metre conversion rounds the stored DPI; print software may ignore it. JPEG and other formats are unsupported.
GOOD TO KNOW
Common questions
Are files uploaded?
Files stay in this browser. No upload or draft storage.