Change PNG DPI Online
Update the physical meter-density chunk in PNG files to match 300 DPI or custom print density.
100% In-Browser Processing: Physical DPI header metadata is injected directly on your device without server transmission.
Drop your image to change DPI
or browse to upload
Supports JPG, PNG, and WebP up to 25 MB • Converts to 300 DPI, 150 DPI, 72 DPI, or custom value
Safe PNG Chunk Modification
Inject or update the pHYs chunk while preserving all transparency, color profiles, and image data intact.
Frequently Asked Questions
Yes, via the standard PNG pHYs (physical pixel dimensions) chunk.