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tannerhelland / PhotoDemon

A free portable photo editor focused on pro-grade features, high performance, and maximum usability.
https://photodemon.org
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SaveAs png---missing pHYs #493

Closed Charltsing closed 9 months ago

Charltsing commented 9 months ago

test.zip

SaveAs png---missing pHYs, instead of Tiff tag

SaveAs

tannerhelland commented 9 months ago

Thank you for reporting this issue, @Charltsing . The latest nightly builds now write a pHYs tag with resolution data when exporting PNG images.

(Note that PhotoDemon did embed resolution data inside a PNG's XMP metadata block - which has been the norm for 20+ years - but this fix enables the ancient PNG-specific pHYs mechanism for trading resolution with software that does not support XMP.)