PNGCommentator is a simple GUI tool for creating and editing metadata in PNG image files. Using PNGCommentator, standard or custom metadata fields can be created at the click of a button and information can be typed directly into them.
What’s new in version 1.3.2
Version 1.3.2:
Minor bug fixes
PNGCommentator for Mac
Free
In English
Version 1.3.2
What users say about PNGCommentator
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Abandonware. But it still works on macOS 12! It's a very simplistic interface, but useful. Many image apps provide the same metadata options. But for free, this is nice.