The xpacket header is not present in Preview generated keyword, and the XMP Toolkit is different.

However, in Preview or Finder info panel, no 'ViaExifSubject' is found.Īlternatively, using OSX Preview to add comments (Open in Preview, Show Inspector, Go to Keywords tab, click '+' to add keyword). PNG_transparency_demonstration_1.pngĮxiftool -xmp -b. The difference here I see here in the XMP raw data, where exiftool newly creates a header, while Preview does not.Īs an example, look at the following PNG from the Wikipedia page on PNG without metadata :Īdding a keyword using exiftool, and afterwards dumping the XMP datablock: exiftool -xmp-dc:subject=ViaExifSubject.

In contrast, if I first add a tag in Preview and use exiftool to add a new tag later, this IS indexed. However, exiftool-added tags do not seem to be picked up by neither Preview nor SpotLight. The added tags, such as 'keywords', are all visible in OSX (mountain lion) Finder, Preview and nicely indexed by Spotlight.įor PNGs I need to fallback to XMP as this is the metadata container for PNG. Around my image processing software I use exiftool to successfully shuffle around exif info from Cr2, TIFF, JPG files.

Exiftool video xmp