6 comments

  1. Jim says:

    Nice article, thank you. I have a question though about WordPress and metadata. When WordPress makes versions of your images at smaller sizes, does the metadata, like copyright and author, stay with the new images? Often it’s a smaller version used in a page, so it wouldn’t be good if those data were missing.

  2. Carl Seibert says:

    Hi Jim,

    >so it wouldn’t be good if those data were missing.

    Darn right!

    Whether WordPress honors metadata on the various versions of the file create when you upload to Media Library depends on imaging library your server is using. By default, WordPress will use ImageMagick, if it is installed and activated. If that’s the case, you’re good to go. All your versions will have proper metadata. There’s a bunch of information on this in this post: https://www.carlseibert.com/wordpress-honors-metadata-sort-of/

    If ImageMagick isn’t on your server (Like, say, here. We haven’t got it set up on the server that serves this site yet, sadly.) WordPress will use the GD library (that’s the name, not what I think about it) that ships with PHP. GD destroys metadata. Doesn’t do as well with images themselves, either. If you’re stuck with GD, there is a workaround, which is described in this post: https://www.carlseibert.com/wordpress-metadata-workaround/

    Upcoming, I plan on doing a chart of hosting providers that support ImageMagick.

    • Carl Seibert says:

      Good work! I took the liberty of saving a copy of your chart for future reference.

      It’s a pity Microsoft appears to be making progress in the wrong direction.

      When I was working on my Creative Commons posts, I came across several documents from about the time Adobe released XMP as an open standard that were all full of optimism about how everybody was going to migrate to XMP and it would all make sense – very soon – from that point in 2009 or so. Microsoft was mentioned. Of course, it hasn’t exactly worked out that way 🙂

      • Sure, it is a Google Docs document, I am still finding out some behaviors and revise it. Most recently I added some old Digital Image Library keyword tags which WPG also reads, and then, interestingly, moves them to xmp when edited.

        For quite some time I have been digitizing all of my family’s photos, painstakingly cataloging and adding metadata as a hobby. I started using Microsoft Digital Image Suite’s Library app which later evolved into Windows Photo Gallery, which I still use today even if it is now unsupported and adding “People Tags”. I also use GeoSetter, which I highly recommend for geotagging and also adding other metadata. Among the things which I like about GeoSetter is that it uses exiftool and allows you to execute post editing exiftool commands which I use to ensure certain tags are in sync.

        I post from time to time about my metadata struggles on my blog – https://jmoliver.wordpress.com

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