4 comments

  1. Seifeldin AlKhedir says:

    Dear Mr.Carel
    I looking for same your topic, i have image but the some part metadata not existed because downloaded from Facebook, i want to know who first man uploaded it on faceback and take it by owns camera.
    Please can you help me?
    Kind regard
    Seifeldin AlKhedir
    saifeldinkhedir@gmail.com

    • Carl Seibert says:

      If, IF, the person who uploaded the image to Facebook put his or her name and copyright information on the photo in the appropriate IPTC fields, that information should still be on the image when you download it. The Creator and Copyright fields are the only ones that survive a trip through Facebook. If the original uploader did not fill in those fields, you’re pretty much out of luck. All the Exif and all the other IPTC fields will have been removed. Your best chance at finding anything out about such a picture is to try to find the picture with reverse image search, either through Google or TinEye. Of course, Facebook knows exactly who uploaded it. But they won’t tell you 🙁

  2. Carl Seibert says:

    I had a bit of a databse issue on this site and I had to restore a backup, taking the site back a couple days. In the process I destroyed a comment from reader JB on this post. So, I’m rescontructing it from the notification email the server sedns out when you post a comment. Apologies to JB!

    From JB:

    This is slightly an “aside” comment because it pertains only to website links uploaded to Facebook, of which pictures are a subset.

    Facebook has also been adding a parameter to HTTP GETs when users click on uploaded links. In other words, if I post a link to direct users to a photo gallery on my website, and another Facebook user clicks on it, a similar long encoded string is sent to my website along with their request. It looks like this:

    GET /GALLERY/index.php?cat=10&fbclid=IwAR3DDgRkLMZicMTiaqrF19qdmsr4MIMfncNIQ3qDMd9MJUSdWJ-taXtfb4A

    Everything after the “&” was added by FaceBook.

    It seems to be unique per user, and it seems to be static. In other words, if the same user connects a month from now, the encoded “fbclid” string will be the same.

    I don’t see how Facebook itself would benefit from doing this. Website owners might benefit from this because now they can determine how many hits came through the Facebook platform, and how many different IP addresses and web bowzers they have. If the website owner is a Facebook partner, then there could be some business collaboration based on that number. But it seems benign compared to Google, Akamai, and all the other H.Pylori Web Monsters out there.

    Some web developers complain about the added parameter because sometimes they write code that depends on the exact format of the URL passed to the server.

  3. Carl Seibert says:

    Indeed. It seems backwards to me, too.

    Whatever it is, Facebook is doing it openly. Which is either transparency or arrogance. Who knows….

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