If you are a photographer, sharing on Google+ will preserve your images metadata.
There was a study conducted recently by International Press Telecommunications Council (IPTC) to see how your photo’s metadata are modified when shared on the popular social/image sharing sites. The study is completed with a result grid, showing comparison of how each social sites handle your photographs’ metadata. Here’s the result grid, showing results for 9 popular sites where images are shared.
On the right side of the grid (image above) each photo sharing sites are listed, with the date the test is conducted. Moving along, a quick summary of the findings are shown. The next part is the actual test result. A 4 column one, for 4 different tests. To perform this test, IPTC uploaded a test image with all the metadata to each of these 9 sites and downloaded it back from these sites, to see what changes to the image metadata are to be seen.
The changes if any are observed, and listed on these 4 columns. These are,
1. Are the metadata displayed correctly?
2. Does the metadata carry all the 4C’s? Does the metadata have 4C’s – Caption, Creator, Copyright Notice and Creditline.
3. Are the metadata information preserved when downloaded as “Save As” of the largest photo size available? Meaning that, there is no way to download the image other than manually downloading by hitting “save as” on the right-click context menu,
4. Same as above except the images are downloaded by hitting on the download link provided by the image sharing sites.
Each column has the test result for Exif header, IPTC metadata in the IIM header and IPTC metadata in the XMP header.
Every image has the EXIF header, and IPTC header is quiet popular in the Europe.
A grey dot shows the metadata cannot be retrieved or is inaccessible. Green dot means all the metadata are preserved. Yellow dot, means some are and some aren’t. Red dot means all the metadata are stripped off the image. But there’s more to that, you can see it all here.
So, a lot of green dot for a site, shows that it is indeed preserving all the metadata after you upload to them.
Some observation of how the top image sharing/social sites handle the image metadata information,
Surprised there is no Instagram on the list.
500px.com seems to be having problems with the way they handle the image’s metadata, as you are unable to see what’s going on with the metadata after you upload and download it back.
Twitter, pinterest, tumblr and twitpic shows different metadata when downloading it by “save as” and with a download link, The metadata are removed when it is downloaded from the download link provided.
Dropbox preserves the metadata except it removes the 4C and the Exif header are messed up.
Facebook and Flickr’s doesn’t seem to be showing the metadata, Exif metadata is unable to be retrieved.
Twitter in fact removes all the metadata and as well as it isn’t easy to retrieve most of them.
Google plus preserves all the metadata except it didn’t have all the 4C’s in place – Caption, Creator, Copyright Notice and Creditline, which one of these is unknown. Maybe the creditline or copyright notice.
Google plus is a photographers dream of having all their copyright information intact when being shared.
I guess, after this news is out by IPTC, the way these top sites handle image metadata is changed or will be.