photo-album

A  photo album  is another name for a collection of photos.

Ryan Barrett

 * https://snarfed.org/2012-07-02_sailing_the_greek_cyclades

Grant Richmond

 * Uses PhotoPostr to create albums such as https://grant.codes/2017/11/23/5a172628023c9d2ae6fbbe9a

PhotoPostr
PhotoPostr is a micropub client specifically for posting photo albums.

Flickr
has posted several public photo albums on Flickr:
 * https://www.flickr.com/photos/aaronpk/sets/72157647960517594
 * https://www.flickr.com/photos/aaronpk/sets/72157634420147440

Flickr albums have:
 * a featured cover photo
 * a name
 * a description
 * photos can be ordered within the album

The Flickr API supports updating the order of the photos within an album. To specify an order for items in an album, the request simply includes the list of items you want to change, in the new desired order. The benefit of this that it works on any subset of the photos in the album, regardless of whether the interface is operating on a small subset of the album.

Google Photos
has created a couple public and private albums on Google Photos:
 * https://goo.gl/photos/4o4e6u2w1nyKZbVH9

Albums on Google Photos have:
 * a featured photo (used as the album thumbnail when viewing a list of albums)
 * a name
 * shows the date range of photos within the album
 * photos can be ordered within the album
 * can be set to allow other people to add photos to the album
 * albums can accept comments
 * individual photos can accept comments (comments on individual photos are not shown on the album as a whole, only on the individual photo)



Dropbox
has created some public albums on Dropbox:
 * https://www.dropbox.com/sc/f9jwepbz451t3ub/AACeqoRqNy4ZRWdD2-sq7DOQa

Albums on Dropbox have:
 * a name
 * shows the number of photos in the album
 * there appears to be no way to select the ordering of the photos within the album

Facebook
has created some pubic and private albums on Facebook:
 * https://www.facebook.com/media/set/?set=a.508859464506.2104746.11500459&type=1&l=5ef875d625

Albums on Facebook have:
 * a name
 * a location
 * a description
 * privacy settings (using standard Facebook privacy, e.g. public, your friends, family, groups, etc)
 * person tags
 * photos can be ordered within the album
 * albums can accept comments
 * individual photos can accept comments (comments on individual photos are not shown on the album as a whole, only on the individual photo)
 * albums can be set to allow others to add photos to the album
 * can generate a public link to the album that allows viewing even without a Facebook account



Difference from Multi-Photo
While both photo albums and multi-photo posts contain multiple photos, the main difference seems to be that a single photo can appear in multiple photo albums, and each photo in an album has its own URL with its own properties such as name, tags, etc, and each individual photo can usually accept comments independent from the album. With a multi-photo post, the post as a whole has properties such as name, tags, etc, but the individual photos within it do not have their own post URL and are just the raw image URL.