We don't really create software features purely for Wikipedia alone.

• Does your mobile device's browser not have it's own bookmark feature? Are you aware of other mobile browsers which don't provide that?
• What Phabricator projects are relevant here?
• Is this relevant to Gather?
• Is this a MediaWiki extension request?
• Is this something you expect to be implemented into MediaWiki core?

In T91902#1098692, @Krenair wrote:

• Does your mobile device's browser not have it's own bookmark feature? Are you aware of other mobile browsers which don't provide that?

Yes but it's not shared across devices as I said. And even if that was somehow possible: it's not always just about the technical feature but also the accessibility especially to less experienced users. And besides of that there's many other potential uses that are only possible if a Wikipedia-internal bookmark-system is used (such as features for organization, sharing and sorting them).

• What Phabricator projects are relevant here?

I hoped more knowledgeable users in here might know this. It's relevant to Wikipedia with all its direct subprojects (saying: sideprojects such as WikiMedia are not necessarily included but could be included as well).

• Is this relevant to Gather?

Yes! nice finding. I'm wondering why that's intended to be just for WikiMedia. Its usefulness for Wikipedia is pretty obvious so I'm gonna ask them.

• Is this a MediaWiki extension request?

No, a Wikipedia one.

• Is this something you expect to be implemented into MediaWiki core?

No - only optionally. And sincerely I don't know which Phabricator-Projects are related here since I only know the Wikipedia sideprojects and would need an explanation for each of them to be able to correctly categorize this issue if that's expected. For what I know it's related to any backend and frontend project that is responsible for the surface & functionality of the official Wikipedia (articles) on any device.

In T91902#1099033, @Aklapper wrote:

• Why can't the existing Watchlist not be used for this?

By using it for bookmarking articles you'd add articles that you don't want to watch but would like to just bookmark - hence it will clutter up your Watchlist causing it to be less effective etc. People couldn't use both the Watchlist AND a bookmarked-list, they'd have to decide if they misuse that function for another for which it is entirely not designed for (btw there are also other problems with this approach such as the articles not being linked but plain text) or if they go without a bookmark-list. Really those are 2 completely different things. There might be a very small minority who would like to watch all the articles they bookmark but that's not the general case.
To give an example: let's say you bookmark hundreds of articles primarily for read-later reasons (note: one possible feature for bookmarks would be different [sharable] folders of bookmarks) and you're also watching a handful of pages and make active use of the Watchlist for articles you edited yourself or which are often vandalized or about which you know a lot about - the hundreds of "watchmarked" articles would probably cause the user to not make use of the Watchlist anymore or at a minimum cause the Watchlist to be highly inefficient.

Some previous discussion in T27501#302368, e.g. an old idea for a "Read later" button in https://www.mediawiki.org/wiki/Collection_Extension_2#Wireframe_Layout_for_placing_the_print_and_Collection_extension_buttons

Another great find, thanks! However it seems to be an extension - my issue is about official Wikipedia to incorporating this idea instead of having less-usable and less-used external tools taking care of this.

In T91902#1114482, @Fixuture wrote:

In T91902#1098692, @Krenair wrote:

• What Phabricator projects are relevant here?

I hoped more knowledgeable users in here might know this. It's relevant to Wikipedia with all its direct subprojects (saying: sideprojects such as WikiMedia are not necessarily included but could be included as well).

• Is this relevant to Gather?

Yes! nice finding. I'm wondering why that's intended to be just for WikiMedia. Its usefulness for Wikipedia is pretty obvious so I'm gonna ask them.

• Is this a MediaWiki extension request?

No, a Wikipedia one.

Please read https://www.mediawiki.org/wiki/Differences_between_Wikipedia,_Wikimedia,_MediaWiki,_and_wiki

In T91902#1114526, @Krenair wrote:

Please read https://www.mediawiki.org/wiki/Differences_between_Wikipedia,_Wikimedia,_MediaWiki,_and_wiki

Well as said I know of the different Wikipedia-sideprojects but I don't know which Phabricator projects are what since they apparently aren't the same (there's no "Wikipedia" to select for instance). By that link I was correct with saying that it's intended for Wikipedia...

Note there is a Reading List feature, though it is only available in Apps. See https://www.mediawiki.org/wiki/Wikimedia_Apps/Synced_Reading_Lists.