Quote:
Originally Posted by rvs
On most pdf's it's very easy to create bookmarks, and often reasonably easy to use them if you don't use too many. I don't know if there's a theoretical limit on the amount of bookmarks, but I've seen behavior where the DR becomes very slow when using a lot of bookmarks (say 20+), though I'm not sure if this only happens with certain books.
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Some technical detail: Bookmarks are stored in the local metadata.db files. When you bookmark a page, a thumbnail of the page is also stored in the database. So the limitations for bookmarks seems to be the size of your SD-card.
W.r.t. performance I do not know how many bookmarks impact it. The code for that is in the closed-source UDS-program. Maybe the thumbnails of the bookmarks are read into memory (it at least needs to read the location to make the special marks on the pages) causing performance problems if there are too many?