is there a way to download from danbooru/gelbooru by tags?

[hardnyasha]

Hello. As said in the title, is it possible to download from sites like gelbooru/danbooru/sankakucomplex or etc by tags?
For example, i'm using this link in the hitomi app: https://danbooru.donmai.us/posts?tags=cassandra_%28seishun_katsu_sando%29&z=5
but the app says invalid. Is there a way to fix this?
Anyway, thanks for the app author
P.S. sorry if i didnt find a similar topic, used the search didnt find what i need