When you add a work URL to a caption like the ones below, it will automatically be generated as a shorthand link (such as illust/○○○ and novel/○○○)
https://www.pixiv.net/artworks/○○○
https://www.pixiv.net/novel/show.php?id=○○○
* The ○○○ is the work ID.
Additionally, if you'd like to add a link to your profile page, the URL will automatically be shorted as well (as user/○○○)
https://www.pixiv.net/users/○○○
* The ○○○ is the user ID as a set of numbers.