pixivD Tools provided some additional tools people using pixiv_down.
It was merged with pixiv_down in early 2024.
Programs
Remove Unfollowed
This program will go through all of the pixiv users that you have downloaded and check to see if you're following them.
If not, you'll be prompted to delete the directory.
Combine Users
This program will go though all the directories of the pixiv accounts that you've downloaded from and combine any duplicate directories for that account.
You'll be asked which account name you want to use.
The purpose of the tool is to reduce duplicate content that may occur.
For example, an account you follow just started using Fanbox, they may now be including "@ Fanbox" in their display name.
Another common occurance is when the person running an account is counting down to an event or a release date and updates their display name every day.
Download
The easiest way to get the programs is to download the repository and build the programs yourself.
You can download the repository as a .TAR.GZ archive (or .ZIP).
License
Each of the tools are licensed under the terms of the BSD 2 Clause License.
You can find more details in the LICENSE file, or find it online.