How to add a tag to multiple posts at once?

Hello, sorry to bother you all. I was wondering if Danbooru has a feature that allows adding a specific tag to a large number of posts at once? I couldn't seem to find an option for this, so I decided to ask here.
A few months ago, I created the tag "washitsu". However, I've noticed that there are a massive number of posts missing this tag. Manually adding it to each post one by one would be extremely time-consuming and tedious. Does anyone know a solution or a better way to do this? Thanks in advance!

You probably want to tag script those.

I would also recommend installing the PostModeMenu+ userscript. It has some handy features, including a "select only" mode which makes it much harder to add (or remove) a tag to a post accidentally with tag scripts. See topic #21812 to install it.

Ylimegirl said in forum #439958:

You probably want to tag script those.

Problem solved! Thanks for the help!

Placeholder1996 said in forum #439961:

I would also recommend installing the PostModeMenu+ userscript. It has some handy features, including a "select only" mode which makes it much harder to add (or remove) a tag to a post accidentally with tag scripts. See topic #21812 to install it.

Alright, thanks for the suggestions!😊

I know that tag scripts are only available for Gold+ users — are there any similar tools for us gold-less peasants?

oatmealplover said in forum #440228:

I know that tag scripts are only available for Gold+ users — are there any similar tools for us gold-less peasants?

Not that I know of, no. With the number of edits you have though, you might get promoted to Builder at some point.

It's more limited in use that tag script, but this userscript can automate adding tags to related posts (same source or childs). I don't think it's limited to certain users. https://github.com/hdk5/danbooru.user.js/blob/master/dist/copy-commentary.user.js