mastodon-post-scheduler

a basic web ui for scheduling posts on mastodon

how to get an access token

create/login to a mastodon account
go to Preferences > Development > New application
give it whatever name you'd like (this will show up in the app field of the post)
include the scopes read:statuses, write:media, and write:statuses
once created, select it and copy Your access token

posts scheduled with this tool use your default language setting
instances have their own post length/attachment limits, which this tool does not check for you
this tool does not store any data: it fetches and posts on your behalf, but the actual scheduling is handled by your instance
when posts are scheduled in the near future, your instance may post them immediately instead of scheduling them (default is <5min)
the "in reply to" field can be post URL or ID, but if it's from another instance, make sure to use the reference from your own instance instead of theirs