I work for an association and every time i get the material for a new blog post i need to format, publish it on the blog and then design different types of post for FB, IG and Telegram with their own formatting. That requires plenty of time and work.

Ideally, i would love to create a blog where i can publish items ONE TIME, and then get social designs (with one or two alternative types of designs) and getting the text formatted right to be published.

The website is on wordpress right now, but i'm studying webdevelopment and i would really love to remake it in plain code with HTML, CSS and JS / JS frameworks. I'm not seeking to do this on Wordpress, on the opposite i would like to move away from it.

I know i would have to work with the APIs of the socials in order to get the content automatically published and with AI to get a quick text formatting: for example cutting some key parts of a text automatically. I have no clue for the design part, right now i'm using Canva but i always do pretty simple designs and all by hand.

I know this is probably a pretty ambitious project but it would leave me with A LOT less work once all of this is correctly set up, and replicating this for other blogs would simply be awesome.

How much is this makable? Would it require a lot of paid services, are the APIs usually free for such a small use? Where should i start from to learn how implementing the auto design part? Can a Junior webdeveloper do something like this in a reasonable amount of time, or are these pretty advanced skills?