Free AI Social Media Post Generator for Authors
Generate three post options for X, Instagram, TikTok, LinkedIn and Facebook groups from your book, each written for how that platform reads, and each arriving with a finished graphic composed from your real cover, title and author name at the exact size that platform wants.
How the social post generator works
Three steps turn one book into a week of posts that each sound native to the platform they run on.
Describe the book
Give the title, the genre, and a short description. Attach a book from your library and the generator reads the real blurb, keywords and chapters instead of guessing.
Pick your platforms
Choose the channels you actually post on. Each one costs 20 credits and comes back with three complete options on three different angles: a thread for X, a caption and hashtags for Instagram, spoken beats for TikTok, a professional angle for LinkedIn.
Edit the graphic and post
Every option arrives with its graphic already composed from your cover, title, author name and link. Switch template, edit any line of text and re-render as often as you like — all of it is free — then download the PNG, the carousel, or the vertical reel and post it.
Who uses the social post generator
Writing promotion copy is a different skill from writing books. These authors use the tool to stop staring at an empty compose box.
Authors in launch week
You need several posts a day across channels and no time to write them. Generate the set in one run and spend your energy replying to readers instead.
Writers who dislike self-promotion
Talking about your own book feels awkward. Start from drafts that lead with the story rather than the sale, then soften or sharpen them to sound like you.
Backlist authors
An older title still sells when it stays visible. Generate fresh angles on a book you published years ago and keep it circulating.
Frequently asked questions
Three complete options for every platform you select, each on a different angle, with the post body, hashtags and posting notes — and a finished graphic: a wide card for X and Threads, a four-slide carousel for Instagram, a fifteen-second vertical reel for TikTok, and a cover card for Facebook groups and LinkedIn.
When you attach a book from your library, the generator receives the real title, description, genre and chapter content, and the posts reference what is genuinely in the book. Without a book attached it works from the description you type.
They are drafts written to be publishable, but read each one before it goes out. Add the detail only you know, check the buy link, and make sure the voice matches how you normally write.
Runs with a book attached are saved to that book, together with every graphic you generate, so you can come back later and copy a post or download an image again instead of regenerating it. Runs without a book are not stored.
On Instagram a focused set of five to fifteen relevant tags works better than the maximum. On X and LinkedIn one or two are plenty, and on TikTok the spoken hook matters far more than the tags.
Related tools & guides
Keep going with more free tools and in-depth guides
Social Posts & Graphics
How the graphics that go with these posts work.
Press Kit Generator
Build the media kit journalists ask for.
Launch Email Sequence
Write the emails that run alongside your posts.
Book Blurb Generator
Write the description your posts link to.
Book Marketing for Self-Published Authors
Where social posts fit in a full launch plan.
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