AI Writing That Sounds Like You
Fill your caption, title, tags and alt text with AI, right where you schedule the post. It writes like your recent posts and keeps every platform's limit.
Most AI caption tools give you text that sounds like everyone else's: generic hooks, the same emoji, hashtags you would never use. ShortSync's AI writing starts from your account instead. It reads a few of your recently published posts and writes new ones the same way, with your tone, length, emoji and hashtag habits and your usual sign-off. The first time you use it, it also drafts a short style note from your posts that you can edit, so you can steer it in plain words. Every text field in the composer has an AI button: the caption, titles and descriptions, YouTube and Tumblr tags, first comments, Instagram and Pinterest alt text and more. Or press one button to fill every empty field at once, with the caption first and the rest built on it. AI looks at your image or a frame of your video, so it has something to go on even before you have typed a word.
Why this matters
Your Voice, Not a Template
AI writing reads your recent posts and matches how they sound, without copying their facts into the new one. The style note it drafts is yours to edit: write "friendly, two short lines, one emoji at most" and every field follows it, for everyone in the workspace.
Every Field in One Go
Uploading a video for YouTube, Instagram and Pinterest means a caption, a title, a description, tags and alt text. One button fills every empty field on the step. Fields you already wrote stay as they are, and Undo all puts things back if you would rather start over.
Fits Each Platform
Suggestions stay within the character limit of every platform the field goes to, so a caption written for X and Instagram fits X. Hashtags show up where they help and not on platforms that don't use them, like Reddit and Google Business Profile.
You Stay in Control
AI writes into the field for you to read and edit. Nothing is ever published by AI on its own. Improve, Shorten and Rewrite work on text you wrote yourself, and Undo puts back what was there.
How it works
- 1
Add your video, image, carousel or text post and choose your platforms, as usual.
- 2
On the caption step, click AI under any field, or the AI button at the top to fill every empty field. Optionally say what the post is about or how it should sound.
- 3
AI writes into the fields in your style, within each platform's limits. Edit anything you like, or use Try again or Undo.
- 4
Schedule or publish. Open Edit your style at any time to change how AI writes for your workspace.
Platform support
AI writing works for every platform ShortSync posts to: TikTok, YouTube, Instagram, Facebook, LinkedIn, X, Threads, Bluesky, Pinterest, Reddit, Snapchat, Telegram, Mastodon, Discord, Tumblr, Pixelfed and Google Business Profile. A shared caption fits the strictest platform it goes to; give a platform its own caption when you want more room on one of them. Alt text is written from the image itself, and each carousel image gets its own.
Conclusion
Writing is often the slowest part of posting, especially when one upload needs a caption, a title, tags and alt text for several platforms. ShortSync's AI writing does the first draft of all of it in your own voice, inside the tool where you schedule, so you spend your time checking and polishing instead of starting from a blank box. It is included on the Creator plan with 500 uses a month and on Team with 2,500, shared across your organization.
Frequently asked questions
Related guides
Ready to save hours every week?
Start publishing to every platform in one click.
Official APIs and approved publishing partners
Prefer a walkthrough? Book a demo with Hilma