Cut it once.
Post it everywhere.
Drop a vertical video and a one-line topic. OneCut writes captions tailored to each platform's voice and character limit, then publishes to TikTok, Instagram, Facebook and Threads at the same time — over secure OAuth, so it never sees your passwords.
Missing a day costs you reach — on every platform.
5-day free trial · no card required
One drop, not five uploads
A single video file and a short topic summary is the whole input. No re-formatting or re-uploading per platform.
Captions tailored per platform
Hook-first for TikTok, hashtags for Instagram, a discussion prompt for Facebook — generated automatically, and yours to edit before anything posts.
Secure by design
Every connection is real OAuth against each platform's own login. OneCut never asks for, sees, or stores a password.
How it works
Connect
Sign in with OAuth to the platforms you post to. Takes under a minute per platform.
Create
Drop your vertical video and a one-line topic.
Review
Captions are generated per platform — tweak anything before it goes out.
Publish
One click sends it to every connected platform, in parallel.